Colloids and Surfaces A: Physicochemical and Engineering Aspects最新文献_第3页

Mussel-inspired synthesis of covalent organic framework and MXene composite for high-performance adsorption of diclofenac sodium 贻贝启发合成共价有机骨架及MXene复合材料高效吸附双氯芬酸钠

IF 4.9 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-05-22 DOI: 10.1016/j.colsurfa.2025.137288

Zhouyang Cheng , Shoufeng Jiao , Zhengzheng Liao , Jian Zhou , Haijiao Xie , Jinfang Hu , Zhentao Li

{"title":"Mussel-inspired synthesis of covalent organic framework and MXene composite for high-performance adsorption of diclofenac sodium","authors":"Zhouyang Cheng , Shoufeng Jiao , Zhengzheng Liao , Jian Zhou , Haijiao Xie , Jinfang Hu , Zhentao Li","doi":"10.1016/j.colsurfa.2025.137288","DOIUrl":"10.1016/j.colsurfa.2025.137288","url":null,"abstract":"<div><div>The development of highly effective strategies for the removal of diclofenac sodium is essential to mitigating the threat to public health. This study introduces an adsorbent based on covalent organic framework functionalized MXene, fabricated via a mussel-inspired approach. Initially, MXene was coated with polydopamine through dopamine self-polymerization, introducing amino groups to its surface. Subsequently, the covalent organic framework was assembled onto the surface of MXene. The synthesized adsorbent was employed for the removal of diclofenac sodium, and various factors, including pH, ionic strength, and the presence of inorganic ions, influencing its adsorption performance were systematically examined. This heterostructure composite integrated the advantageous properties of both MXene and covalent organic framework, and exhibited excellent adsorption selective toward diclofenac sodium, with a high adsorption capacity of 495 mg/g for diclofenac sodium and a rate constant k<sub>2</sub> of 0.2134 g/mg/min, surpassing most previously reported adsorbents. Furthermore, the adsorbent retained an adsorption efficiency exceeding 90 % for DCF even after 20 consecutive reuse cycles. Through various characterization analysis, the primary driving forces for diclofenac sodium adsorption were identified as hydrophobic, π-π, anion-π, hydrogen bonding, and electrostatic interactions. Notably, this composite exhibited exceptional adsorption performance for diclofenac sodium in honey, milk, eggs, and lake water samples, highlighting its strong potential for practical applications.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"722 ","pages":"Article 137288"},"PeriodicalIF":4.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138203","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-network phase-separation engineered conductive hydrogel with environment-adaptive adhesion and swelling resistance for underwater ECG 双网络相分离导电水凝胶，具有环境自适应粘附和抗膨胀性能

IF 4.9 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-05-22 DOI: 10.1016/j.colsurfa.2025.137285

Yuefei Ding, Zixuan Lian, Hangyang Liu, Hengyi Cheng, Dan Yu, Wei Wang

{"title":"Dual-network phase-separation engineered conductive hydrogel with environment-adaptive adhesion and swelling resistance for underwater ECG","authors":"Yuefei Ding, Zixuan Lian, Hangyang Liu, Hengyi Cheng, Dan Yu, Wei Wang","doi":"10.1016/j.colsurfa.2025.137285","DOIUrl":"10.1016/j.colsurfa.2025.137285","url":null,"abstract":"<div><div>The application of electrocardiogram (ECG) monitoring in complex environments—such as underwater or under heavy perspiration—remains challenging due to interfacial instability and signal degradation in conventional electrodes. Developing flexible, environment-adaptive materials with cross-media compatibility is crucial for advancing wearable and subaquatic medical devices. Here, we report a novel strategy using aqueous PEDOT dispersion-induced phase separation to fabricate conductive hydrogels with robust underwater functionality. The resulting biphasic structure exhibits exceptional stretchability (up to 2500 % tensile strain), strong adhesion (40 kPa underwater), and intrinsic conductivity (16.7 S/m), without post-processing. These hydrogels maintain stable performance across air–water interfaces, enabling high-fidelity biopotential recording even in liquid environments. Demonstrated as ECG electrodes, they deliver clinical-grade signal quality underwater and resist interference from sweat during physical activity. This one-step fabrication method supports scalable, cost-effective production, facilitating integration into diving gear and marine protective suits. The material’s dual adaptability to both wet and dry conditions opens new pathways for reliable biosignal monitoring in extreme environments. These findings represent a significant step toward industrial deployment of hydrogel-based soft electronics in aquatic healthcare and sports physiology applications.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"722 ","pages":"Article 137285"},"PeriodicalIF":4.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138199","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-mode lanthanide-doped UCNPs biosensor enables ultrasensitive quantification of myocardial injury markers via NIR-responsive upconversion 双模镧掺杂UCNPs生物传感器通过nir响应上转换实现心肌损伤标志物的超灵敏定量

