Colloids and Surfaces A: Physicochemical and Engineering Aspects最新文献_第7页

Phase transition, electrical and dielectric properties of novel ultra-low sintering temperature NaAlMo2O8 ceramic for application in patch antenna

IF 4.9 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-02-03 DOI: 10.1016/j.colsurfa.2025.136325

Xiangyu Xu , Yiyun Zhang , Jialun Du , Haitao Wu , Jie Zhang , Yunzhou Shi

{"title":"Phase transition, electrical and dielectric properties of novel ultra-low sintering temperature NaAlMo2O8 ceramic for application in patch antenna","authors":"Xiangyu Xu , Yiyun Zhang , Jialun Du , Haitao Wu , Jie Zhang , Yunzhou Shi","doi":"10.1016/j.colsurfa.2025.136325","DOIUrl":"10.1016/j.colsurfa.2025.136325","url":null,"abstract":"<div><div>This study synthesized a novel low-temperature sintered NaAlMo<sub>2</sub>O<sub>8</sub> (NAM) ceramic using the conventional solid-state method. XRD and Rietveld refinement analyses confirmed that the NAM ceramic exhibited a monoclinic structure (space group <em>C</em>2/<em>c</em> (No. 15)) in the temperature range of 620 °C to 660 °C. Density measurements and SEM revealed that the NAM ceramics possessed a dense microstructure with optimal grain distribution. The electrical characteristics of NAM ceramics were examined through complex impedance spectroscopy, while the potential migration pathways of Na<sup>+</sup> and O<sup>2−</sup> were investigated using the bond-valence method. The best performance was observed at a sintering temperature of 650 °C, with <em>ε</em><sub>r</sub><em>=</em> 7.81<em>, Q×f =</em> 38,213 GHz (at 10.56 GHz), <em>τ</em><sub><em>f</em></sub> <em>= −</em>45.43 ppm/°C. Furthermore, Raman spectroscopy and far-IR reflection spectroscopy were used to investigate the lattice vibrational modes of the NAM ceramic. Notably, far-IR reflection spectroscopy indicated that polarization in the NAM ceramic primarily arises from phonon absorption in the low-frequency region. According to P-V-L theory, it was found that in the NAM ceramic system, Al-O bonds predominantly influence <em>ε</em><sub>r</sub>, while Mo-O bonds significantly affect <em>Q×f</em> and <em>τ</em><sub><em>f</em></sub>. The formation energies of intrinsic point defects in NAM ceramic were computed using the GULP. Finally, a patch antenna for S-band applications was fabricated using this NAM ceramic, highlighting its potential for use in Sub-6 GHz frequency bands. Due to phase transformation characteristics at elevated temperatures, NAM ceramics may also serve as a promising electrolyte material for SOFCs.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"711 ","pages":"Article 136325"},"PeriodicalIF":4.9,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143388508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of mullite whiskers on the microstructure and mechanical properties of oil well cement

IF 4.9 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-02-03 DOI: 10.1016/j.colsurfa.2025.136332

