ChemNanoMat最新文献_第4页

Rice Straw Biochar as an Effective Support for Pd Nanoparticles for Ethanol Electro-Oxidation Reaction in Alkaline Condition 稻草生物炭作为钯纳米颗粒在烷烃条件下乙醇电氧化反应中的有效支持物

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-09-10 DOI: 10.1002/cnma.202400288

Matthew L. Villanueva, Justienne Rei P. Laxamana, Hannah Grace G. Necesito, Jonyl L. Garcia, Prof. Bernard John V. Tongol

{"title":"Rice Straw Biochar as an Effective Support for Pd Nanoparticles for Ethanol Electro-Oxidation Reaction in Alkaline Condition","authors":"Matthew L. Villanueva, Justienne Rei P. Laxamana, Hannah Grace G. Necesito, Jonyl L. Garcia, Prof. Bernard John V. Tongol","doi":"10.1002/cnma.202400288","DOIUrl":"10.1002/cnma.202400288","url":null,"abstract":"Herein, we report the utilization of biochar derived from rice straw (RSB) as an effective support matrix for Pd nanoparticles and its application as an electrocatalyst for ethanol electro-oxidation (EEO) in an alkaline medium. Rice straw, a common agricultural byproduct, was pyrolyzed at 600 °C, 700 °C, and 800 °C under N2 atmosphere. Pd was loaded onto the RSB via borohydride reduction of Pd2+, with a nominal loading of 20 % Pd. Spectroscopic and morphological characterization revealed the formation of dispersed Pd nanoparticles on the RSB surface. Pyrolysis temperature was observed to influence both the porosity of the resulting RSB and the dispersion and degree of exposure of Pd nanoparticles deposited on the surface. Electrochemical characterization revealed that Pd/RSB could be a potential EEO electrocatalyst for direct ethanol fuel cell applications. Pd/RSB-700 exhibited better performance in terms of EEO forward mass activity (jf) and forward and backward mass activity (jf/jb) ratio relative to Pd/RSB-600 and Pd/RSB-800. Moreover, Pd/RSB was shown to be superior to commercial Pd on carbon black in terms of electrochemical stability. This study opens the potential of rice straw biochar as a sustainable and environmentally friendly carbon-based support matrix for Pd-based EEO electrocatalysts.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 12","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabrication of ripple structured silicon carbide (SiC) films for nano‐grating and solar cell applications 制作用于纳米光栅和太阳能电池的波纹结构碳化硅 (SiC) 薄膜

IF 3.8 4区材料科学

ChemNanoMat Pub Date : 2024-09-10 DOI: 10.1002/cnma.202400455

Gupta Divya, Kalpana Chhoker, Usha Rani, Amena Salim, Rahul Singhal, Vishal Sharma, Sanjeev Aggarwal

{"title":"Fabrication of ripple structured silicon carbide (SiC) films for nano‐grating and solar cell applications","authors":"Gupta Divya, Kalpana Chhoker, Usha Rani, Amena Salim, Rahul Singhal, Vishal Sharma, Sanjeev Aggarwal","doi":"10.1002/cnma.202400455","DOIUrl":"https://doi.org/10.1002/cnma.202400455","url":null,"abstract":"In the present study, we aim to investigate the self‐organization of unexplored silicon carbide (SiC) film surfaces under 30 keV oblique Ar+ ions irradiation and hence unprecedented tailoring of optical and electrical characteristics with view of their uses in solar cells, gratings and nano‐ to micro‐scale devices. The surface morphology mainly consisted of triangular shaped nanoparticles which evolves into nanoscale ripple structures with an alignment parallel to the projection of ion beam direction. For the first time, we have demonstrated the fabrication of highly‐ordered ripple patterns with wavelength in visible region over SiC films and applicable as nano‐gratings. The underlying mechanism relies on the structural rearrangement due to transition of film microstructure from amorphous to mixed phase (crystalline, nano‐crystalline and amorphous) and lowering of C=C and C‐C vibration modes by the heavier Si atoms. These nanostructured silicon carbide film shows unparalleled optical (energy gap decreases from 4.60±0.4 eV to 3.16±0.2 eV) & electrical characteristics (conductivity increases from 6.6x10‐11 to 1.12x10‐3 S/m with linear I‐V behavior). Thus, we propose that ripple structured SiC films with wide band gap, high refractive index and high electrical conductivity with ohmic behaviour are promising candidates for application as window layer in solar cells and opto‐electronics.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"28 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Front Cover: Superhydrophilic Densely-Packed Gecko-Like Structures by Soft-Template Electropolymerization (ChemNanoMat 9/2024) 封面：通过软模板电聚合形成的超亲水致密壁虎状结构（ChemNanoMat 9/2024）

