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CeO_(2) nanoparticles with oxygen vacancies decorated N-doped carbon nanorods:A highly efficient catalyst for nitrate electroreduction to ammonia

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Nano Research 2022年第10期15卷 8914-8921页

作者： Zerong Li Zhiqin Deng Ling Ouyang Xiaoya Fan Longcheng Zhang Shengjun Sun Qian Liu Abdulmohsen Ali Alshehri yonglan luo Qingquan Kong Xuping Sun Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province School of Chemistry and Chemical engineeringChina West Normal UniversityNanchong 637002China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Institute for Advanced Study Chengdu UniversityChengdu 610106China Chemistry Department Faculty of ScienceKing Abdulaziz UniversityP.O.Box 80203Jeddah 21589Saudi Arabia College of Chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJinan 250014China

Electrocatalytic nitrate reduction reaction(NO_(3)−RR)emerges as a highly efficient approach toward ammonia synthesis and degrading NO_(3)−*** our study,CeO_(2) nanoparticles with oxygen vacancies(VO)decorated N-doped carbon nanorods on graphite paper(CeO_(2)−x@NC/GP)were demonstrated as a highly efficient NO_(3)−RR *** CeO_(2)−x@NC/GP catalyst manifests a significant NH_(3 )yield up to 712.75μmol·h^(−1)·cm^(−2) at−0.8 V *** hydrogen electrode(RHE)and remarkable Faradaic efficiency of 92.93%at−0.5 V *** under alkaline conditions,with excellent ***,an assembled Zn-NO_(3)−battery with CeO_(2)−x@NC/GP as cathode accomplishes a high-power density of 3.44 mW·cm^(−2) and a large NH3 yield of 145.08μmol·h^(−1)·cm^(−2).Density functional theory results further expose the NO_(3)−reduction mechanism on CeO_(2)(111)surface with VO.

关键词： CeO_(2)−x nanoparticles oxygen vacancies electrochemical NO_(3)−reduction ammonia synthesis electrocatalysis

ITO@TiO_(2)nanoarray:An efficient and robust nitrite reduction reaction electrocatalyst toward NH_(3)production under ambient conditions

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eScience 2022年第4期2卷 382-388页

作者： Shaoxiong Li Jie Liang Peipei Wei Qian Liu Lisi Xie yonglan luo Xuping Sun Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province School of Chemistry and Chemical EngineeringChina West Normal UniversityNanchong637002SichuanChina Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu610054SichuanChina Institute for Advanced Study Chengdu UniversityChengdu610106SichuanChina

Ambient electrochemical nitrite(NO_(2)^(-))reduction is viewed as an effective and sustainable approach for simul-taneously removing NO_(2)^(-)and producing ammonia(NH_(3)).However,the complex multi-electron transfer steps involved in the NO_(2)^(-)reduction reaction(NO_(2)^(-)RR)lead to sluggish kinetics and low product selectivity toward NH_(3),underscoring the need for NH_(3)synthesis electrocatalysts with high activity and ***,we report amorphous indium-tin oxide sputtered on a TiO_(2)nanobelt array on a Ti plate(ITO@TiO_(2)/TP)as a 3D NH_(3)-producing catalyst for the NO_(2)^(-).In 0.5 M LiClO_(4)with 0.1 M NO_(2)^(-),it shows greatly boosted NO_(2)^(-)RR activity toward NH_(3)production,with excellent selectivity,achieving a large NH_(3)yield of 411.3μmol h^(-1)cm^(-2)and a high Faradaic efficiency of 82.6%.It also shows high durability for continuous electrolysis.A Zn-NO_(2)^(-)battery with ITO@TiO_(2)/TP cathode offers an NH_(3)yield of 23.1μmol h^(-1)cm^(-2)and a peak power density of 1.22 m.

关键词： ITO Electrocatalysis Magnetron sputtering Nitrite reduction reaction NH_(3)electrosynthesis

Cu_(2)Sb decorated Cu nanowire arrays for selective electrocatalytic CO_(2)to CO conversion

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Nano Research 2021年第8期14卷 2831-2836页

作者： Shiyong Mou Yonghao Li Luchao Yue Jie Liang yonglan luo Qian Liu Tingshuai Li Siyu Lu Abdullah M.Asiri Xiaoli Xiong Dongwei Ma Xuping Sun College of Chemistry and Materials Science Sichuan Normal UniversityChengdu 610068China Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province School of Chemistry and Chemical engineeringChina West Normal UniversityNanchong 637002China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Green Catalysis Center and College of ChemistryZhengzhou UniversityZhengzhou 450001China Chemistry Department Faculty of Science&Center of Excellence for Advanced Materials ResearchKing Abdulaziz UniversityP.O.Box 80203Jeddah 21589Saudi Arabia Key Laboratory for Special Functional Materials of Ministry of Education and School of Materials Science and Engineering Henan UniversityKaifeng 475004China