Bixin Zhang , Youzhi Zheng , Jun Zhao , Yunchang Wang , Ming Li

{"title":"Effect of mullite whiskers on the microstructure and mechanical properties of oil well cement","authors":"Bixin Zhang , Youzhi Zheng , Jun Zhao , Yunchang Wang , Ming Li","doi":"10.1016/j.colsurfa.2025.136332","DOIUrl":"10.1016/j.colsurfa.2025.136332","url":null,"abstract":"<div><div>This study addresses the issues of excessive brittleness and susceptibility to cracking in cementite by creating mullite whiskers, which enhance its mechanical characteristics, by the molten salt process utilizing Na<sub>2</sub>SO<sub>4</sub>, metakaolin, and Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>·18 H<sub>2</sub>O as raw ingredients. Multiple analytical methodologies, such as thermogravimetric analysis (TG), X-ray diffraction analysis (XRD), scanning electron microscopy (SEM), and mercury intrusion porosimetry (MIP), were utilized to investigate the phase, microstructure, and pore attributes of the whisker-modified cement slurry, along with the mechanism through which mullite whiskers enhance the cement slurry. The test findings indicate that the needle-shaped mullite whiskers exhibit excellent dispersion and a consistent aspect ratio. They accelerate the cement hydration process without altering the types of hydration products produced. The addition of mullite whiskers markedly improves the initial compressive and tensile strength of the cement slurry. The incorporation of 0.7 % whiskers resulted in a rise in compressive and tensile strengths of the cement slurry by 55.26 % and 41.86 % at 3 days, and by 45.27 % and 43.52 % at 7 days, respectively. The percentage of detrimental pores in the cement slurry was diminished by 19 %, and the porosity was reduced by 8.11 %. Mullite whiskers can act as nucleation sites for cement hydration, expediting the development of hydration products. Furthermore, it can fill the micropores inside the cement matrix and enhance the microstructure. The bridging effect and pull-out energy dissipation mechanism of the whiskers augment the strength and hardness of the cement slurry, thus reducing its propensity to break.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"711 ","pages":"Article 136332"},"PeriodicalIF":4.9,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rapid synthesis of CuTA/Cur@ZIF-8 multifunctional drug delivery system towards cancer treatment

IF 4.9 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-02-03 DOI: 10.1016/j.colsurfa.2025.136321

Luan Minh Nguyen , Giao Thuy-Quynh Vu , Thi-Kim-Chi Huynh , Qui Thanh Hoai Ta , Ngoc Hoi Nguyen , Dieu Linh Tran , Dai Hai Nguyen

{"title":"Rapid synthesis of CuTA/Cur@ZIF-8 multifunctional drug delivery system towards cancer treatment","authors":"Luan Minh Nguyen , Giao Thuy-Quynh Vu , Thi-Kim-Chi Huynh , Qui Thanh Hoai Ta , Ngoc Hoi Nguyen , Dieu Linh Tran , Dai Hai Nguyen","doi":"10.1016/j.colsurfa.2025.136321","DOIUrl":"10.1016/j.colsurfa.2025.136321","url":null,"abstract":"<div><div>The multifaceted progression of cancer requires the implementation of nano-drug delivery systems (DDS) with enhanced functionalities to strengthen therapeutic effectiveness. Accordingly, we designed CuTA/Cur@ZIF-8 hybrid nanoparticles to enable localized drug release at the tumor site and effectively scavenge excessive free radicals in this region. To achieve these objectives, the pH-sensitive structure of zeolitic imidazolate framework-8 (ZIF-8) was employed as the drug carrier. Meanwhile, the copper-tannic acid (CuTA) complex was used as a surface coating for the hybrid nanoparticles, serving as a free radical scavenger and a biocompatibility enhancer. Hydrophobic curcumin (Cur) was also selected as a model anticancer drug for this multifunctional DDS. Notably, the synthesis of CuTA/Cur@ZIF-8 was completed within approximately 20 min under mild conditions (room temperature, magnetic stirring, and atmospheric pressure). Analytical results demonstrated that CuTA/Cur@ZIF-8 exhibited an exceptionally high Cur encapsulation efficiency of approximately 95.61 % while inheriting the advantageous properties of its components. The pH-responsive Cur release behavior of CuTA/Cur@ZIF-8 was also investigated, revealing that approximately 63.17 % of Cur was released at pH 5.5, which was 6.22 times higher than that at pH 7.4. Furthermore, a concentration of CuTA/Cur@ZIF-8 at 50 μg/mL was shown to be optimal for activating its biological functionalities, including free radical scavenging, cancer cell eradication, and non-toxicity to normal cells.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"711 ","pages":"Article 136321"},"PeriodicalIF":4.9,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrosion inhibition and adsorption behaviour of benzothiazole compounds on mild steel in an acidic environment: Experimental and theoretical approach

