Colloids and Surfaces A: Physicochemical and Engineering Aspects最新文献_第10页

Effect of composition of Janus nanosheets on their emulsion stabilization and catalytic reduction properties Janus纳米片的组成对其乳液稳定性和催化还原性能的影响

IF 5.4 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-09-30 DOI: 10.1016/j.colsurfa.2025.138511

Yanping Duan , Xia Zhao , Huiqi Guo , Jianfang Li , Duo Zhang , Zhifeng Sun , Chen Chen

{"title":"Effect of composition of Janus nanosheets on their emulsion stabilization and catalytic reduction properties","authors":"Yanping Duan , Xia Zhao , Huiqi Guo , Jianfang Li , Duo Zhang , Zhifeng Sun , Chen Chen","doi":"10.1016/j.colsurfa.2025.138511","DOIUrl":"10.1016/j.colsurfa.2025.138511","url":null,"abstract":"<div><div>Janus nanosheets with asymmetrical structure and composition exhibit superior performance in emulsion stabilization and interfacial catalysis compared to homogeneous nanoparticles. In this paper, Janus silica nanosheets containing a phenyl group (JSNP) and Janus silica nanosheets containing an octyl group with hydrophobic functionality (JSNO) were prepared, respectively. Janus catalysts loaded with Ag nanoparticles were prepared using the impregnation reduction method for the catalytic reduction of 4-nitrophenol (4-NP) and methylene blue (MB). The effects of the composition and surface properties of Janus nanosheets on their emulsion stability and catalytic reduction performance for 4-NP were systematically analyzed. The results showed that the hydrophilic/hydrophobic ratio of the nanosheets and the type of hydrophobic functional groups play a key role in the emulsification of the Janus nanosheets and the catalytic efficiency of 4-NP. Among them, the hydrophilic/hydrophobic ratio (1:1) JSNP-Ag showed stronger emulsion stability and 4-NP catalytic performance. Based on the asymmetric structure of JSNP and good dispersion of Ag nanoparticles, the JSNP-Ag catalysts exhibited broad-spectrum catalytic reduction performance in oil-water inhomogeneous phase systems for methylene blue solutions with concentrations ranging from 16.7 to 167 mg/L. In addition, cycling experiments showed that JSNP-Ag exhibited good stability against 4-NP over 5 cycles and methylene blue over 8 cycles. The fundamental insights into the structure-performance relationship of Janus-type catalysts in this work are instructive for developing efficient and sustainable catalytic systems.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138511"},"PeriodicalIF":5.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218596","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

The development of double-barrier anticorrosion coating by embedding CNTs/MXene@ZnFe-MoO4 LDH in the waterborne epoxy resin 在水性环氧树脂中包埋CNTs/MXene@ZnFe-MoO4 LDH制备双屏障防腐涂料

IF 5.4 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-09-30 DOI: 10.1016/j.colsurfa.2025.138521

Lanhe Zhang , Wei Du , Hui Liu , Mingshuang Zhang , Fangfei Shi , Jingbo Guo , Haiyan Zhang

{"title":"The development of double-barrier anticorrosion coating by embedding CNTs/MXene@ZnFe-MoO4 LDH in the waterborne epoxy resin","authors":"Lanhe Zhang , Wei Du , Hui Liu , Mingshuang Zhang , Fangfei Shi , Jingbo Guo , Haiyan Zhang","doi":"10.1016/j.colsurfa.2025.138521","DOIUrl":"10.1016/j.colsurfa.2025.138521","url":null,"abstract":"<div><div>The anticorrosion of coatings could be effectively enhanced using two-dimensional Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene. Nevertheless, its natural accumulation tendency in the waterborne epoxy (WEP) resin resulted in the formation of pores and fractures of coatings, and could not completely prevent the invasion of corrosive media. To address the issue, a novel heterostructure network CNTs/MXene@ZnFe-MoO<sub>4</sub> LDH (CML) nanofiller was successfully synthesized using electrostatic adsorption and in-situ growth methods, which was then introduced into WEP to prepare CML/WEP composite coating. The effect of CML filler on the interfacial compatibility and barrier properties of the coating was explored, and the corrosion resistance and antiwear mechanisms of the coating were analyzed. The results showed that after 0.5 h of friction, the wear rate (W<em>r</em>) of the CML/WEP coating was reduced by 85.46 % compared to that of the WEP coating. The |Z|<sub>0.01 Hz</sub> value of the CML/WEP coating remained at a high level (5.84 ×10<sup>7</sup> Ω·cm²) after 28 d of immersion. According to density functional theory (DFT) calculations, the free energies of FeMoO<sub>4</sub>, Fe<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub>, and Zn(OH)<sub>2</sub> on the metal substrate were −2.13 eV, −1.86 eV, and −1.57 eV, respectively, confirming successful release of corrosion inhibitors in the coating and the formation of a stable protective film. The CML filler exhibited remarkable dispersibility, barrier properties, and release capability of corrosion inhibitor. The micro-network structure of CML endowed WEP coatings with superior corrosion resistance and wear resistance. This study provided significant insights into the development of high-performance coating materials for industrial equipment protection.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138521"},"PeriodicalIF":5.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218646","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