The advancement of cost-effective and selective electrocatalyst towards CO_(2) to CO conversion is crucial for renewable energy conversion and storage,thus to achieve carbon-neutral cycle in a sustainable *** this communication,we report that CujSb decorated Cu nanowire arrays on Cu foil act as a highly active and selective electrocatalyst for CO_(2) to CO *** CO_(2)-saturated 0.1 M KHCO_(3),it achieves a high Faraday efficiency(FE)of 86.5%for CO,at-0.90 V *** hydrogen electrode(RHE).The H_(2)/CO ratio is tunable from 0.08:1 to 5.9:1 by adjusting the *** is worth noting that HCOO-product was totally suppressed on such catalyst,compared with Sb *** improving selectivity for CO could be attributed to the bimetallic effect and nanowire arrays structure.

关键词： Cu_(2)Sb nanowire arrays electrochemical CO_(2)reduction CO_(2)to CO conversion

FeOOH quantum dots decorated graphene sheet:An efficient electrocatalyst for ambient N2 reduction

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Nano Research 2020年第1期13卷 209-214页

作者： Xiaojuan Zhu Jinxiu Zhao Lei Ji Tongwei Wu Ting Wang Shuyan Gao Abdulmohsen Ali Alshehri Khalid Ahmed Alzahrani yonglan luo Yimo Xiang Baozhan Zheng Xuping Sun Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu610054China Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province College of Chemistry and Chemical EngineeringChina West Normal UniversityNanchong637002China School of Materials Science and Engineering Henan Normal UniversityXinxiang453007China Chemistry Department Faculty of ScienceKing Abdulaziz UniversityP.O.Box 80203Jeddah21589Saudi Arabia No.12 Middle School Chengdu610041China College of Chemistry Sichuan UniversityChengdu610064China

Electrochemical N2 reduction offers a promising alternative to the Haber-Bosch process for sustainable NH3 synthesis at ambient conditions,but it needs efficient catalysts for the N2 reduction reaction(NRR).Here,we report that FeOOH quantum dots decorated graphene sheet acts as a superior catalyst toward enhanced electrocatalytic N2 reduction to NH3 under ambient *** 0.1 M LiClO4,this hybrid attains a large NH3 yield rate and a high Faradaic efficiency of 27.3µg·h^−1·mg−*** 14.6%at−0.4 V *** hydrogen electrode,respectively,rivalling the current efficiency of all Fe-based NRR electrocatalysts in aqueous *** also shows strong durability during the electrolytic process.

关键词： FeOOH quantum dots decorated graphene sheet N2 reduction reaction NH3 electrosynthesis ambient conditions

Improving the intrinsic electronic conductivity of NiMo0_(4) anodes by phosphorous doping for high lithium storage

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Nano Research 2022年第1期15卷 186-194页

作者： Luchao Yue Chaoqun Ma Shihai Yan Zhenguo Wu Wenxi Zhao Qian Liu(ISl) yonglan luo Benhe Zhong Fang Zhang Yang Liu Abdulmohsen AN Alshehri Khalid Ahmed Alzahrani Xiaodong Guo Xuping Sun School of Chemical Engineering Sichuan UniversityChengdu 610065China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural UniversityQingdao 266109China National Engineering Research Center for Nanotechnology No.28 East Jiang Chuan RoadShanghai 200241China School of Materials Science and Engineering Henan Normal UniversityXinxiang 453007China Chemistry Department Faculty of ScienceKing Abdulaziz UniversityP.O.Box 80203Jeddah 21589Saudi Arabia

Heteroatom doping is one of the most promising strategies toward regulating intrinsically sluggish electronic conductivity and kinetic reaction of transition metal oxides for enhancing their lithium ***,we designed phosphorus-doped NiMo0_(4) nanorods(P-NiMo0_(4))by using a facile hydrothermal method and subsequent low-temperature phosphorization *** doping played an indispensable role in significantly improving electronic conductivity and the Li+diffusion kinetics of NiMo0_(4) *** investigation and density functional theory calculation demonstrated that phosphorus doping can expand the interplanar spacing and alter electronic structures of NiMo0_(4) ***,the introduced phosphorus dopant can generate some oxygen vacancies on the surface of NiMo0_(4),which can accelerate Li+diffusion kinetics and provide more active site for lithium *** excepted,P-NiMo0_(4) electrode delivered a high specific capacity(1,130 mA·g^(-1) at 100 mA·g^(-1) after 100 cycles),outstanding cycling durability(945 mA·g^(-1) at 500 mA·g^(-1) over 200 cycles),and impressive rate performance(640 mA·g^(-1)at 2,000mA·g^(-1))for lithium ion batteries(LIBs).This work could provide a potential strategy for improving intrinsic conductivity of transition metal oxides as high-performance anodes for LIBs.