IF 4.9 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-02-03 DOI: 10.1016/j.colsurfa.2025.136318

Kumari Keshar , Ranjeet Kumar Mitra , Sujata Kumari Gupta , Pooja Kumari , Irfan Ahmad , I.B. Obot , Aeshah H. Alamri , Mahendra Yadav

{"title":"Corrosion inhibition and adsorption behaviour of benzothiazole compounds on mild steel in an acidic environment: Experimental and theoretical approach","authors":"Kumari Keshar , Ranjeet Kumar Mitra , Sujata Kumari Gupta , Pooja Kumari , Irfan Ahmad , I.B. Obot , Aeshah H. Alamri , Mahendra Yadav","doi":"10.1016/j.colsurfa.2025.136318","DOIUrl":"10.1016/j.colsurfa.2025.136318","url":null,"abstract":"<div><div>To achieve molecular tailoring for strong metal protection, it is essential to have a thorough understanding of the corrosion inhibitor behaviours at the metal–solution interface that are controlled by distinct molecular characteristics. This study examined the corrosion inhibition capability of benzothiazoles derivatives namely-2-((5-amino-1,3,4-thiadiazol-2-yl)thio)-N-(benzothiazol-2-yl)acetamide (ATBA) and 2-((5-acetamido-1,3,4-thiadiazol-2-yl)thio)-N-(benzothiazol-2-yl)acetamide (AATBA) on mild steel alloy exposed in 15 % hydrochloric acid solution. The inhibition performance between the synthesised compounds and the metal surface was investigated by gravimetric as well as electrochemical analysis in 15 % HCl solution. Both inhibitors ATBA and AATBA stand out as excellent corrosion inhibitors with an efficiency of 98.11 % and 97.34 %, respectively, at 200 ppm. Density functional theory (DFT) was used to investigate the electronic properties of the inhibitor molecules. The corrosion inhibitory trend was confirmed by changes in the interaction energy as determined by Monte Carlo simulation. The computation of the Fukui index makes it possible to see how the substituent group affects the relative electron donation and acceptance characteristics of the atoms located at the various locations inside the inhibitor molecule. The adherence of the inhibitors layer and protection of MS surface was confirmed with FESEM, AFM and XPS techniques. The potentiodynamic polarization (PDP) results indicate that the examined compounds are a mixed kind of inhibitor and can control the inhibition mechanism by both anodic and cathodic charge transfer. The adsorption behaviour of the molecules on steel surface follows the Langmuir adsorption isotherm through mixed adsorption as part of the inhibitory process.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"711 ","pages":"Article 136318"},"PeriodicalIF":4.9,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cationic oligomer surfactant self-assembly modified halloysite nanotubes improves the spread and retention of chlorpyrifos on leaves

IF 4.9 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-02-03 DOI: 10.1016/j.colsurfa.2025.136329

Yan Qin , Zhujun Xiao , Jianning Wu , Lin Cui , Guihua Meng , Shengchao Yang , Zhiyong Liu , Xuhong Guo