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-09-09 DOI: 10.1002/cnma.202480901

Pape Diene Dione, Prof. Alioune Diouf, Dr. Abdoulaye Dramé, Dr. François Orange, Prof. Frédéric Guittard, Dr. Thierry Darmanin

引用次数: 0

The Influence of Halogen Anions on the Color/Fluorescence Dual-Switching Behaviors of 1,10-Phenanthroline-Based Viologen Derivatives 卤素阴离子对 1,10-菲罗啉基 Viologen 衍生物颜色/荧光双切换行为的影响

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-09-09 DOI: 10.1002/cnma.202400418

Dr. Yanling Zhuang, Qidong Zhang, Xiaquan Lin

{"title":"The Influence of Halogen Anions on the Color/Fluorescence Dual-Switching Behaviors of 1,10-Phenanthroline-Based Viologen Derivatives","authors":"Dr. Yanling Zhuang, Qidong Zhang, Xiaquan Lin","doi":"10.1002/cnma.202400418","DOIUrl":"10.1002/cnma.202400418","url":null,"abstract":"Stimuli-responsive color/fluorescence dual-switchable materials have garnered significant attention in displays, sensors, and anti-counterfeiting. However, current material systems are hampered by the single stimulus-response and unregulated fluorescence. Viologen derivatives featuring fluorophore as N-substituent and halogen anions as counteranions not only exhibit responsiveness to both electric and light stimuli but also enable adjustable emission. In this work, we explored the influence of halogen anions on the color/fluorescence dual-switching behaviors of 1,10-phenanthroline-based viologen derivatives. The energy level gaps for phen-Vio[2Cl−] (2.93 eV), phen-Vio[2Br−] (2.67 eV), and phen-Vio[2I−] (2.34 eV) decreased with the decrease of electron affinity of halogen anions (Cl−>Br−>I−), which leads to a sequential improvement in their electrochromic/electrofluorochromic and photochromic/photofluorochromic properties. This work has important guidance for the design and development of smart materials and their optoelectronic devices.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 12","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polyoxometalate derived materials as laccase‐mimic nanozyme and reduction catalyst for p‐nitrophenol remediation in water 聚氧化金属酸盐衍生材料作为模仿漆酶的纳米酶和对硝基苯酚水污染修复还原催化剂