IF 4.9 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-05-22 DOI: 10.1016/j.colsurfa.2025.137283

Yuemei Li , Yongmei Li , Rui Wang

{"title":"Dual-mode lanthanide-doped UCNPs biosensor enables ultrasensitive quantification of myocardial injury markers via NIR-responsive upconversion","authors":"Yuemei Li , Yongmei Li , Rui Wang","doi":"10.1016/j.colsurfa.2025.137283","DOIUrl":"10.1016/j.colsurfa.2025.137283","url":null,"abstract":"<div><div>The heart disease poses a serious threat to human life and health. It is still a challenge to develop a sensing probe for detecting acute myocardial infarction. Herein, Yb<sup>3 +</sup>, Er<sup>3+</sup> and Al<sup>3+</sup> ions co-doped ZnO (Yb/Er/AZO) upconversion luminescent nanoparticles (UCNPs) are prepared via sol-gel method, which has a good test sensitivity of ANP and cTnI antigens. The multi-color turning of Yb/Er/ZnO was obtained. The UCL color of Yb/Er/ZnO change from red, white to green with different laser power. The pure red UCL of Yb/Er/AZO is observed with Al<sup>3+</sup> ions doping, which realizes ANP and cTnI antigens biomarkers. The specific detection limits for ANP and cTnI antigens in Yb/Er/AZO-LFS are lower than that of clinical critical values, which improve the detecting sensitivity. In addition, the maximum relatively temperature sensitivities (<em>S</em><sub><em>R</em></sub>) based on intensity ratio of 521/542 nm of Er<sup>3+</sup> ions achieve 1.53 % K<sup>−1</sup> for Yb/Er/AZO UCNPs, realizing dual-mode UCL probe and temperature sensing.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"722 ","pages":"Article 137283"},"PeriodicalIF":4.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138104","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

Non-covalent co-assembly of gallic acid and antimicrobial peptides for long-lasting antibacterial coatings via interfacial engineering 基于界面工程的没食子酸与抗菌肽非共价共组装用于长效抗菌涂层

IF 4.9 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-05-22 DOI: 10.1016/j.colsurfa.2025.137292

Jing Fu , Linjie Zhao , Chen Ma , Xinyue Hou , Zhongyuan Wu , Shutong Li , Xiaoming Zhang , Meiwen Cao

