Journal of Colloid and Interface Science最新文献_第3页

Anion vacancy engineered Cu/ZnIn₂S₄-V_S/TiO₂-V_O S-scheme heterojunction for enhancing photocatalytic overall water splitting. 阴离子空位工程Cu/ZnIn2S4-VS/TiO2-VO S-scheme异质结增强光催化整体水分解。

IF 9.4 1区化学

Journal of Colloid and Interface Science Pub Date : 2025-04-15 Epub Date: 2025-01-09 DOI: 10.1016/j.jcis.2025.01.053

Yijun He, Zhongge Luo, Tong Zhou, Jin Zhang, Zhongqi Zhu, Yumin Zhang, Genlin Zhang, Qingju Liu

{"title":"Anion vacancy engineered Cu/ZnIn2S4-VS/TiO2-VO S-scheme heterojunction for enhancing photocatalytic overall water splitting.","authors":"Yijun He, Zhongge Luo, Tong Zhou, Jin Zhang, Zhongqi Zhu, Yumin Zhang, Genlin Zhang, Qingju Liu","doi":"10.1016/j.jcis.2025.01.053","DOIUrl":"10.1016/j.jcis.2025.01.053","url":null,"abstract":"Heterojunction materials for photocatalytic overall water splitting (POWS) become popular in recent times. However, even in the superior S-scheme heterojunction, the two semiconductor materials still do not have an efficient activity to separate and migrate photogenerated carriers. To further improve the charge separation and enhance the activity of POWS, a novel S-scheme heterojunction photocatalyst, Cu/ZnIn2S4-VS/TiO2-VO, was synthesized using solvothermal and calcination methods. The photocatalyst consists of Cu/ZnIn2S4 with sulfur vacancies (Cu/ZIS-VS) and TiO2 with oxygen vacancies (TiO2-VO). The resultant photocatalyst exhibited optimal hydrogen and oxygen evolution rates of 1245.3 μmol/g/h and 621.4 μmol/g/h, respectively. The apparent quantum efficiency reached 5.8 % at 365 nm. The corresponding characterization and theoretical calculations demonstrated the S-scheme heterojunction between Cu/ZIS-VS and TiO2-VO was successfully synthesized and resulted in a notable enhancement in the effective separation of carriers. Sulfur and oxygen vacancies in ZIS and TiO2, respectively, led to a reduction in their band gaps, which is beneficial for electron migration. Moreover, copper doping augmented the light absorption capabilities. Sulfur vacancies caused charge delocalization which facilitated the transfer of electrons and consequently enhanced the photocatalytic activity. This research provided an innovative perspective on the exploration and development of S-scheme heterojunctions aimed at POWS.","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"684 Pt 1","pages":"481-491"},"PeriodicalIF":9.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142969171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Electrocatalytic methane conversion via in-situ generated superoxide radicals in an aprotic ionic liquid. 非质子离子液体中原位生成超氧自由基的电催化甲烷转化。

IF 9.4 1区化学

Journal of Colloid and Interface Science Pub Date : 2025-04-15 Epub Date: 2025-01-09 DOI: 10.1016/j.jcis.2025.01.046

Huiying Qiu, Ang Li, Zhaohui Wang, Qilan Shangguan, Yanzhi Sun, Yang Tang, Pingyu Wan, Haomin Jiang, Yongmei Chen