IF 3.8 4区材料科学

ChemNanoMat Pub Date : 2024-09-09 DOI: 10.1002/cnma.202400336

Ping Sun, Xinxin Xu, Jin Chen

{"title":"Polyoxometalate derived materials as laccase‐mimic nanozyme and reduction catalyst for p‐nitrophenol remediation in water","authors":"Ping Sun, Xinxin Xu, Jin Chen","doi":"10.1002/cnma.202400336","DOIUrl":"https://doi.org/10.1002/cnma.202400336","url":null,"abstract":"p‐Nitrophenol (PNP), a highly toxic water pollutant, poses significant risks to human health and the environment. For detecting PNP, a colorimetric method utilizing a nanozyme that mimics laccase activity presents a viable approach. In this study, PV14@MIL‐88A, a robust nanozyme with superior laccase‐mimic capabilities, was synthesized by incorporating Na7H2[PV14O42] (PV14) into MIL‐88A, a metal‐organic framework (MOF). This nanozyme demonstrates optimal laccase‐mimicking activity, enabling effective PNP detection via colorimetry and digital image colorimetry using smartphones. Theoretical analyses suggest that the outstanding laccase‐mimic activity of PV14@MIL‐88A is derived from the optimized d‐band center in PV14. Upon calcination with dicyandiamide (DCDA), PV14@MIL‐88A transforms into Fe2O3/VO2@NCNF. In the presence of NaBH4, Fe2O3/VO2@NCNF facilitates the conversion of PNP to p‐aminophenol (PAP), an essential precursor in paracetamol synthesis. The interaction between Fe2O3 and VO2 in Fe2O3/VO2@NCNF enhances adsorption and subsequent reduction of PNP. The saturation magnetization of Fe2O3/VO2@NCNF reaches 25 emu·g‐1, which supports efficient magnetic separation in the reduction process. This study not only advances an effective method for PNP detection but also facilitates its transformation from a hazardous pollutant into a valuable chemical precursor.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"6 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Oxygen-Self-Produced Nanoplatform Based on MnO2 for Relieving Hypoxia 基于二氧化锰的自产氧纳米平台用于缓解缺氧症状

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-09-08 DOI: 10.1002/cnma.202400157

Guohua Pan, Hanxiao Bao, Jinguo Zhang, Jue Hou, Jun Zhou, Hongzhen Bai, Guping Tang

{"title":"An Oxygen-Self-Produced Nanoplatform Based on MnO2 for Relieving Hypoxia","authors":"Guohua Pan, Hanxiao Bao, Jinguo Zhang, Jue Hou, Jun Zhou, Hongzhen Bai, Guping Tang","doi":"10.1002/cnma.202400157","DOIUrl":"10.1002/cnma.202400157","url":null,"abstract":"Manganese dioxide (MnO2) nanoparticles are increasingly recognized for their potential in biomedical applications, particularly in the realm of hypoxic cancer therapy, due to their unique physicochemical characteristics. This investigation introduces a novel, template-free synthesis strategy. The reducing groups inherent in bovine serum albumin (BSA) facilitate a redox reaction with potassium permanganate (KMnO4), while the abundance of functional groups in BSA is instrumental in the formation of MnO2. The transmission electron microscopy (TEM) analysis has characterized the synthesized MnO2 nanoparticles, termed BM NPs, as spherical particles with a mean diameter of 210 nm and zeta potential of −40.1 mV measured by dynamic light scattering (DLS). The Fourier transform infrared (FT-IR) spectrum of BM NPs exhibits the characteristic peak of MnO2 at 1113 cm−1 and 620 cm−1. Furthermore, the elemental composition of BM NPs has been ascertained through energy-dispersive X-ray (EDX) elemental mapping analysis. Though concentration of BM NPs up to 200 μg/mL, the survival rate of 4T1 cells remained approximately 75 %. Given that BM NPs at a concentration of 100 μg/mL significantly alleviate cellular hypoxia, the high oxygen-generating capacity of these nanoparticles is proved, suggesting their suitability as a drug delivery system, especially in the context of hypoxic tumor microenvironments.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 12","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rifampicin-Loaded Nano-in-Microparticles (Trojan Particles) as a Pulmonary Delivery System for Tuberculosis Treatment 作为肺部给药系统治疗肺结核的利福平纳米微粒（特洛伊微粒

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-09-07 DOI: 10.1002/cnma.202400296

Dinh-Duy Pham, Van-Thin Luong, Truc Thanh Ngoc Huynh, Duyen Thi My Huynh, Duy Toan Pham