{"title":"Non-covalent co-assembly of gallic acid and antimicrobial peptides for long-lasting antibacterial coatings via interfacial engineering","authors":"Jing Fu , Linjie Zhao , Chen Ma , Xinyue Hou , Zhongyuan Wu , Shutong Li , Xiaoming Zhang , Meiwen Cao","doi":"10.1016/j.colsurfa.2025.137292","DOIUrl":"10.1016/j.colsurfa.2025.137292","url":null,"abstract":"<div><div>The widespread demand for eco-friendly, long-lasting antimicrobial materials in food packaging and medical settings remains unmet due to the limitations of conventional coatings, which often suffer from poor water resistance, environmental toxicity, and short-term efficacy. Herein, a facile interfacial engineering strategy is reported to construct long-lasting antibacterial films via non-covalent co-assembly of gallic acid (GA) and antimicrobial peptides (AMPs). Three AMPs (G3, C12, C16) with varied structural features and hydrophobic domains are chosen to synergize with GA through hydrogen bonding, electrostatic interactions, and hydrophobic effects, forming insoluble aggregates. These aggregates are uniformly coated onto polyethylene terephthalate (PET) surface, yielding a robust network structure with strong adhesion, which can serve as a reservoir to release AMPs gradually. The PET surface modified with GA/AMPs achieves > 90 % inhibition rates against <em>Escherichia coli</em> and <em>Staphylococcus aureus</em>, attributed to membrane disruption via released AMPs. Remarkably, the coatings retain 80 % antibacterial efficacy even after two days of rigorous water washing, demonstrating superior durability. Cytotoxicity assays reveal high cell viability for both HepG-2 and CHO cells, underscoring excellent biocompatibility. This work presents a scalable, energy-efficient approach to fabricate wash-resistant antimicrobial coatings, offering promising potential for next-generation food packaging and biomedical applications.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"722 ","pages":"Article 137292"},"PeriodicalIF":4.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123287","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-engineered Jahn-Teller/confinement synergy in asymmetric chlorinated Janus graphene for ultra-selective gold recovery from E-waste 双工程Jahn-Teller/约束协同作用在非对称氯化Janus石墨烯中用于从电子垃圾中超选择性回收金

IF 4.9 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-05-22 DOI: 10.1016/j.colsurfa.2025.137284

Gaoyuan Gu , Yan Zhou , Jianing Zhang , Wenhui Li , Chong Peng , Changlong Bi , Shuyi Yang , Tao E

{"title":"Dual-engineered Jahn-Teller/confinement synergy in asymmetric chlorinated Janus graphene for ultra-selective gold recovery from E-waste","authors":"Gaoyuan Gu , Yan Zhou , Jianing Zhang , Wenhui Li , Chong Peng , Changlong Bi , Shuyi Yang , Tao E","doi":"10.1016/j.colsurfa.2025.137284","DOIUrl":"10.1016/j.colsurfa.2025.137284","url":null,"abstract":"<div><div>The development of selective adsorbents with precise ion recognition capability remains crucial for sustainable gold recovery from electronic waste. We systematically studied the hydration process of gold, silver, and copper ions, confirming the unique stable planar hydration structure specific to gold ions. Based on the microscopic inverse design theory, we propose an asymmetric chlorination strategy to construct Janus bilayer graphene with a dual selection mechanism (confinement effect and high gold affinity). Among them, C<sub>12</sub>Cl<sub>5</sub> exhibits exceptional thermal stability, a high theoretical adsorption capacity (1225 mg g<sup>−1</sup>, surpassing recently reported adsorbents in gold adsorption performance), optimal application conditions at 40 °C and pH = 1, and excellent selectivity in mixed pollutant solutions. These advantages originate from the low diffusion barrier for water-soluble cations entering the interlayer and the high crystal field stabilization energy of weak-field ligands coordinating with gold. This dual-mechanism design paradigm establishes chlorinated graphene as a next-generation gold extraction platform, providing both theoretical foundations for hydration structure-adsorption correlations and practical guidelines for industrial wastewater treatment processes.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"722 ","pages":"Article 137284"},"PeriodicalIF":4.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144131286","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

Lizard skin-inspired superhydrophobic photothermal fabric with hierarchical structure for anti/de-icing coverings 蜥蜴皮肤启发的超疏水光热织物，具有分层结构，用于防/除冰覆盖物

IF 4.9 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-05-21 DOI: 10.1016/j.colsurfa.2025.137238