Hydrothermal synthesis of peanut shell-derived carbon dots as the novel efficient inhibitor for the corrosion of steel 水热合成花生壳碳点作为新型高效缓蚀剂的研究

IF 5.4 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-09-30 DOI: 10.1016/j.colsurfa.2025.138517

Yanqiong Guan , Xianghong Li , Bochuan Tan , Simei Yang , Shuduan Deng

{"title":"Hydrothermal synthesis of peanut shell-derived carbon dots as the novel efficient inhibitor for the corrosion of steel","authors":"Yanqiong Guan , Xianghong Li , Bochuan Tan , Simei Yang , Shuduan Deng","doi":"10.1016/j.colsurfa.2025.138517","DOIUrl":"10.1016/j.colsurfa.2025.138517","url":null,"abstract":"<div><div>In this study, a facile and environmentally friendly method was reported for the preparation of carbon dots derived from peanut shells (PS-CDs), a common agricultural waste materials. The synthesized PS-CDs exhibited remarkable effectiveness in inhibiting the corrosion of cold-rolled steel (CRS) in 1.0 M HCl solution. The structural features of PS-CDs were fully confirmed by a combination of characterization techniques, including transmission electron microscopy (TEM), X-ray diffraction (XRD), photoluminescence spectroscopy (PL), ultraviolet-visible absorption spectroscopy (UV–vis) and Fourier-transform infrared spectroscopy (FT-IR). Weight loss measurements revealed that, at 30 °C, the addition of 50 mg L<sup>−1</sup> PS-CDs resulted in an inhibition efficiency as high as 92.37 %. The adsorption behavior of PS-CDs on the CRS surface was found to follow the Langmuir monolayer adsorption isotherm. Electrochemical measurements further demonstrated that PS-CDs acted as a mixed-type inhibitor, effectively suppressing both the cathodic hydrogen evolution reaction and the anodic metal dissolution process. Surface analyses indicated that PS-CDs could strongly adsorb onto the CRS surface to form a protective film, thereby significantly mitigating the acid-induced corrosion. The excellent inhibition performance of PS-CDs, combined with their eco-friendly and simple synthesis route, highlights their great potential as a novel green corrosion inhibitor for industrial applications. This also offers a novel promising pathway for the high-value utilization of peanut shell resources.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138517"},"PeriodicalIF":5.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218603","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

Celosia cristata L.-like N, O co-doped hierarchical porous carbon materials for high performance supercapacitor 用于高性能超级电容器的类晶态氮氧共掺杂层次化多孔碳材料

IF 5.4 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-09-30 DOI: 10.1016/j.colsurfa.2025.138513

Jian Song , Tao Wang , Yulong Yang , Shuijian He , Boan Wu , Chunmei Zhang , Zhenlu Liu , Min Ru , Haoqi Yang , Qian Zhang