{"title":"Rifampicin-Loaded Nano-in-Microparticles (Trojan Particles) as a Pulmonary Delivery System for Tuberculosis Treatment","authors":"Dinh-Duy Pham, Van-Thin Luong, Truc Thanh Ngoc Huynh, Duyen Thi My Huynh, Duy Toan Pham","doi":"10.1002/cnma.202400296","DOIUrl":"10.1002/cnma.202400296","url":null,"abstract":"The oral rifampicin (RIF) dosage forms possess various side effects and limited efficacy for tuberculosis treatment. Thus, this work developed the nano-in-microparticles containing RIF (trojan nRIF) as a novel pulmonary delivery system. The RIF-loaded nanoparticles (nRIF) were prepared by self-assembly polyelectrolyte complexation between lecithin and chitosan, whereas the trojan nRIF were formulated by spray-drying method of nRIF and mannitol/maltodextrin. The nRIF had a spherical shape with sizes of 86–126 nm, zeta potentials of 24–39 mV, entrapment efficiencies of 44–80 %, and drug loading capacities of 13–42 %. The RIF release from nRIF occurred in two stages, the initially rapid release stage and the controlled release stage upto 96 h, followed the Higuchi model. The trojan nRIF possessed the mass median aerodynamic diameter of 3.7–4.6 μm, fine particle fraction of 34–40 %, and alveolar fraction of 17–21 %. Compared to mannitol, maltodextrin was a superior carrier for nRIF, which yielded better aerodynamic properties and RIF was mainly stayed in the amorphous form. Moreover, using the scanning electron microscopy, the nano-in-microparticles were clearly observed with hollow structure. Finally, the trojan nRIF could preserve the physical properties of the encapsulated nRIF. In summary, the trojan nRIF could become a potential inhalation anti-tuberculosis product.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 12","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Molecular Aggregation to and from Disaggregation of an Organic Emitter for Strategic Emission Modulation 有机发射器的分子聚合与分解，实现战略性发射调制

IF 3.8 4区材料科学

ChemNanoMat Pub Date : 2024-09-07 DOI: 10.1002/cnma.202400474

Arabinda Mallick, Provakar Paul, Saikat Samanta, Arunavo Chatterjee, Bibhas Mondal, Ujjal Kanti Roy, Tapas Majumdar

{"title":"Molecular Aggregation to and from Disaggregation of an Organic Emitter for Strategic Emission Modulation","authors":"Arabinda Mallick, Provakar Paul, Saikat Samanta, Arunavo Chatterjee, Bibhas Mondal, Ujjal Kanti Roy, Tapas Majumdar","doi":"10.1002/cnma.202400474","DOIUrl":"https://doi.org/10.1002/cnma.202400474","url":null,"abstract":"“Aggregation‐caused fluorescence quenching” is a well‐established phenomenon by now. The procedure from aggregation to disaggregation usually causes a revival of emission signals, and thus affords an interesting new path to design “turn‐on” optical probes. For this purpose, the photophysics, energetics and dynamics of supra‐molecular encapsulation induced disaggregation of a self‐assembled bis‐indole derivative, 3,3’‐bisindolyl(phenyl)methane (BIPM), and its further reaggregation are reported herein. Compared to disaggregation strategies, its reverse process, reaggregation, has received much less attention so far. The gamma‐cyclodextrin (γ‐CD) molecules were found to be effective in disaggregating the BIPM associations and emission enhancement, whereas, the incorporation of guanidine hydrochloride (Gnd‐HCl) into the aqueous solution of disaggregated BIPM monomers in γ‐CD environment resulted in probe reaggregation leading to quenching of the restored emission. Here, γ‐CD and Gnd‐HCl can be considered as the molecular modulators of BIPM fluorescence based on the disaggregation–reaggregation mechanisms. The spectroscopic and thermodynamic findings associated with the disaggregation‐reaggregation processes might be insightful in reversible controlling of molecular aggregation and the associated optical properties for diverse applications.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"83 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Single Source Precursor Path to 2D Materials: A Case Study of Solution-Processed Molybdenum-Rich MoSe2-x Ultrathin Nanosheets 通向二维材料的单源前驱体之路：溶液加工富钼 MoSe2-x 超薄纳米片的案例研究

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-09-06 DOI: 10.1002/cnma.202400357

Shashank Mishra, Erwann Jeanneau, Sweta Gahlot, Nidal Raydan, Laurence Burel, Thibault Cornier, Anne Bonhomme, Pascal Bargiela

