Journal of Colloid and Interface Science最新文献

{"title":"The critical effect of different additive interlayer anions on NiFe-LDH for direct seawater splitting: A theoretical study","authors":"Lu Wang ,&nbsp;Ying Wang ,&nbsp;Liang Zhou ,&nbsp;Jing-yao Liu ,&nbsp;Zhijian Wu","doi":"10.1016/j.jcis.2024.11.069","DOIUrl":"10.1016/j.jcis.2024.11.069","url":null,"abstract":"<div><div>Direct seawater electrolysis greatly alleviates the shortage of freshwater resources, emerging as a promising approach for hydrogen production. Unfortunately, the slow kinetics of oxygen evolution reaction (OER) and the complex seawater environment, especially the chloride oxidation reaction (ClOR), pose significant challenges for the design of direct seawater electrolysis catalysts. For the sake of enhancing corrosion resistance to chloride ions (Cl⁻), an alkaline environment is settled for increasing the potential difference between OER and competitive ClOR. NiFe-LDH has been recognized as a benchmark catalyst in alkaline environment owing to its unique advantages. However, in strongly alkaline environment, the deposition of Mg(OH)₂ and Ca(OH)₂ at the cathode limits the overall efficiency of direct seawater electrolysis. In this study, we have investigated the underlying effect of four different interlayer anions (PO₄³⁻, SO₄²⁻, CO₃²⁻, and NO₃⁻) on the OER activity, selectivity, and pH application range of NiFe-LDH using density functional theory. Furthermore, we have explored the intrinsic correlations between electronic structure and catalytic performance. Our results confirm that the interlayer anions play a favorable role in promoting OER activity. Among them, NiFe-LDH with PO₄³⁻ remarkably outperforms the other interlayer anions in terms of OER activity and selectivity, reducing the OER overpotential (<em>η</em>) to 0.29 V and overcoming the limitations associated with high pH conditions. Most importantly, there is a linear relationship between <em>η</em> and the charge transferred from the interlayer anion to the catalyst surface (Δ<em>Q</em>_tot), implying that the interlayer anions are able to regulate the catalytic activity through essential charge transfer. This study provides theoretical insights into the design and development of advanced OER catalysts that can simultaneously suppress ClOR for direct seawater electrolysis.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"680 ","pages":"Pages 43-52"},"PeriodicalIF":9.4,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142646242","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}

{"title":"Efficient urea electrosynthesis from nitrite and CO2 reduction on single W atom catalyst","authors":"Di Yuan ,&nbsp;Yafu Jiang ,&nbsp;Wenyu Du ,&nbsp;Dongwei Ma ,&nbsp;Ke Chu","doi":"10.1016/j.jcis.2024.11.075","DOIUrl":"10.1016/j.jcis.2024.11.075","url":null,"abstract":"<div><div>Electroreduction of CO₂ and NO₂⁻ to urea (ECNU) provides a fascinating method for concurrently migrating polluted NO₂⁻ and producing value-added urea. In this study, atomically dispersed W on MoS₂ (W₁/MoS₂) is designed as an efficient ECNU catalyst, which exhibits the highest Faraday efficiency of 60.11 % and urea yield rate of 35.80 mmol h⁻¹ g⁻¹ in flow cell. Atomic characterizations reveal that W single atoms exist as isolated W₁-S₃ moieties on MoS₂. Combined theoretical calculations and operando spectroscopic measurements demonstrate that the enhanced ECNU performance of W₁/MoS₂ arises from the construction of W₁-S₃ moieties that can promote C<img>N coupling and hydrogenation energetics, whilst suppressing the competing side reactions.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"680 ","pages":"Pages 36-42"},"PeriodicalIF":9.4,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142646053","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}