{"title":"Celosia cristata L.-like N, O co-doped hierarchical porous carbon materials for high performance supercapacitor","authors":"Jian Song , Tao Wang , Yulong Yang , Shuijian He , Boan Wu , Chunmei Zhang , Zhenlu Liu , Min Ru , Haoqi Yang , Qian Zhang","doi":"10.1016/j.colsurfa.2025.138513","DOIUrl":"10.1016/j.colsurfa.2025.138513","url":null,"abstract":"<div><div>Supercapacitors exhibit important application value in new energy vehicles, smart grids, and wearable devices due to their high-power density, long cycle life, and wide temperature adaptability. However, the core bottleneck lies in traditional carbon-based electrode materials suffering from inefficient pore structures, surface chemical inertness, and unsustainable preparation processes. Here, we successfully constructed <em>Celosia cristata</em> L.-like N, O co-doped porous carbon electrode materials by simple high-temperature pyrolysis, using histidine as both the carbon precursor and self-doping source, and combining with the structure directing agent (zinc acetate) to modulate homogeneous dispersion of Zn<sup>2+</sup> through coordination chemistry. The optimized carbonaceous products exhibited mesoporous network structure (specific surface area of 1145 m<sup>2</sup> g<sup>−1</sup>), with a high specific capacitance of 241 F g<sup>−1</sup> at a current density of 0.1 A g<sup>−1</sup>. The assembled symmetric supercapacitor demonstrates excellent electrochemical performance, maintaining 80 F g<sup>−1</sup> at a high current density of 20 A g<sup>−1</sup> and a capacity retention of 96.7 % after 40,000 cycles at 5 A g<sup>−1</sup>. This strategy enables molecular-scale anchoring coordination of metal ions through precise design of biomass molecules, effectively solving the problem of pore structure damage caused by metal aggregation in traditional templating methods. It provides a universal solution for developing high-performance, low-cost, and eco-friendly supercapacitor electrode materials.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138513"},"PeriodicalIF":5.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145263884","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

Hollow glass beads/polyurethane multifunctional foamed membranes based on structure-function co-design and their extreme environmental applications. 基于结构功能协同设计的中空玻璃微珠/聚氨酯多功能泡沫膜及其极端环境应用。

IF 5.4 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-09-30 DOI: 10.1016/j.colsurfa.2025.138512

Yuanjun Liu , Hang Ye

{"title":"Hollow glass beads/polyurethane multifunctional foamed membranes based on structure-function co-design and their extreme environmental applications.","authors":"Yuanjun Liu , Hang Ye","doi":"10.1016/j.colsurfa.2025.138512","DOIUrl":"10.1016/j.colsurfa.2025.138512","url":null,"abstract":"<div><div>Outdoor adventures in extreme environments place stringent requirements on the multifunctional integration of materials, and the existing research has made it difficult to synergize the UV resistance, infrared stealth, and thermal insulation properties due to the limitations of structural design, let alone expanding the additional functions. In this study, based on the concept of “structure-function synergistic design”, the HGB/polyurethane foamed film was prepared by the scraping method through the synergistic effect of the sodium dodecyl sulfate (NXZ) and hollow glass beads (HGB), which realizes the synergistic enhancement of multi-functionality and expansion of functions for the first time. Experiments show that NXZ (0.2 wt%) and HGB (24 wt%) synergistically enhance the UPF of the film by 12 times compared with that of the NXZ-free film through the “scattering-barrier” synergistic effect, reduce the infrared emissivity by 10.19 %, and the thermal conductivity is as low as 0.03995 W/(m∙K), and at the same time, realize the acoustic absorption factor of 0.227 (2450 Hz). With the introduction of iron oxide yellow 313 dye, the UPF was further increased by 11.77 times, the IR emissivity was reduced by 20.96 %, and the self-cleaning function was given through the interfacial synergistic effect. The synergistic mechanism of “porous structure-functional unit” established in this study provides a new paradigm for the design of materials for extreme environments, which has significant potential for application.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138512"},"PeriodicalIF":5.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218525","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

Sustainable UV-shielding sodium alginate films via direct nanostructure replication from cicada wings 通过直接复制蝉翅的纳米结构实现可持续的紫外线屏蔽海藻酸钠膜

IF 5.4 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-09-30 DOI: 10.1016/j.colsurfa.2025.138501

Linmei Zhang , Haruhiro Ino , Shinjiro Machida , Kunkun Fu , Kazushi Yamada

{"title":"Sustainable UV-shielding sodium alginate films via direct nanostructure replication from cicada wings","authors":"Linmei Zhang , Haruhiro Ino , Shinjiro Machida , Kunkun Fu , Kazushi Yamada","doi":"10.1016/j.colsurfa.2025.138501","DOIUrl":"10.1016/j.colsurfa.2025.138501","url":null,"abstract":"<div><div>The development of environmentally friendly, biodegradable films with functional performance is essential for reducing dependence on petroleum-based polymers and mitigating environmental pollution. In this study, we present a sustainable and straightforward method for producing UV shielding sodium alginate films by directly transferring natural nanostructures from cicada wings onto the film surface through a simple casting process. The nanostructured films were characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), and ultraviolet visible (UV-Vis) transmission spectroscopy. Replication of the wing nanostructures produced a significant reduction in UV transmittance, attributed to enhanced Rayleigh and Mie scattering. Ionic crosslinking with calcium chloride further altered the surface morphology, increased thermal stability, and modified wettability. Notably, these effects were achieved without the use of petroleum-based polymers, chemical additives, or complex fabrication techniques. This approach demonstrates a viable pathway for developing sustainable, functional biopolymer films with potential applications in packaging, coatings, and biomedical products.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138501"},"PeriodicalIF":5.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218601","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