{"title":"Single Source Precursor Path to 2D Materials: A Case Study of Solution-Processed Molybdenum-Rich MoSe2-x Ultrathin Nanosheets","authors":"Shashank Mishra, Erwann Jeanneau, Sweta Gahlot, Nidal Raydan, Laurence Burel, Thibault Cornier, Anne Bonhomme, Pascal Bargiela","doi":"10.1002/cnma.202400357","DOIUrl":"10.1002/cnma.202400357","url":null,"abstract":"Two-dimensional Molybdenum diselenide is a versatile and promising material used for a wide range of applications and its synthesis in high quality and yield is currently the subject of intense research. Low temperature solution phase synthesis of nanomaterials using designed molecular precursors enjoys tremendous advantages over traditional high-temperature solid-state synthesis. However, molecular precursor chemistry of molybdenum selenide nanomaterials is almost non-existent. We report here synthesis and structural characterization of new molybdenum molecular precursors with selenoether and selenourea ligands, which due to their easy synthesis, desired Mo/Se composition and moderate processing properties, are highly promising as single source precursors for the scale-up production of 2D molybdenum diselenide materials. This is demonstrated by the solution-phase decomposition of the Mo-selenourea precursor which produced Mo-rich MoSe2-x ultrathin nanosheets (NSs) in good yield. These NSs were characterized by Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES), Powder X-ray diffraction (XRD), Raman spectroscopy, Fourier Transform Infrared Spectroscopy (FT-IR), Thermogravimetric analysis (TGA), Transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) studies.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 11","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bifunctional Electrocatalyst Enhanced Synergistically by MoS2/Ni3S2 Heterojunctions and Au Nanoparticles for Large-Current-Density Overall Water Splitting 通过 MoS2/Ni3S2 异质结和金纳米粒子协同增强的双功能电催化剂用于大电流密度整体水分离

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-09-02 DOI: 10.1002/cnma.202400430

Peizhi Liu, Dechuan Peng, Bin Zhang, Bing Hao, Yongqing Shen, Yanhui Song, Haojie Liang, Min Zhao, Haixia Zhang, Bingshe Xu, Junjie Guo

{"title":"Bifunctional Electrocatalyst Enhanced Synergistically by MoS2/Ni3S2 Heterojunctions and Au Nanoparticles for Large-Current-Density Overall Water Splitting","authors":"Peizhi Liu, Dechuan Peng, Bin Zhang, Bing Hao, Yongqing Shen, Yanhui Song, Haojie Liang, Min Zhao, Haixia Zhang, Bingshe Xu, Junjie Guo","doi":"10.1002/cnma.202400430","DOIUrl":"10.1002/cnma.202400430","url":null,"abstract":"Developing transition metal based overall water splitting (OWS) electrocatalysts with high efficiency, low-cost, large current density, and long-term stability is crucial for industrial electrolysis of water, but remains a major challenge. In this study, a hierarchical electrocatalyst with MoS2/Ni3S2 heterojunctions and a tiny amount of Au nanoparticles grown on nickel foam (MoS2/Ni3S2-Au@NF) has been developed by a one-step hydrothermal method. The heterojunctions and Au nanoparticle decoration induce the electron-rich interfaces in the catalyst, which facilitate the synergistic adsorption of both OER and HER intermediates. As a result, MoS2/Ni3S2-Au@NF possesses an excellent bifunctional electrocatalytic performance in 1 M KOH with low HER overpotential (78 mV@10 mA cm−2, 253 mV@500 mA cm−2), low OER overpotential (261 mV@50 mA cm−2, 435 mV@500 mA cm−2), and outstanding cyclical stability and continuous stability, which are superior than typical benchmarks of Pt/C and RuO2. An electrolyzer assembled with the self-supported MoS2/Ni3S2-Au@NF electrode also displays excellent OWS activity and stability with a current density beyond 100 mA cm−2. This experiment is responding a potential alternative non-precious metal electrocatalyst for OWS at industrial settings, and thus promotes the real-world application of hydrogen energy conversions.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 11","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142210757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0