{"title":"Cationic oligomer surfactant self-assembly modified halloysite nanotubes improves the spread and retention of chlorpyrifos on leaves","authors":"Yan Qin , Zhujun Xiao , Jianning Wu , Lin Cui , Guihua Meng , Shengchao Yang , Zhiyong Liu , Xuhong Guo","doi":"10.1016/j.colsurfa.2025.136329","DOIUrl":"10.1016/j.colsurfa.2025.136329","url":null,"abstract":"<div><div>At present, it is very important to develop a nanoparticle drug delivery system that can spread and retain the leaf surface of plants at the same time, which can improve the loss of pesticide carriers on the leaf surface and improve the bioavailability of pesticides. The photosensitive pesticide chlorpyrifos was loaded with halloysite nanotubes. The coating of polydopamine (PDA) provided the interface adhesion ability for the pesticide carrier, and the assembly of cationic oligomeric surfactant provided the wetting and spreading ability for the pesticide carrier. The wettability and spreadability of pesticide carrier can be adjusted by changing the length of hydrophobic chain segment, and the contact angle of cotton leaf surface can reach 36.87°. The retention rate after simulated rain erosion can reach 83.65 %. The maximum release rate was 60.76 % after 60 hours of cumulative release, which showed sustained release performance. After 24 h of simulated solar illumination, the degradation rate of chlorpyrifos (CPF) was 62.76 %. Improving the adhesion and wetting spreading ability of inorganic nanopesticide carriers on leaf surface and reducing the loss and degradation of CPF of photosensitive pesticides play a positive role in improving the bioavailability of pesticides, so it has a wide range of significance in agricultural applications and environmental protection.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"711 ","pages":"Article 136329"},"PeriodicalIF":4.9,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143219526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surface functionalization of MXene with gallic acid for enhanced UV aging resistance in SBS-modified asphalt: A study of interface interaction and molecular dynamics

IF 4.9 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-02-02 DOI: 10.1016/j.colsurfa.2025.136316

Denghui Ren , Wei Xiong , Shencheng Fan , Yating Luo , Xin Jin , Fang Lai , Zhenxia Zhao , Ruinan Pei , Jing Li

{"title":"Surface functionalization of MXene with gallic acid for enhanced UV aging resistance in SBS-modified asphalt: A study of interface interaction and molecular dynamics","authors":"Denghui Ren , Wei Xiong , Shencheng Fan , Yating Luo , Xin Jin , Fang Lai , Zhenxia Zhao , Ruinan Pei , Jing Li","doi":"10.1016/j.colsurfa.2025.136316","DOIUrl":"10.1016/j.colsurfa.2025.136316","url":null,"abstract":"<div><div>Graphene-like materials are poised to transform asphalt modification due to their superior mechanical and structural attributes. This study introduces a gallic acid-grafted MXene composite, designed via interface modulation, to enhance the UV aging resistance of styrene-butadiene-styrene (SBS) modified asphalt. The modifier exhibited a dense, wrinkled structure, increasing its specific surface area by 140 %. Molecular dynamics simulations revealed that (3-aminopropyl) triethoxysilane reduced the interaction energy between the modifier and asphalt by 6 %, while the diffusion coefficient decreased by approximately 17 %. The composite’s strong UV absorption and antioxidant capabilities significantly mitigated the UV-induced degradation of SBS modified asphalt. Aging indices, including the carbonyl index and aliphatic index, exhibited maximum percentage changes of 31.39 % and 1.3 %, respectively. Rheological assessments indicated improved elastic recovery and a reduction in stress sensitivity under high-temperature and UV-aging conditions. These findings demonstrate the potential of the proposed modifier to enhance both the durability and functional performance of SBS modified asphalt, making it a viable solution for sustainable, high-grade road construction in UV-intense regions.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"711 ","pages":"Article 136316"},"PeriodicalIF":4.9,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual-purpose facial cleanser based on the L3 phase

IF 4.9 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-02-02 DOI: 10.1016/j.colsurfa.2025.136324