{"title":"Electrocatalytic methane conversion via in-situ generated superoxide radicals in an aprotic ionic liquid.","authors":"Huiying Qiu, Ang Li, Zhaohui Wang, Qilan Shangguan, Yanzhi Sun, Yang Tang, Pingyu Wan, Haomin Jiang, Yongmei Chen","doi":"10.1016/j.jcis.2025.01.046","DOIUrl":"10.1016/j.jcis.2025.01.046","url":null,"abstract":"The electrochemical activation and partial oxidation of methane are highly attractive to enable the direct conversion in a sustainable and decentralized way. Herein, we report an electrochemical system in a non-diaphragm electrochemical bath to convert CH4 to CH3OH and CH3CH2OH at room temperature, in which V3O7·H2O as the anodic catalyst to activate CH4 and an aprotic ionic liquid [BMIM]BF4 as supporting electrolyte to control superoxide radicals (O2-) as the main active oxygen species generated on cathode. As a result, methanol and ethanol were identified as the liquid products, and the superior methanol Faraday efficiency (FE) of 32.2 % and selectivity of 76.8 % can be reached. Molecular dynamics (MD) simulation indicates that interaction between CH4 molecules and [BMIM]BF4, which enhances the mass transfer in electrochemical reaction. Density function theory (DFT) calculation results suggest that the V sites in V3O7·H2O enhanced the chemisorption and dissociation of CH4 molecules on anode surface, then superoxide radicals (O2-) are supposed to be involved in the formation of methanol and ethanol.","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"684 Pt 1","pages":"449-456"},"PeriodicalIF":9.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142969191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Efficacy and durability of cobalt sulfide nanoparticles and axial sulfur-coordinated cobalt single-atom composite sites in hydrogenative nitroaromatics decontamination. 硫化钴纳米颗粒和轴向硫配位钴单原子复合位点在氢化硝基芳烃净化中的效能和耐久性。

IF 9.4 1区化学

Journal of Colloid and Interface Science Pub Date : 2025-04-15 Epub Date: 2025-01-09 DOI: 10.1016/j.jcis.2025.01.049

Yangke Long, Guicong Xiao, Jian Dai, Yanyun Chen, Hua-Yue Zhu, Dan Peng, Huosheng Li

{"title":"Efficacy and durability of cobalt sulfide nanoparticles and axial sulfur-coordinated cobalt single-atom composite sites in hydrogenative nitroaromatics decontamination.","authors":"Yangke Long, Guicong Xiao, Jian Dai, Yanyun Chen, Hua-Yue Zhu, Dan Peng, Huosheng Li","doi":"10.1016/j.jcis.2025.01.049","DOIUrl":"10.1016/j.jcis.2025.01.049","url":null,"abstract":"Emerging single-atom materials and metal sulfides hold significant promise as alternatives to precious metal catalysts for nitroaromatics conversion; however, their intrinsic activity and durability remain insufficiently understood. Herein, sulfur and nitrogen co-doped carbon matrices incorporating CoS nanoparticles and single-atom Co with Co-N4-S1 coordination were constructed through a facile pyrolysis approach. Advanced characterization techniques, such as X-ray absorption fine structure (XAFS) and aberration-corrected electron microscopy, unveiled unique structural features underpinning exceptional catalytic efficiency and recyclability. The catalyst achieved a specific catalytic rate of 134 min-1 g-1 L for p-nitrophenol (PNP) hydrogenation, outperforming many noble metal-based catalysts. Experimental and theoretical analyses identified the Co-N4-S1 single-atom moiety as the primary active site, demonstrating remarkable structural stability. Axial sulfur coordination was found to fine-tune the electronic state of the central Co atom, mitigating the overbinding of reaction intermediates and enhancing PNP conversion efficiency. In contrast, CoS nanoparticles exhibited limited recyclability, with agglomeration, cobalt hydroxide formation, and dissolution observed during repeated use. This study presents a highly efficient catalyst for nitroaromatics conversion and provides a foundational framework for understanding the durability and mechanistic roles of cobalt-based active sites.","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"684 Pt 1","pages":"540-551"},"PeriodicalIF":9.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142977043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

P2-Na_0.67Mn_0.7Ni_0.2Co_0.1O₂ stabilized by optimal active facets for sodium-ion batteries. 钠离子电池用最佳活性面稳定的P2-Na0.67Mn0.7Ni0.2Co0.1O2。

IF 9.4 1区化学

Journal of Colloid and Interface Science Pub Date : 2025-04-15 Epub Date: 2025-01-06 DOI: 10.1016/j.jcis.2025.01.037

Xin-Yao Liu, Zhi-Xiong Huang, Jin-Zhi Guo, Hong-Yan Lü, Dai-Huo Liu, Bao Li, Xing-Long Wu

