Journal ArticleDOI
Mo doping and Se vacancy engineering for boosting electrocatalytic water oxidation by regulating the electronic structure of self-supported Co9Se8@NiSe.
Lin Tian,Zhenyang Chen,Ting-Yu Wang,M. Cao,Xinhua Lu,W. H. Cheng,Changchun He,Ju Wang,Zhao Li +8 more
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In this paper , a facile H2O2-assisted etching method is proposed for the fabrication of Mo-doped ultrathin Co9Se8@NiSe/NF-X heterojunctions with rich Se vacancies to boost electrocatalytic water oxidation.Abstract:
Oxygen evolution reactions (OERs) are regarded as the rate-determining step of electrocatalytic overall water splitting, which endow OER electrocatalysts with the advantages of high activity, low cost, good conductivity, and excellent stability. Herein, a facile H2O2-assisted etching method is proposed for the fabrication of Mo-doped ultrathin Co9Se8@NiSe/NF-X heterojunctions with rich Se vacancies to boost electrocatalytic water oxidation. After step-by-step electronic structure modulation by Mo doping and Se vacancy engineering, the self-standing Mo-Co9Se8@NiSe/NF-60 heterojunctions deliver a current density of 50 mA cm-2 with an overpotential of 343 mV and a cell voltage of only 1.87 V at 50 mA cm-2 for overall water splitting in 1.0 M KOH. Our study opens up the possibility of realizing step-by-step electronic structure modulation of nonprecious OER electrocatalysts via heteroatom doping and vacancy engineering.read more
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Nitrogen-doped Fe2O3/NiTe2 as an excellent bifunctional electrocatalyst for overall water splitting.
TL;DR: In this paper , an efficient porous nanoblock catalyst N-doped Fe2O3/NiTe2 heterojunction for overall water splitting is reported, which achieves a current density of 10 mA cm−2 under 1.54 V with good durability.
Journal ArticleDOI
Plasmon-Mediated Oxidase-like Activity on Ag@ZnS Heterostructured Hollow Nanowires for Rapid Visual Detection of Nitrite.
Lin Tian,Zijun Huang,Xinhua Lu,Ting-ting Wang,W. H. Cheng,Huimin Yang,Tian-zi Huang,Tongxiang Li,Zhao Li +8 more
TL;DR: In this article , a visual NO2- sensing platform with outstanding selectivity, sensitivity, and stability based on a surface plasmon resonance (SPR)-enhanced oxidase-like activity has been proposed.
Journal ArticleDOI
Dual-Cation Doping Precisely Reducing Energy Barrier of Rate-Determining Step for Promoting Oxygen-Evolving Activity
TL;DR: The energy barrier for the rate-determining step (RDS) is exceptionally critical for the catalytic oxygen evolution reaction (OER) efficiency of an electrocatalyst as discussed by the authors .
Journal ArticleDOI
Interfacial built-in electric-field for boosting energy conversion electrocatalysis.
Hui-Lin Xu,Junru Li,Xianxu Chu +2 more
TL;DR: In this article , a critical review regarding the concept, modulation strategies, and applications of BIEFs is comprehensively summarized, which begins with the fundamental concepts, together with the advantages of the BIEF for boosting electrocatalytic reactions.
Journal ArticleDOI
Strategies for Promoting Catalytic Performance of Ru‐Based Electrocatalysts towards Oxygen/Hydrogen Evolution Reaction
TL;DR: In this article , a review focusing on the engineering strategies toward the substantial improvement in electrocatalytic OER and HER performance of Ru-based catalysts, including geometric structure, interface, phase, electronic structure, size, and multicomponent engineering, is presented.
References
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Journal ArticleDOI
Oxygen Vacancies Dominated NiS2/CoS2 Interface Porous Nanowires for Portable Zn–Air Batteries Driven Water Splitting Devices
Jie Yin,Yuxuan Li,Fan Lv,Min Lu,Ke Sun,Wei Wang,Lei Wang,Fangyi Cheng,Yefei Li,Pinxian Xi,Shaojun Guo +10 more
TL;DR: A new way for designing oxygen vacancies dominated interface nanowires as highly efficient multifunctional electrocatalysts for electrochemical reactions and renewable energy devices is opened.
Journal ArticleDOI
Single-Atom Vacancy Defect to Trigger High-Efficiency Hydrogen Evolution of MoS2
Xin Wang,Yuwei Zhang,Haonan Si,Qinghua Zhang,Jing Wu,Gao Li,Xiaofu Wei,Yu Sun,Qingliang Liao,Zheng Zhang,Kausar Ammarah,Lin Gu,Zhuo Kang,Yue Zhang +13 more
TL;DR: Bridging the gap, to some extent, between precise design from theory and practical modulation in experiments, the proposed strategy extends defect engineering to a more sophisticated level for further unlocking the potential of catalytic performance enhancement.
Journal ArticleDOI
Modulating electronic structure of metal-organic frameworks by introducing atomically dispersed Ru for efficient hydrogen evolution.
Yamei Sun,Ziqian Xue,Qinglin Liu,Yaling Jia,Yinle Li,Kang Liu,Yiyang Lin,Min Liu,Guangqin Li,Cheng-Yong Su +9 more
TL;DR: In this article, a single-atom strategy was used to construct excellent metal-organic frameworks (MOFs) hydrogen evolution reaction electrocatalyst (NiRu0.13-BDC) by introducing atomically dispersed Ru.
Journal ArticleDOI
Iridium Single Atoms Coupling with Oxygen Vacancies Boosts Oxygen Evolution Reaction in Acid Media
Jie Yin,Jing Jin,Min Lu,Bolong Huang,Hong Zhang,Peng Yong,Pinxian Xi,Chun-Hua Yan,Chun-Hua Yan +8 more
TL;DR: Density functional theory (DFT) calculations reveal that the prominent OER performance arises from the surface electronic exchange-and-transfer activ-ities contributed by atomic Ir incorporation on the intrinsic VO existed NiCo2O4 surface.
Journal ArticleDOI
Interfacial Electronic Structure Modulation of NiTe Nanoarrays with NiS Nanodots Facilitates Electrocatalytic Oxygen Evolution.
Ziqian Xue,Xia Li,Qinglin Liu,Mengke Cai,Kang Liu,Min Liu,Zhuofeng Ke,Xialin Liu,Guangqin Li +8 more
TL;DR: The calculated and experimental results reveal that the strong electron interaction on nanointerfaces induces electronic structure modulation, which optimizes the binding energy of *OOH intermediates, thus improving the OER performance.