Robust PPy@PVA hydrogel for efficient ice prevention and all-day ice removal 坚固的PPy@PVA水凝胶，有效防止冰和全天除冰

IF 5.4 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-09-30 DOI: 10.1016/j.colsurfa.2025.138499

Xingyu Zhao , Qiran Yu , Yumin Wang , Linfan Li , Xiao Miao , Guina Ren , Xiaotao Zhu

{"title":"Robust PPy@PVA hydrogel for efficient ice prevention and all-day ice removal","authors":"Xingyu Zhao , Qiran Yu , Yumin Wang , Linfan Li , Xiao Miao , Guina Ren , Xiaotao Zhu","doi":"10.1016/j.colsurfa.2025.138499","DOIUrl":"10.1016/j.colsurfa.2025.138499","url":null,"abstract":"<div><div>The issue of ice accumulation has been demonstrated to markedly impact daily life and industrial facilities. The formidable challenges associated with ice prevention and removal necessitate the development of innovative and effective anti-icing and de-icing strategies. Herein, we have developed a polypyrrole coated polyvinyl alcohol (denoted as PPy@PVA) hydrogel with a water-dimethyl sulfoxide (water/DMSO) binary solvent infused into its network. The PPy@PVA hydrogel has robust mechanical properties, and stable slippery wettability, and it is also able to self-repair upon water/DMSO liquid overlayer depletion. The strong interaction between water and DMSO molecules results in a reduced freezing temperature of the hydrogel (up to as low as −60 °C), and it can also extend the water droplet freezing time significantly even in environments with high humidity and low temperature. The PPy@PVA hydrogel has been shown to exhibit both photothermal and electrothermal effects, thereby enabling the melting of accumulated ice layers on its surface through solar irradiation or by connecting it to a power source. Notably, when integrated with photothermal and electrothermal effects, the hydrogel exhibited a combination of all-day de-icing efficacy and accelerated ice melting time. This work presents a promising strategy for effective ice prevention and removal, with the potential for application in all-day and cold-weather de-icing.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138499"},"PeriodicalIF":5.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218645","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

Enhanced oil removal and eco-efficiency in recycled polyester yarn via flow-optimized waterless processing 通过流动优化的无水处理，提高了再生聚酯纱的除油和生态效率

IF 5.4 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-09-30 DOI: 10.1016/j.colsurfa.2025.138496

Jie Chen , Qin Fang , Laijiu Zheng , Huanda Zheng

{"title":"Enhanced oil removal and eco-efficiency in recycled polyester yarn via flow-optimized waterless processing","authors":"Jie Chen , Qin Fang , Laijiu Zheng , Huanda Zheng","doi":"10.1016/j.colsurfa.2025.138496","DOIUrl":"10.1016/j.colsurfa.2025.138496","url":null,"abstract":"<div><div>Supercritical CO<sub>2</sub> technology provides an effective means of mitigating environmental pollution caused by conventional water-based oil removal from synthetic fibers. However, the structural design of the bobbin hinders its efficiency. Herein, a bobbin was redesigned via computational fluid dynamics (CFD) simulation to enhance the oil removal efficiency of recycled polyester yarn. The redesigned bobbin (inner diameter 55 mm, pore diameters 5–8 mm) exhibited a more uniform fluid velocity and a reduction in total pressure loss by 715.07 Pa compared to the original design. Experimental validation confirmed that the oil removal rate was significantly increased from 58.54 % to 78.05 % in the inner layer, from 72.39 % to 75.46 % in the middle layer, and from 54.76 % to 69.64 % in the outer layer. The dyed samples after oil removal showed improved color depth (K/S value increased from 5.12 to 5.87) and uniformity. This design strategy achieves an energy savings of 22 kWh per ton of yarn while maintaining zero wastewater discharge, providing a theoretical foundation for the design of supercritical equipment.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138496"},"PeriodicalIF":5.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218647","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