{"title":"P2-Na0.67Mn0.7Ni0.2Co0.1O2 stabilized by optimal active facets for sodium-ion batteries.","authors":"Xin-Yao Liu, Zhi-Xiong Huang, Jin-Zhi Guo, Hong-Yan Lü, Dai-Huo Liu, Bao Li, Xing-Long Wu","doi":"10.1016/j.jcis.2025.01.037","DOIUrl":"10.1016/j.jcis.2025.01.037","url":null,"abstract":"Considering factors such as crustal reserves, atomic mass, redox potential and energy density, sodium-ion batteries (SIBs) are regarded as the most promising alternative to lithium-ion batteries (LIBs). Transition metal-based layered oxides, especially typical NaxMnO2, stand out among cathode materials due to their low cost and high energy density. However, NaxMnO2 cathodes face several challenges, including Jahn-Teller distortion, manganese dissolution, structural collapse, irreversible phase transition and significant capacity loss. In addition, the significant changes in lattice parameters can lead to the formation of cracks and nanovoids. It has been reported that optimizing the assembly of surface facets can be beneficial to electrochemical properties. In this work, Na0.67MnO2 (NMO) with a multilayered structure featuring (distinct {010} active facets and Na0.67Mn0.7Ni0.2Co0.1O2 (NMNCO) with a homogeneous polyhedra structure featuring distinct {001} active facets were synthesized. The initial charge capacity of NMNCO reached 110.1 mA h g-1 at a current density of 10 mA g-1. After 100 cycles at 100 mA g-1, it displayed a good cycling retention rate of 82.1 %. The distribution of relaxation times (DRT) reveals the facile transfer of Na+ ions in the NMNCO cathode. In addition, the effects of Ni and Co are revealed, and the mechanism underlying the relationship between distinct surface facet and crack formation is studied.","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"684 Pt 1","pages":"523-530"},"PeriodicalIF":9.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142977045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

An innovative strategy for constructing multicore yolk-shell Si/C anodes for lithium-ion batteries. 构建锂离子电池多核壳型硅/碳阳极的创新策略。

IF 9.4 1区化学

Journal of Colloid and Interface Science Pub Date : 2025-04-15 Epub Date: 2025-01-10 DOI: 10.1016/j.jcis.2025.01.078

Yingjun Qiao, Yuxin Hu, Zhiqiang Qian, Meizhen Qu, Zhong Liu

{"title":"An innovative strategy for constructing multicore yolk-shell Si/C anodes for lithium-ion batteries.","authors":"Yingjun Qiao, Yuxin Hu, Zhiqiang Qian, Meizhen Qu, Zhong Liu","doi":"10.1016/j.jcis.2025.01.078","DOIUrl":"10.1016/j.jcis.2025.01.078","url":null,"abstract":"The yolk-shell architecture offers a promising solution to the challenges of silicon (Si) anodes in lithium-ion batteries (LIBs), particularly in addressing the significant volume changes that occur during charge and discharge cycles. However, traditional construction methods often rely on sacrificial templates and acid or alkali etching, which limits industrial applicability. In this work, we successfully constructed a silicon/carbon (Si/C) composite with a multicore yolk-shell structure using scalable spray drying technology and in-situ growth of metal-organic frameworks (MOFs) at room temperature. By controlling the spray drying parameters and the size of the MOF, we achieved a controllable adjustment of cavity size and shell integrity without the need for sacrificial templates, facilitating large-scale preparation. Electrochemical characterization shows that the composites exhibit impressive performance, achieving a reversible specific capacity of 1,054.5 mAh g-1 after 100 cycles at 0.5 A g-1, and retaining 734.8 mAh g-1 after 400 cycles at 1 A g-1. Moreover, finite element analysis (FEA) revealed another reason why the yolk-shell structure improves the performance of Si anodes: the presence of cavities promotes ion diffusion processes. This study provides a new synthetic paradigm for preparing Si-C composite materials with yolk shell structure and offers new insights into the improvement mechanism of this structure.","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"684 Pt 1","pages":"678-689"},"PeriodicalIF":9.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142997762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 high-entropy phosphides with phosphorus vacancies as robust bifunctional catalysts for efficient water splitting. 具有磷空位的协同高熵磷化物作为高效水裂解的稳健双功能催化剂。