Jing Zhou , Xiao Meng

{"title":"Dual-purpose facial cleanser based on the L3 phase","authors":"Jing Zhou , Xiao Meng","doi":"10.1016/j.colsurfa.2025.136324","DOIUrl":"10.1016/j.colsurfa.2025.136324","url":null,"abstract":"<div><div>In order to fabricate a mild cleanser that performs the dual function of cleaning the facial skin and removing the make-up in a single step, phase diagram of sucrose laurate (SL)/propylene glycol monolaurate (PGML)/water systems is determined at 25℃. In the present work, we perform detailed investigations on the development of the micelles and the L<sub>3</sub> phase employing cryo-SEM microscopy and SAXS technique. A transition from the ellipsoidal micelles to the “pseudo-oblate” micelles, induced by the incorporation of PGML, is observed within the micellar region. As the SL/PGML mass ratio <span><math><msub><mrow><mi>ψ</mi></mrow><mrow><mi>SL</mi><mo>/</mo><mi>P</mi></mrow></msub></math></span> continues to decrease, a bilayer continuous phase (namely L<sub>3</sub> phase) occurs. Especially, a well-developed L<sub>3</sub> phase is found to exist predominantly in the systems with surfactant concentration (<span><math><msub><mrow><mi>W</mi></mrow><mrow><mi>S</mi></mrow></msub></math></span>) in the range of 0.05–0.15 as well as <span><math><msub><mrow><mi>ψ</mi></mrow><mrow><mi>SL</mi><mo>/</mo><mi>P</mi></mrow></msub></math></span> around 65/35. A strong shear-thinning behavior is observed for these L<sub>3</sub> phases during the steady shear tests. Subsequent dynamic frequency sweeps indicate that the elastic modulus of L<sub>3</sub> phase prevails over the viscous one over a large range of frequency, revealing the predominant presence of the sponge-like web. And its remarkable thermal stability is confirmed by the oscillatory amplitude test performed at 55 ℃. These L<sub>3</sub> phases exhibit weak gel-like behavior and demonstrate excellent cleansing efficacy in the removal of both hydrophilic and oily impurities, which make them great for use as a dual-purpose facial cleaner.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"711 ","pages":"Article 136324"},"PeriodicalIF":4.9,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143285382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of anisotropic superhydrophobic titanium alloy surface and analysis of droplet icing performance

IF 4.9 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-02-02 DOI: 10.1016/j.colsurfa.2025.136326

Yu-Ke Wang, Jie Li, Yun-Jie Guo, Shuo Fu, Yan-Ning Lu

{"title":"Preparation of anisotropic superhydrophobic titanium alloy surface and analysis of droplet icing performance","authors":"Yu-Ke Wang, Jie Li, Yun-Jie Guo, Shuo Fu, Yan-Ning Lu","doi":"10.1016/j.colsurfa.2025.136326","DOIUrl":"10.1016/j.colsurfa.2025.136326","url":null,"abstract":"<div><div>Inspired by various surfaces in nature, superhydrophobic surfaces have attracted significant research interest as functionalized surfaces over the past decades. In this work, titanium alloy (Ti-6Al-4V) surfaces with superhydrophobicity were prepared through rapid controlled laser ablation and chemical modification. Achieving water contact angles (WCAs) of approximately 159°, and the sliding angles (SAs) of surfaces with varying structures exhibited anisotropy. Additionally, droplet freezing experiments were performed on the superhydrophobic surfaces, demonstrating their effectiveness in delaying icing. The droplet freezing time was extended approximately twofold compared to smooth substrate surfaces. The rebound behavior of droplets impacting superhydrophobic and hydrophobic surfaces at varying Weber numbers (<em>We</em>) was investigated, revealing that superhydrophobic surfaces significantly reduce the contact time between droplets and the surfaces. This convenient preparation method is anticipated to enhance the properties of titanium alloy surfaces, thereby broadening their potential applications. This study provides valuable insights into potential applications across construction, transportation, and microdevices.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"711 ","pages":"Article 136326"},"PeriodicalIF":4.9,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143219157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ZnCl2-activated blood-derived carbons as co-catalysts for Fenton-like reaction and insight into their adsorption promoted Rhodamine B degradation

IF 4.9 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-02-02 DOI: 10.1016/j.colsurfa.2025.136317

Qingnan Meng , Shenghao Yuan , Dongmei Li , Wei Zhu , Dan Hao , Qingmin Kou , Yufei Tang , Kang Zhao