{"title":"High-efficiency electrocatalytic hydrogen evolution in NiCo-Mo2C tandem nanoreactors with bimetallic modulation and crystal plane synergy","authors":"Xin Chen ,&nbsp;Aihua Jiang ,&nbsp;Xiu Cao ,&nbsp;Simin Tao ,&nbsp;Lingling Chen ,&nbsp;Hongyu Liu ,&nbsp;Laijun Liu ,&nbsp;Xinyu Li ,&nbsp;Jianrong Xiao","doi":"10.1016/j.jcis.2024.11.074","DOIUrl":"10.1016/j.jcis.2024.11.074","url":null,"abstract":"<div><div>Mo₂C, with an electronic structure closely resembling that of Pt, holds significant promise as a catalyst for nonprecious metal-based electrocatalytic hydrogen evolution reactions (HER). This study presents the design and synthesis of Ni and Co bimetallic-doped Mo₂C (NiCo-Mo₂C) tandem nanoreactors, engineered by leveraging the concept of a high-gain transistor cascade amplifier. In NiCo-Mo₂C material, each monomer layer on Mo₂C rod functions as an individual electrocatalytic nanoreactor, with the rod supporting a tandem configuration of these units. The combined modulation of Ni and Co at NiCo-Mo₂C interface increases the electron cloud density around Mo and shifts the d-band center negatively, effectively reducing Mo–H* binding energy. The synergy between NiCo-Mo₂C (1<!--> <!-->0<!--> <!-->1) and (0<!--> <!-->0<!--> <!-->2) crystal planes facilitates both water dissociation and H* desorption from Mo sites. This tandem configuration of multicatalytic units achieves enhanced hydrogen evolution, demonstrated by the low overpotential at 10 mA·cm⁻² (η₁₀) values of 129 mV and 180 mV and Tafel slopes of 84 mV·dec⁻¹ and 85 mV·dec⁻¹ in 1 M KOH and 0.5 M H₂SO₄, respectively. Through bimetallic modulation, crystal plane synergy, and tandem structuring, this work advances a novel approach to optimizing HER kinetics, presenting a valuable strategy for developing highly efficient, nonprecious metal-based electrocatalysts.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"680 ","pages":"Pages 53-65"},"PeriodicalIF":9.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645961","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}

{"title":"Ultra-highly conductive optoelectronic modulated single-molecule nickel bis(dithiolene) junctions with strong molecule-electrode coupling","authors":"Yiming Chen ,&nbsp;Xinwei Wang ,&nbsp;Xijuan Wang ,&nbsp;Xinhuan Zhang ,&nbsp;Chuanxiang Chen ,&nbsp;Saisai Yuan ,&nbsp;Ping Duan ,&nbsp;Jin Li","doi":"10.1016/j.jcis.2024.11.085","DOIUrl":"10.1016/j.jcis.2024.11.085","url":null,"abstract":"<div><div>Strong molecule-electrode coupling originating from orbit hybridization between gold and the delocalized molecular wires in single-molecule junctions facilitates facile transport towards smart molecular devices. In this paper, we report ultra-highly conductive single-molecule circuits based on highly delocalized nickel bis(dithiolene) (NiS₄) molecular junctions using scanning tunneling microscope break junction technique. Single-molecule charge transport measurement of both NiS₄ reveals they exhibits high conductance of 10^−1.49 <em>G</em>₀ and 10^−1.51 <em>G</em>₀, respectively. Moreover, under intervention of high bias voltage the molecular conductance could be further improved to approximately 10^−1.00 <em>G</em>₀, the highest value reported to date with similar molecular lengths. Theoretical calculations suggest that the strong hybridization of the π-channels and the gold electrodes in both junctions exists and it further extends from molecule-electrode interfaces to metal electrodes as visualized by the isosurface plots of the transmitting eigenstate, which lead to not only a distinct energy shift of the dominated LUMO peaks toward Fermi level, but also broad peaks in the LUMO resonance in the transmission functions. In addition, the both molecular junctions show remarkable photoconductance of approximately 10^−1.00 <em>G</em>₀ under resonant light excitation, due to possible exciton binding in these junctions. Interestingly, the conductance switching of both molecular junctions under optoelectronic modulation is highly reversible, forming a multi-stimulus responsive molecular switch. This work not only provides a building block for fabricating highly conducting molecular wires with strong molecule-electrode coupling, but also lays a foundation for designing optoelectronic modulated functional molecule-scale devices.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"680 ","pages":"Pages 96-104"},"PeriodicalIF":9.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142653258","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}