IF 9.4 1区化学

Journal of Colloid and Interface Science Pub Date : 2025-04-15 Epub Date: 2025-01-09 DOI: 10.1016/j.jcis.2025.01.055

Qingyuan Yuan, Tingting Liu, Dui Ma, Yong Liao, Weizhi Wang, Hongtao Meng, Qifan You, Fanyan Zeng, Meilan Xie, Hongbo Huang, Cailing Liu, Xiao Liang

{"title":"Synergistic high-entropy phosphides with phosphorus vacancies as robust bifunctional catalysts for efficient water splitting.","authors":"Qingyuan Yuan, Tingting Liu, Dui Ma, Yong Liao, Weizhi Wang, Hongtao Meng, Qifan You, Fanyan Zeng, Meilan Xie, Hongbo Huang, Cailing Liu, Xiao Liang","doi":"10.1016/j.jcis.2025.01.055","DOIUrl":"10.1016/j.jcis.2025.01.055","url":null,"abstract":"High-entropy phosphides (HEPs) have garnered increasing interest as innovative electrocatalysts for water splitting, highlighted by their distinctive catalytic activity, elemental synergy, and tunable electronic configuration. Herein, a novel electrode comprising CoNiCuZnFeP nanocubes with rich phosphorus vacancies was fabricated through coprecipitation and phosphorization two-step method. The synergistic interaction among metal elements and the modulation of the electronic configuration by phosphorus vacancies augmentation enhance the catalytic performance for both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). The CoNiCuZnFeP catalyst demonstrates overpotentials of 318 mV for HER and 204 mV for OER at 100 mA cm-2, while maintaining a remarkable durability exceeding 700 h. The catalyst, as the dual-electrode for water electrolysis, requires a voltage of 1.74 V to attain 100 mA cm-2. Theoretical calculations reveal that the combination of high entropy and phosphorus vacancies can effectively regulate the local charge distribution and electronic characteristics of phosphides, leading to the optimization of adsorption energies and the reduction of the potential energy barrier for water decomposition. This study provides an attractive OER electrocatalyst for renewable hydrogen via efficient water splitting, and paves the way for the design of efficient and stable electrocatalysts with high-entropy materials.","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"684 Pt 1","pages":"783-791"},"PeriodicalIF":9.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142997385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Ag-boosted hydroxyl adspecies generation and carbonyl intermediates release for Pt-Ag-catalyzed ethylene glycol electro-oxidation. ag催化乙二醇电氧化的氢氧自由基生成和羰基中间体释放。

IF 9.4 1区化学

Journal of Colloid and Interface Science Pub Date : 2025-04-15 Epub Date: 2025-01-04 DOI: 10.1016/j.jcis.2025.01.009

Lin Huang, Maoqing Chen, Ying Yang, Qingshou Zheng, Li Gu, Ruobing Cheng, Xuebo Cao