Multifunctional PDMS/Fe₃O₄@MMT/SA@PDA-modified melamine sponge for oil/water separation and fire suppression 多功能PDMS/Fe₃O₄@MMT/SA@PDA-modified三聚氰胺海绵，用于油水分离和灭火

IF 5.4 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-09-30 DOI: 10.1016/j.colsurfa.2025.138515

Hong Ji , Shuyong Zhu , Ke Yang , Juncheng Jiang , Zhixiang Xing , Jinhua Sun

{"title":"Multifunctional PDMS/Fe₃O₄@MMT/SA@PDA-modified melamine sponge for oil/water separation and fire suppression","authors":"Hong Ji , Shuyong Zhu , Ke Yang , Juncheng Jiang , Zhixiang Xing , Jinhua Sun","doi":"10.1016/j.colsurfa.2025.138515","DOIUrl":"10.1016/j.colsurfa.2025.138515","url":null,"abstract":"<div><div>Conventional sorption materials exhibit disadvantages such as low sorption capacity, difficulty in treating heavy oil, and insufficient flame retardancy when addressing oil spills. In this study, a magnetic superhydrophobic photothermal flame-retardant material was synthesized via polymerization and immersion techniques, utilizing cost-effective and environmentally friendly melamine sponge (MS) as the substrate. The modified sponge exhibits a water contact angle of 153°, an sorption capacity ranging from 9.7 g/g to 19.0 g/g for various oils and organic solvents, and stable mechanical properties. It demonstrates excellent oil-water separation performance and reusability. Under light irradiation, its crude oil sorption rate increases by 6.6 times compared to conditions without light exposure. Thermogravimetric analysis (TGA) reveals that the initial decomposition temperature of the modified sponge is 54.7°C higher than that of the unmodified sponge, with a residual mass 2.2 times greater. Moreover, it can efficiently adsorb oil and suppress fire on the water surface under magnetic drive, concentrating the spilled oil within the sponge while leveraging the sponge's inherent flame-retardant property to quickly extinguish the fire.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138515"},"PeriodicalIF":5.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145263807","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

Mechanism insight into the Fe3O4/biochar/BiOBr S–scheme heterostructure with improved photocatalytic degradation performance for pharmaceutical wastewater Fe3O4/生物炭/BiOBr s -方案异质结构对制药废水光催化降解性能的机理研究

IF 5.4 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-09-30 DOI: 10.1016/j.colsurfa.2025.138518

Zihao Niu , Chao Chen , Zihan Yin , Xiaofei Zhang , Jing Sun , Huanxian Shi

{"title":"Mechanism insight into the Fe3O4/biochar/BiOBr S–scheme heterostructure with improved photocatalytic degradation performance for pharmaceutical wastewater","authors":"Zihao Niu , Chao Chen , Zihan Yin , Xiaofei Zhang , Jing Sun , Huanxian Shi","doi":"10.1016/j.colsurfa.2025.138518","DOIUrl":"10.1016/j.colsurfa.2025.138518","url":null,"abstract":"<div><div>Rapid recombination of photogenerated carriers is significant barrier to the photodegradation of organic contaminants in pharmaceutical wastewater. This study utilized BiOBr nanosheets as modifiers to improve the separation efficiency of photogenerated carriers and enhance the self–cleaning capability of magnetic biochar (Fe<sub>3</sub>O<sub>4</sub>/biochar). The photocatalytic performance of the novel system (Fe<sub>3</sub>O<sub>4</sub>/biochar/BiOBr) was evaluated by degrading tetracycline (TC) under visible light irradiation, achieving approximately 88.17 % degradation within 20 min. The intermediates and potential degradation pathways were thoroughly analyzed using liquid chromatography–mass spectrometry. The photocatalytic degradation mechanism and the enhancement of degradation activity were investigated using various techniques and DFT calculations. Electron spin resonance (ESR) measurements and trapping experiments identified ·OH, <sup>1</sup>O<sub>2</sub>, ·O<sub>2</sub><sup>−</sup>, and <em>h</em><sup>+</sup> as the primary reactive species involved. The photogenerated charge transfer across the FCB heterojunction interface followed the S–scheme mechanism, as confirmed by optoelectronic experiments and density functional theory (DFT) calculations. This research introduces a novel approach to utilizing biochar–supported photocatalysts for pharmaceutical wastewater treatment.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138518"},"PeriodicalIF":5.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218643","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