{"title":"A soft electronic skin simulating the multi-scale human touch for the detection of fruit freshness","authors":"Xiaoya Wei ,&nbsp;Jing Tian ,&nbsp;Cong Wang ,&nbsp;Sheng Cheng ,&nbsp;Xu Fei ,&nbsp;Fawen Yin ,&nbsp;Longquan Xu ,&nbsp;Yao Li","doi":"10.1016/j.jcis.2024.11.084","DOIUrl":"10.1016/j.jcis.2024.11.084","url":null,"abstract":"<div><div>Realizing biomimicry for human tactile perception is a meaningful challenge. In this work, a soft matter system with multi-scale energy dissipation structure is designed to realize flexible sensing and detection by biomimetic human touch. At the molecular scale, the supramolecular interactions are introduced into the hydrogel system, including the hydrophobic interaction and the ion attraction between macromolecular segments. At the micron scale, a system of “button” permeable macromolecules is constructed to absorb external forces and store energy through the sliding of macromolecules inside the “button”. By adjusting the molecular scale and micron scale structure, the obtained hydrogels demonstrate excellent mechanical properties, electrical conductivity and response sensitivity. This novel hydrogel withstands 200 compression cycles without creep deformation and outputs a stable response signal in terms of compression cycles with the signal volatility of around 1 %. Based on its good durability, this hydrogel, which simulates human multi-scale tactility, has outstanding application potential in detecting fruit damage that is difficult to observe. Notably, the construction of this multi-scale energy dissipation structure is universal for increasing the mechanical property of ACG hydrogels. The high-strength hydrogels adjusted by this strategy is significantly toughened, and the mechanical properties increased by 38 %. This work is of guiding significance for the preparation of high-performance hydrogels.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"680 ","pages":"Pages 66-76"},"PeriodicalIF":9.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142646040","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}

{"title":"Multifunctional aramid-based composite quasi-solid-state electrolytes for flexible structure batteries","authors":"Wenjie He ,&nbsp;Zhigang Li ,&nbsp;JingZeng Gu ,&nbsp;Gang Qin ,&nbsp;Jia Yang ,&nbsp;Xinxin Cao ,&nbsp;Min Zhang ,&nbsp;Jiangmin Jiang","doi":"10.1016/j.jcis.2024.11.071","DOIUrl":"10.1016/j.jcis.2024.11.071","url":null,"abstract":"<div><div>The integration of flexible structure batteries (FSBs) into electronic equipment is an effective method to significantly improve energy efficiency, whereas traditional battery separators, with poor mechanical properties, low liquid electrolyte capture ability, and weak thermal stability, cannot meet the practical requirements of various applications. To address these challenges, in this study, a multifunctional composite quasi-solid-state electrolyte (CQE) was synthesized by electrospinning poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) fibers on both sides of an aramid nanofibers (ANFs) fibrous film for application in high-performance FSBs. Here, the ANF film serves as a structural framework, thus enhancing the mechanical properties and thermal stability of the CQE, while the “thermal closed-hole effect” and liquid electrolyte capture capability of the PVDF-HFP film in the CQE improve the overall safety of the FSBs. The design strategy of combining 3D-printed electrodes and functional CQE is essential to achieving the integration of structural support and energy storage. Due to the unique characteristics of the CQE, the assembled full-battery (LiFePO₄//Li₄Ti₅O₁₂) demonstrates superior cycling stability (500 cycles). The assembled rectangular bag battery was also shown to be capable of powering an LED lamp under bending conditions and external force, thus providing valuable insights into FSBs design in the field of energy storage.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"680 ","pages":"Pages 77-84"},"PeriodicalIF":9.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142646001","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}