Shipeng Hou , Xi Wang , Guolong Li , Di Zhang , Xiaoming Qian , Songnan Zhang

{"title":"Lizard skin-inspired superhydrophobic photothermal fabric with hierarchical structure for anti/de-icing coverings","authors":"Shipeng Hou , Xi Wang , Guolong Li , Di Zhang , Xiaoming Qian , Songnan Zhang","doi":"10.1016/j.colsurfa.2025.137238","DOIUrl":"10.1016/j.colsurfa.2025.137238","url":null,"abstract":"<div><div>Icing often brings about severe risks, causing financial losses, compromising personal safety, and damaging facilities, etc. Hence, it is urgent to address icing. In this study, a new approach for the efficient anti/de-icing by the semi-aquatic anole lizards was proposed by developing a photothermal superhydrophobic coating. This coating combined polyaniline (PANI) and polydimethylsiloxane (PDMS), creating a superhydrophobic surface with the efficient photothermal conversion properties. The fabrication process included the deposition of PANI via the in-situ polymerization, followed by the impregnation with PDMS. This coating not only enhanced the fabric light-absorbing ability, but also presented significant hydrophobic properties. It had the surface equilibrium temperature of up to 63.5 °C at the light intensity of 1 sun and contact angle of 147°. The anti-icing tests suggested that the coating extended the condensation time of water droplets from 147 s to 338 s and significantly reduced the ice adhesion strength. Furthermore, the photothermal de-icing performance indicated that both the small ice particles and the large overlying ice layer were all rapidly melted and slid down under light irradiation. The coating also exhibited a strong self-cleaning ability, with contaminants readily removed by the water. Durability tests confirmed that the coating was resistant to the UV light, friction and multiple freeze-thawing cycles, ensuring long-term functionality. These findings provide new scope for the development of green and efficient anti/de-icing coated fabric, especially in greenhouses of the agricultural field.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"722 ","pages":"Article 137238"},"PeriodicalIF":4.9,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144116156","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

In situ growth of ZnNiAl-LDHs on floral ZnO with excellent cycling performance for high concentration Congo Red by synergetic adsorption photocatalysis mechanism 利用协同吸附光催化机制，在花状ZnO上原位生长具有优异的高浓度刚果红循环性能的zn - ldhs

IF 4.9 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-05-21 DOI: 10.1016/j.colsurfa.2025.137281

Shuxia Wang , Jiajun He , Erbin Liu , Bo Liang , Jialong Cui , Jiehu Cui , Jialin Cai , Run Yang , Panxu Sun

{"title":"In situ growth of ZnNiAl-LDHs on floral ZnO with excellent cycling performance for high concentration Congo Red by synergetic adsorption photocatalysis mechanism","authors":"Shuxia Wang , Jiajun He , Erbin Liu , Bo Liang , Jialong Cui , Jiehu Cui , Jialin Cai , Run Yang , Panxu Sun","doi":"10.1016/j.colsurfa.2025.137281","DOIUrl":"10.1016/j.colsurfa.2025.137281","url":null,"abstract":"<div><div>The synergistic degradation of dye wastewater by adsorption-photocatalysis composites represents a green and efficient strategy for pollutant removal. This study reports three ZnNiAl-LDHs@floral ZnO composites (ZnNiAl-LDHs@floral ZnO-1, −2, −3 with the increase in the content of the ZnO template) for the synergistic adsorption-photocatalytic degradation of Congo red (CR). Specifically, flower-like ZnO, as a typical photocatalyst with a large specific surface area, serves as a substrate for the in-situ growth of ZnNiAl-LDHs, which possess remarkable adsorption capabilities. This synergy between the two components endows the composite material with enhanced performance in the effective degradation of high-concentration CR (up to 600 mg/L). Dark adsorption experiments show that the adsorption efficiency of the composites is negatively correlated with the content of the zinc oxide template: (65.83 % > 62.31 % > 59.71 %). While synergistic degradation efficiencies followed the opposite order: (98.25 % < 99.06 % < 99.16 %). This demonstrates the inhibitory effect of the increase in ZnO content on dark adsorption and the enhancing effect on photocatalytic performance, as well as the photocatalytic rate (0.0355 min<sup>−1</sup>, 0.0433 min<sup>−1</sup> and 0.0444 min<sup>−1</sup>, respectively). In cycling tests with 200 mg/L CR, the degradation rate remained above 80 % after 10 cycles, indicating stable reusability. These results highlight the promise of in-situ grown ZnNiAl-LDHs@floral ZnO heterojunctions as high-performance photocatalysts for removing high-concentration CR.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"722 ","pages":"Article 137281"},"PeriodicalIF":4.9,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123283","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