{"title":"ZnCl2-activated blood-derived carbons as co-catalysts for Fenton-like reaction and insight into their adsorption promoted Rhodamine B degradation","authors":"Qingnan Meng , Shenghao Yuan , Dongmei Li , Wei Zhu , Dan Hao , Qingmin Kou , Yufei Tang , Kang Zhao","doi":"10.1016/j.colsurfa.2025.136317","DOIUrl":"10.1016/j.colsurfa.2025.136317","url":null,"abstract":"<div><div>Carbon-based co-catalysts are increasingly recognized as potent accelerators for the Fe<sup>3+</sup>/Fe<sup>2+</sup> cycling in Fenton and Fenton-like reactions, significantly enhancing their efficiencies in water treatment. This study presents the synthesis of N/O-enriched porous carbon materials featuring atomically dispersed Zn/Fe sites through the carbonization of duck-blood tofu, coupled with ZnCl<sub>2</sub> as activator. As more ZnCl<sub>2</sub> was involved, the nitrogen element within the product is enriched and the overall metal (Zn+Fe) loading also increases. However, this is accompanied by a reduction in iron content and specific surface area. Notably, the co-catalyst AC3-900, with the lowest surface area and moderate Fe<sup>2+</sup> regeneration capacity demonstrates the best performance in Rhodamine B (RhB) degradation, compared to the counterparts prepared with less ZnCl<sub>2</sub>. This unexpected finding is attributed to the superior adsorption capability of AC3-900, which shorten the migration distance of ⋅OH produced around the material’s surface. We propose that the Lewis acid-base interactions between the single-atom Zn/Fe sites and the -COOH/-COO<sup>-</sup> functional groups present in RhB are primarily responsible for the enhanced adsorption. So, the AC3-900 with the highest single-atom metal loading profits the most. This insight may offer a novel design paradigm for co-catalysts in Fenton and Fenton-like reactions.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"711 ","pages":"Article 136317"},"PeriodicalIF":4.9,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143219156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergistic effects of modulating electrical double layer structure and facilitating uniform deposition of Zn2 + by biocompatible polysaccharide additive for high-performance aqueous zinc ion batteries

IF 4.9 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-02-02 DOI: 10.1016/j.colsurfa.2025.136323

Zhihong Ren , Jinyang Zhang , Xilin Wang , Jianli Cheng , Bin Wang

{"title":"Synergistic effects of modulating electrical double layer structure and facilitating uniform deposition of Zn2 + by biocompatible polysaccharide additive for high-performance aqueous zinc ion batteries","authors":"Zhihong Ren , Jinyang Zhang , Xilin Wang , Jianli Cheng , Bin Wang","doi":"10.1016/j.colsurfa.2025.136323","DOIUrl":"10.1016/j.colsurfa.2025.136323","url":null,"abstract":"<div><div>Dendrite growth and uncontrollable side reactions considerably restrict the development of aqueous zinc-ion batteries (AZIBs). In this study, chitosan (CTS), an inexpensive, biocompatible, and biodegradable polysaccharide biopolymer, is introduced to enhance the electrochemical properties of AZIBs through manipulation of electrical double layer adsorption and improvement of Zn deposition behavior. Theoretical calculations and experimental analyses show that CTS with a rich hydroxyl structure regulates the adsorption of the electrical double layer and the hydrogen-bonding network among water molecules, thereby influencing preferential binding and deposition behavior of Zn<sup>2+</sup>. Owing to synergistic effects of redistributed solvated layer surrounding Zn<sup>2+</sup> and inhibited excessive growth of Zn dendrites, the electrochemical performance is significantly enhanced. The Zn||Zn symmetric battery with CTS additives demonstrates stable cycling performance for 1650 h (825 cycles) at 0.5 mA cm<sup>−2</sup> and 0.5 mAh cm<sup>−2</sup>, which is eight times longer than that of the battery without additives. So, the assembled Zn||MnO<sub>2</sub> full cells exhibit remarkable cycling stability, high specific capacity and superb rate capability. This work may shed light for the development of high-performance AZIBs.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"711 ","pages":"Article 136323"},"PeriodicalIF":4.9,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0