{"title":"Ag-boosted hydroxyl adspecies generation and carbonyl intermediates release for Pt-Ag-catalyzed ethylene glycol electro-oxidation.","authors":"Lin Huang, Maoqing Chen, Ying Yang, Qingshou Zheng, Li Gu, Ruobing Cheng, Xuebo Cao","doi":"10.1016/j.jcis.2025.01.009","DOIUrl":"10.1016/j.jcis.2025.01.009","url":null,"abstract":"Electro-reforming of organics such as alcohols into commodity chemicals and H2 powered by renewables is intriguing and prevailing with the remarkable renaissance of electrochemical technology. Integrating Pt/Pd with an auxiliary metal, metal oxide, and metal hydroxide are feasible strategies to design the desirable catalysts toward alcohols electro-oxidation reactions. These catalysts however have high affinity toward carbonyl intermediates that occupy and poison the active sites. Thus, the target products suffer from poor selectivity. To address these issues, a facile binary Pt-Ag alloy nanowires (NWs) catalytic system was reported for efficient electro-oxidative reforming of ethylene glycol (EG), yielding glycolate with a selectivity of 91.5 %, an EG conversion of 96.4 %, and Faradaic efficiency (FE) of 87.4 %. Experimental and theoretical investigations revealed that Ag-induced electronic structure perturbations in Pt0.66Ag catalyst boosted the kinetics and robustness as a conventional promoter toward EG electro-oxidation reaction (EGOR). Moreover, the one-electron oxidation of water/hydroxide ion to generate abundant hydroxyl adspecies (OHad) on Ag served as another crucial promoter for efficient dehydrogenation, glycolate formation, and carbonyl intermediates release via a highly efficient, noncompetitive Langmuir-Hinshelwood (L-H) mechanism, but not the competitive L-H mechanism or the Eley-Rideal (E-R) mechanism. These findings provide new insights into the selective alcohol electro-oxidation reaction, and facilitate the generation of commodity chemicals via partial electro-oxidation reactions.","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"684 Pt 2","pages":"197-206"},"PeriodicalIF":9.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142997636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Construction of layered micro-/nano-structured MoNiCo-S cathode and broad bean shell derived carbon anode for hybrid supercapacitors. 混合超级电容器层状微纳结构MoNiCo-S阴极和蚕豆壳碳阳极的制备。

IF 9.4 1区化学

Journal of Colloid and Interface Science Pub Date : 2025-04-15 Epub Date: 2025-01-13 DOI: 10.1016/j.jcis.2025.01.112

Chen Hao, Jizheng Tan, Zijun Lv, Mingjiang Jiang, Chenghao Ni, Yuru Shen, Xiaohong Wang

{"title":"Construction of layered micro-/nano-structured MoNiCo-S cathode and broad bean shell derived carbon anode for hybrid supercapacitors.","authors":"Chen Hao, Jizheng Tan, Zijun Lv, Mingjiang Jiang, Chenghao Ni, Yuru Shen, Xiaohong Wang","doi":"10.1016/j.jcis.2025.01.112","DOIUrl":"10.1016/j.jcis.2025.01.112","url":null,"abstract":"Transition metal sulfides, despite their abundance of electrochemically active sites, often demonstrate inadequate rate performance and mechanical stability. The development of a multi-dimensional hierarchical architecture has proven to be an effective approach to address the limitations associated with sulfides. In the present study, MoNiCo-S nanorods featuring hierarchical micro-/nano-structures were successfully synthesized through a straightforward methodology that involved \"in situ growth-etching-vulcanization\". The one-dimensional nanostructure CoMoO4 served as both the substrate and metal source for the in-situ growth of ZIF-67. Subsequently, Lewis acid was introduced to facilitate the formation of hydroxides, ultimately leading to the synthesis of sulfides via ion exchange with sulfur ions. Due to its rational design and element composition, MoNiCo-S exhibited excellent capacitance (3125.1 F/g at 1 A/g) and cycling stability (capacitance retention rate of 72.9 % over 5,000 cycles). In addition, the broad bean shell derived carbon (KBBC), prepared through a carbonization and activation process, demonstrated a specific capacitance of 295.0 F/g and a cyclic capacitance retention of 99.6 %. The assembled MoNiCo-S//KBBC asymmetric supercapacitor devices achieves a high energy density of 78.5 Wh kg-1 at a power density of 1004.3 W kg-1. After 10,000 cycles, the device exhibited a capacitance retention rate of 107.9 %, indicating excellent cycling stability. This research contributes significantly to the advancement of sulfide materials in the context of performance optimization design.","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"684 Pt 2","pages":"262-276"},"PeriodicalIF":9.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142997731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Phytantriol phase behaviour in deep eutectic solvent-water mixtures. 植物三醇在深度共晶溶剂-水混合物中的相行为。

IF 9.4 1区化学

Journal of Colloid and Interface Science Pub Date : 2025-04-15 Epub Date: 2025-01-09 DOI: 10.1016/j.jcis.2025.01.045