Cobalt-doped molybdenum carbide nanoparticles embedded in nitrogen-doped carbon nanosheets for efficient pH-universal hydrogen evolution 钴掺杂碳化钼纳米颗粒嵌入氮掺杂碳纳米片中，用于高效的pH-universal析氢

IF 4.9 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-05-21 DOI: 10.1016/j.colsurfa.2025.137280

Haochen Zhang , Yongyi Zhang , Mingyan Zhang , Dan Han , Jinping Wang , Rui Yang , Chunling Zuo , Xiaoshuang Chen

{"title":"Cobalt-doped molybdenum carbide nanoparticles embedded in nitrogen-doped carbon nanosheets for efficient pH-universal hydrogen evolution","authors":"Haochen Zhang , Yongyi Zhang , Mingyan Zhang , Dan Han , Jinping Wang , Rui Yang , Chunling Zuo , Xiaoshuang Chen","doi":"10.1016/j.colsurfa.2025.137280","DOIUrl":"10.1016/j.colsurfa.2025.137280","url":null,"abstract":"<div><div>The development of non-noble electrocatalysts for efficient hydrogen evolution reaction (HER) provides a viable approach for making a contribution in alleviating energy crisis aspect. In this paper, the cobalt-doped molybdenum carbide nanoparticles embedded in nitrogen-doped carbon (Co-Mo<sub>2</sub>C/NC) nanosheets were fabricated via the calcination of MoO<sub>3</sub> coated with cobalt-based metal-organic framework (ZIF-67) and melamine. The incorporation of cobalt dopant in Mo<sub>2</sub>C weakens the Mo-H bonding strength, giving rise to the optimized desorption of intermediate adsorbed hydrogen (H<sub>ads</sub>) and accelerating the reaction kinetics, which presents remarkable electrocatalytic HER performance in a wide pH range, especially in alkaline medium. Furthermore, the in-situ formed nitrogen-doped carbon has the favorable conductivity and large active surface area. It also facilitates the dispersibility of the active material, therefore boosting the electrocatalytic performance as well as durability. The as-prepared Co-Mo<sub>2</sub>C/NC nanosheets exhibit low overpotentials of 94, 79 and 102 mV to achieve 10 mA cm<sup>−2</sup>, small Tafel slopes of 57.9, 60.6 and 75.8 mV dec<sup>−1</sup> and high exchange current densities of 0.238, 0.497 and 0.465 mA cm<sup>−2</sup> under acidic, alkaline as well as neutral electrolytes, along with good stability. This study shows a novel thought to exploit the highly efficient and pH-universal electrocatalysts for efficient hydrogen generation.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"722 ","pages":"Article 137280"},"PeriodicalIF":4.9,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144116158","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

Violet phosphorus quantum dots and Au nanoparticles co-modified black TiO2 nanorod arrays as enhanced SERS substrate 紫磷量子点和金纳米粒子共修饰黑色TiO2纳米棒阵列作为增强SERS衬底

IF 4.9 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-05-21 DOI: 10.1016/j.colsurfa.2025.137279

Jun Guo , Wei Gan , Ruixin Chen , Zifeng Wang , Xiaofen Xu , Deshuo Meng , Miao Zhang , Zhaoqi Sun