{"title":"Construction of directional electron transfer from Pt to MoO2-x in macroporous structure for efficient hydrogen oxidation","authors":"Rundong Ma ,&nbsp;Han Tian ,&nbsp;Xu Yu ,&nbsp;Xiangzhi Cui ,&nbsp;Xinmei Hou ,&nbsp;Shengli An","doi":"10.1016/j.jcis.2024.11.073","DOIUrl":"10.1016/j.jcis.2024.11.073","url":null,"abstract":"<div><div>Hydrogen oxidation reaction (HOR) as the anode reaction in proton exchange membrane fuel cell, usually suffers from the high loading of platinum (Pt) and subsequent CO poisoning especially by using industrial crude hydrogen as fuel. In this work, we propose a directional electron transfer route from Pt to MoO_2-<em>_x</em> in the macroporous structure to significantly enhance the HOR activity as well as the CO tolerance, which is constructed by interface engineering and defect strategy to anchor highly dispersed Pt nanoparticles onto the three-dimensional MoO_2-<em>_x</em>-C framework. The optimized 2Pt-MoO_2-<em>_x</em>-C with 1.02 wt% Pt demonstrates higher HOR peak current density (3.57 mA cm⁻²) and nearly 25 times higher mass activity than 20 wt% Pt/C. The excellent HOR performance is attributed to the synergistic effect between Pt and MoO_2-<em>_x</em> species, in which the charge transfer from Pt to MoO_2-<em>_x</em> improves H₂ adsorption ability of Pt and accelerates the activation of H₂ due to the reduced hydrogen binding energy of MoO_2-<em>_x</em> caused by Pt-O construction, leading to the release of H* thereby the enhancement of HOR activity. The construction of three-dimensional macroporous structure enhances the HOR dynamics by promoting the conductivity, mass transfer and the exposure of active sites. Moreover, the formed Mo-OH in Pt-MoO_2-<em>_x</em>-C can effectively react with CO species to remove the CO poisoning of Pt, endowing the excellent CO tolerance.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"680 ","pages":"Pages 1-10"},"PeriodicalIF":9.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643654","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}

{"title":"Enhanced dielectric performances of strontium barium titanate nanorod composites via improved interfacial compatibility","authors":"Yongxian Liu ,&nbsp;Bo Tang ,&nbsp;Zaixing Wang ,&nbsp;Yayao Jiao ,&nbsp;Qingqing Hou ,&nbsp;Zhangting Dang ,&nbsp;Xiufu Hua ,&nbsp;Liping Wei ,&nbsp;Lingling Wang ,&nbsp;Renbo Wei","doi":"10.1016/j.jcis.2024.11.088","DOIUrl":"10.1016/j.jcis.2024.11.088","url":null,"abstract":"<div><div>High performance film capacitor has attracted widespread attention due to their increasing applications in electronic devices. However, the insufficient dielectric properties of dielectrics in capacitors severely restrict their practical application. In this work, the dielectric performances of polyarylene ether nitrile (PEN) are effectively enhanced by the synthesizing and employing of carboxylated PEN (CPEN) modified one-dimensional (1D) strontium barium titanate nanorod (BSTNR) (CPEN@BSTNR), as well as applying of hot stretching technique. CPEN@BSTNR is prepared via the synthesizing of BSTNR, modifying with γ-Aminopropyl triethoxysilane (KH550), and grafting by CPEN. Deriving from the 1D structure of BSTNR and the peripheral modification by CPEN, compatibility of CPEN@BSTNR in PEN has been significantly improved. Moreover, CPEN@BSTNR orients in the polymer matrix attributing to the hot stretching. Consequently, the hot stretched 16 wt% CPEN@BSTNR/PEN film exhibits an increased dielectric constant of 17.30 and maintained a breakdown strength of 204.1 kV/mm. As a result, this stretched composite film demonstrates an energy density up to 3.19 J/cm³, with a 300 % improvement over pure PEN. This enhanced dielectric properties of PEN presents a promising avenue for the fabrication of high performance film capacitors.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"680 ","pages":"Pages 85-95"},"PeriodicalIF":9.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645956","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}