Saffron J Bryant, Tamar L Greaves, Gary Bryant

{"title":"Phytantriol phase behaviour in deep eutectic solvent-water mixtures.","authors":"Saffron J Bryant, Tamar L Greaves, Gary Bryant","doi":"10.1016/j.jcis.2025.01.045","DOIUrl":"10.1016/j.jcis.2025.01.045","url":null,"abstract":"Deep eutectic solvents are highly tailorable non-aqueous solvents with potential applications ranging from energy catalysis to cryopreservation. Self-assembled lipid structures are already used in a variety of industries including cosmetics, drug delivery and as microreactors. However, most research into lipid self-assembly has been limited to aqueous solvents. This paper explores the self-assembly of a well-known lipid, phytantriol, in different deep eutectic solvents composed of choline chloride with urea, glycerol, or ethylene glycol, and one composed of betaine and glycerol. High-throughput small angle X-ray scattering was employed to examine self-assembly of this lipid in these deep eutectic solvents, and in mixtures with water from 25 to 66 °C. Choline chloride:urea and neat betain:glycerol supported complex phase formation including the Pn3m cubic phase, and an inverse hexagonal (HII) phase, while choline chloride:glycerol and choline chloride:ethylene glycol favoured amorphous or unstructured lipid assemblies. In all cases, water contents above 50 wt% favoured the formation of highly structured phases. These results demonstrate that deep eutectic solvents can support lipid assembly, but also that small changes to the solvent can lead to significant changes in lipid behaviour. This provides an avenue for solvent-controlled tailoring of lipid structures as well as a mechanism for targeted release of cargo, such as through simple addition of water to trigger a phase change. These results provide significant new insight into solvent-controlled lipid self-assembly with far-reaching applications.","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"684 Pt 2","pages":"277-286"},"PeriodicalIF":9.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142997801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Two-dimensional ZIF-L derived dual Fe/FeN_x sites for synergistic efficient oxygen reduction in alkaline and acid media. 二维ZIF-L衍生的双Fe/FeNx位点在碱性和酸性介质中协同高效氧还原。

IF 9.4 1区化学

Journal of Colloid and Interface Science Pub Date : 2025-04-15 Epub Date: 2025-01-13 DOI: 10.1016/j.jcis.2025.01.089

Jun-Fei Gu, Jichao Wang, Caixia Wang, Jin Li, Cheng Chen, Ni Zhang, Xiang-Ya Xu, Somboon Chaemchuen

{"title":"Two-dimensional ZIF-L derived dual Fe/FeNx sites for synergistic efficient oxygen reduction in alkaline and acid media.","authors":"Jun-Fei Gu, Jichao Wang, Caixia Wang, Jin Li, Cheng Chen, Ni Zhang, Xiang-Ya Xu, Somboon Chaemchuen","doi":"10.1016/j.jcis.2025.01.089","DOIUrl":"10.1016/j.jcis.2025.01.089","url":null,"abstract":"Fe-N-C catalysts have emerged as the most promising alternatives to commercial Pt/C catalysts for oxygen reduction reaction (ORR) due to their cost-effectiveness and favorable activity. Herein, a dual-site Fe/FeNx-NC catalyst was synthesized via a green, in situ doping strategy using two-dimensional Fe-doped ZIF-L as a nitrogen-rich precursor. The catalyst integrated Fe nanoparticles (NPs) and FeNx sites anchored on carbon nanotubes, intertwined with nitrogen-doped porous carbon nanosheets, achieving a high active site density and graphitisation. Electrochemical tests revealed that the optimized Fe/FeNx-NC-1 exhibited significant ORR activity, with a half-wave potential of 0.92 V and 0.80 V for alkaline and acidic medium, respectively. Zn-air batteries employing Fe/FeNx-NC-1 delivered a peak power density of 168 mW·cm-2 and a specific capacity of 790 mAh·g-1, outperforming those of Pt-based catalysts. Density functional theory calculations demonstrated a reduced free energy barrier for the rate-determining step (0.48 eV) compared to single-site Fe-N4 models (0.79 eV). The synergy between Fe NPs and FeNx optimized ORR intermediate adsorption and facilitated charge/mass transfer. This study offers valuable insights for the development of advanced energy conversion systems.","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"684 Pt 2","pages":"159-169"},"PeriodicalIF":9.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142997859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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