{"title":"Violet phosphorus quantum dots and Au nanoparticles co-modified black TiO2 nanorod arrays as enhanced SERS substrate","authors":"Jun Guo , Wei Gan , Ruixin Chen , Zifeng Wang , Xiaofen Xu , Deshuo Meng , Miao Zhang , Zhaoqi Sun","doi":"10.1016/j.colsurfa.2025.137279","DOIUrl":"10.1016/j.colsurfa.2025.137279","url":null,"abstract":"<div><div>To create exceptional surface-enhanced Raman scattering (SERS) substrates, it is essential to strategically design noble metals or semiconductors. In this research, we accomplished the development of a novel high-performance surface- SERS substrate by violet phosphorus quantum dots (VPQDs) and Au nanoparticles co-sensitized black TiO<sub>2</sub> nanorod arrays (VPQDs/Au/B-TiO<sub>2</sub>). The detection ability of 4-mercaptobenzoic acid (4-MBA) on this novel SERS substrate could reach 1.0 × 10<sup>−14</sup> M. Furthermore, the calculated enhancement factor (<em>EF</em>) reached a remarkable 3.8 × 10<sup>5</sup>. In addition, three suggested pathways for the carriers of VPQDs/Au/B-TiO<sub>2</sub> during SERS process were identified. The enhanced SERS performance of the VPQDs/Au/B-TiO<sub>2</sub> system were credited to the generation of high-energy electrons originating from the localized surface plasmon resonance (LSPR) of Au nanoparticles. Additionally, this system exhibited improved light utilization efficiency by extending light harvest from the ultraviolet to the visible area. Finally, enhanced carrier transfer is also an important complement to improved performance. In conclusion, this research suggests a potential pathway for developing ideal SERS substrate that exhibit outstanding performance.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"722 ","pages":"Article 137279"},"PeriodicalIF":4.9,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123211","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

Calcium ions and dextrin assembly adsorbed onto pyrite surfaces to enhance hydrophilicity: Synergistic coordination mechanism 钙离子和糊精组合吸附在黄铁矿表面增强亲水性：协同配位机制

IF 4.9 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-05-21 DOI: 10.1016/j.colsurfa.2025.137236

Runqing Liu, Wenye Man, Qilin Zhai, Wei Sun

{"title":"Calcium ions and dextrin assembly adsorbed onto pyrite surfaces to enhance hydrophilicity: Synergistic coordination mechanism","authors":"Runqing Liu, Wenye Man, Qilin Zhai, Wei Sun","doi":"10.1016/j.colsurfa.2025.137236","DOIUrl":"10.1016/j.colsurfa.2025.137236","url":null,"abstract":"<div><div>The separation of pyrite from other sulfide minerals during non-ferrous metal extraction holds significant environmental and economic value. Successful separation is closely related to the adsorption of depressants on pyrite surfaces. In this study, species-distribution and density functional theory calculations were used to systematically investigate the adsorption mechanism of the synergistic coordination between Ca<sup>2 +</sup> and dextrin on pyrite surfaces. Species-distribution calculations show that changes in the pH of Ca-bearing solutions primarily affected the content of CaOH<sup>+</sup>, suggesting that CaOH<sup>+</sup> is the key substance influencing the hydrophilicity of pyrite under high-alkalinity conditions. Bond length and sorption energy data suggest weak sorption of dextrin alone on pyrite surfaces, which is enhanced in the presence of CaOH<sup>+</sup>. Electronic difference density, density of states, and frontier orbital analyses showed that dextrin could coordinate adsorption with CaOH<sup>+</sup>, which had been preabsorbed onto the pyrite surface. Hybridization occurred between the O 2p orbital of CaOH<sup>+</sup> and the Fe 3d orbital on pyrite surfaces, as well as between the Ca 3d orbital of CaOH<sup>+</sup> and the O 2p orbital of dextrin, resulting in stable chemical bonds. Surface wettability analysis, collector adsorption capacity analysis, and flotation tests confirmed that CaOH<sup>+</sup> enhanced pyrite depression by dextrin. This study may contribute to the development of environmentally friendly, polysaccharide-based depressants for pyrite.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"722 ","pages":"Article 137236"},"PeriodicalIF":4.9,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138202","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