{"title":"Cr-doped NiFe sulfides nanoplate array: Highly efficient and robust bifunctional electrocatalyst for the overall water splitting and seawater electrolysis","authors":"Yujia He ,&nbsp;Xuan Yang ,&nbsp;Mingyuan Jiang ,&nbsp;Fuguang Liu ,&nbsp;Jinming Zhang ,&nbsp;Huiying Li ,&nbsp;Liang Cui ,&nbsp;Jiangtao Xu ,&nbsp;Xuqiang Ji ,&nbsp;Jingquan Liu","doi":"10.1016/j.jcis.2024.11.072","DOIUrl":"10.1016/j.jcis.2024.11.072","url":null,"abstract":"<div><div>To replace precious metals and reduce production costs for large-scale hydrogen production, developing stable, high-performance transition metal electrocatalysts that can be used in a wide range of environments is desirable yet challenging. Herein, a self-supported hybrid catalyst (NiFeCrS_x/NF) with high electrocatalytic activity was designed and constructed using conductive nickel foam as a substrate via manipulation of the cation doping ratio of transition metal compounds. Due to the strong coupling synergy between the metal sulfides NiS₂, Fe₉S₁₁, and Cr₂S₃, as well as their interaction with the conductive nickel foam (NF), the energy barrier for catalytic reactions is reduced, and the charge transfer rate is enhanced. This significantly improves the hydrogen evolution reaction (HER) performance of NiFeCrS_x/NF, achieving a current density of 10 mA cm⁻² with an overpotential of just 66 mV. Furthermore, doping with chromium generates different valence states of Cr during the catalytic process, which can synergize with the high-valent Fe and Ni, promoting the formation of oxygen vacancies and enriching the active sites for the oxygen evolution reaction (OER). Consequently, at a current density of 10 mA cm⁻² in 1.0 M KOH, the overpotential for OER is only 223 mV for NiFeCrS_x/NF. Additionally, the in situ grown of self-supporting nanoflower structure on NiFe-LDH not only provides a large catalytic surface area but also facilitates electrolyte penetration during the catalytic process, endowing NiFeCrS_x/NF with high long-term stability. When used as a bifunctional catalyst for overall water splitting, the NiFeCrS_x/NF||NiFeCrS_x/NF electrolyzer requires only 1.29 V to deliver a current density of 10 mA cm⁻². Simultaneously, Cr doping protects the Fe sites by maintaining stable valence states, ensuring high performance and stability of NiFeCrS_x/NF, even when it is utilized for seawater splitting. This strategy offers novel concepts for creating catalysts based on non-precious metals that can be utilized in various application scenarios.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"680 ","pages":"Pages 1079-1089"},"PeriodicalIF":9.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142646702","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}

{"title":"Enhanced photoelectric desalination of Co3O4@NC/BiVO4 photoanode via in-situ construction of hole transport layer","authors":"Jianrong Li ,&nbsp;Shengbo Yuan ,&nbsp;Xueling Zhang ,&nbsp;Fuming Chen ,&nbsp;Yang Yang ,&nbsp;Jian Kang ,&nbsp;Yan He ,&nbsp;Jinlong Han ,&nbsp;Xiaoman Li ,&nbsp;Yongqing Yang ,&nbsp;Min Luo","doi":"10.1016/j.jcis.2024.11.081","DOIUrl":"10.1016/j.jcis.2024.11.081","url":null,"abstract":"<div><div>The solar-driven photoelectrochemical desalination (SD-PED) technology, as a new emerging desalination technique, has been developed and attracted the increasing attention. However, practical application remains hampered by several constraints, including the rapid deterioration of photocurrent, and the long-term stability of system. In this research, MOF-derived nitrogen-doped carbon@Co₃O₄/BVO (Co₃O₄@NC/BVO) heterostructured photoanode was design for efficient and durable solar driven redox desalination. It exhibits an initial photocurrent of 2.40 mA/cm² and a desalination rate of 69.01 μg/(cm²·min) in the zero-bias state using the light as the driving force, without consuming electrical energy. Furthermore, the solar energy consumption of the photoanode is 0.187 μmol/J. The salt removal rate fluctuates within 1.36 μg/(cm²·min) throughout five cycles without any substantial decrease. Photo-luminescence, EIS and Mott-Schottky analysis are also performed to investigate interface reaction, charge separation and transfer mechanism between photoanode and electrolyte. The analysis of the charge-transfer paths on the heterojunction interface is conducted through in situ irradiation XPS. Further analysis of the generation and separation of •OH and h⁺ in the Co₃O₄@NC/BVO photoanode using electron paramagnetic resonance (EPR) showed that Co₃O₄@NC as an efficient hole transfer layer can effectively promote the separation and transfer of photo-generated electrons and holes. The excellent desalination performance is attributed to the synergistic effect of electron transfer in the Co₃O₄@NC/BVO heterojunction and hole transport in the Co₃O₄@NC efficient hole transport layer. This work is significant for the development of solar redox flow desalination.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"680 ","pages":"Pages 11-23"},"PeriodicalIF":9.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645958","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}