关键词： NiMo0_(4) phosphorus doping anode lithium ion batteries

Highly efficient two-electron electroreduction of oxygen into hydrogen peroxide over Cu-doped TiO_(2)

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Nano Research 2022年第5期15卷 3880-3885页

作者： Zhiqin Deng Li Li Yuchun Ren Chaoqun Ma Jie Liang Kai Dong Qian Liu yonglan luo Tingshuai Li Bo Tang Yang Liu Shuyan Gao Abdullah MAsiri Shihai Yan Xuping Sun Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural UniversityQingdao 266109China Institute for Advanced Study Chengdu UniversityChengdu 610106China College of Chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJinan 250014China School of Materials Science and Engineering Henan Normal UniversityXinxiang 453007China Chemistry Department Faculty of Science&Center of Excellence for Advanced Materials ResearchKing Abdulaziz UniversityP.O.Box 80203Jeddah 21589Saudi Arabia

Electrosynthesis of hydrogen peroxide(H2O_(2)),as a sustainable alternative to the anthraquinone oxidation method,provides the feasibility of directly generating H_(2)O_(2).Here,we report Cu-doped TiO_(2) as an efficient electrocatalyst which exhibits the excellent two-electron oxygen reduction reaction(2e-ORR)performance with respect to the pristine TiO_(2).The Cu doping results in the distortion of TiO_(2) lattice and further forms a large number of oxygen vacancies and Ti^(3+).Such Cu-doped TiO_(2) exhibits a positive onset potential about 0.79 V and high H_(2)O_(2) selectivity about 91.2%.Moreover,it also shows a larger H_(2)O_(2) yield and good *** functional theory(DFT)calculations reveal that Cu dopant not only improves the electrical conductivity of pristine TiO_(2) but reduces the*OOH adsorption energy of active sites,which is beneficial to promote subsequently 2e-ORR process.

关键词： Cu-doped TiO_(2) oxygen vacancy Ti^(3+) two-electron oxygen reduction reaction hydrogen peroxide

Fe-doped Co_(3)O_(4) nanowire strutted 3D pinewood-derived carbon: A highly selective electrocatalyst for ammonia production via nitrate reduction

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Nano Research 2024年第4期17卷 2276-2282页

作者： Xuwei Liu Chaozhen Liu Xun He Zhengwei Cai Kai Dong Jun Li Xiaoya Fan Ting Xie Xiya Yang yonglan luo Dongdong Zheng Shengjun Sun Sulaiman Alfaifi Feng Gong Xuping Sun Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing 211189China College of Chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJinan 250014China Chemistry Department Frontier of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia

Nitrate(NO_(3)^(-)),a nitrogen-containing pollutant,is prevalent in aqueous solutions,contributing to a range of environmental and health-related *** electrocatalytic reduction of NO_(3)^(-)holds promise as a sustainable approach to both eliminating NO_(3)^(-)and generating valuable ammonia(NH_(3)).Nevertheless,the reduction reaction of NO_(3)^(-)(NO_(3)^(-)RR),involving 8-electron transfer process,is intricate,necessitating highly efficient electrocatalysts to facilitate the conversion of NO_(3)^(-)to NH_(3).In this study,Fe-doped Co_(3)O_(4) nanowire strutted three-dimensional(3D)pinewood-derived carbon(Fe-Co_(3)O_(4)/PC)is proposed as a high-efficiency NO_(3)^(-)RR electrocatalyst for NH_(3) *** within 0.1 M NaOH containing NO_(3)^(-),Fe-Co_(3)O_(4)/PC demonstrates exceptional performance,obtain an impressively large NH_(3) yield of 0.55 mmol·h^(-1)·cm^(-2) and an exceptionally high Faradaic efficiency of 96.5%at-0.5 V,superior to its Co_(3)O_(4)/PC counterpart(0.2 mmol·h^(-1)·cm^(-2),73.3%).Furthermore,the study delves into the reaction mechanism of Fe-Co_(3)O_(4) for NO_(3)^(-)RR through theoretical calculations.

关键词： Fe-doped Co_(3)O_(4) nanowire pinewood-derived carbon electrocatalytic NO_(3)-reduction NH_(3) synthesis density functional theory

CoFe-LDH nanowire arrays on graphite felt: A high-performance oxygen evolution electrocatalyst in alkaline media

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Chinese Chemical Letters 2022年第2期33卷 890-892页

作者： Biao Deng Jie Liang Luchao Yue Tingshuai Li Qian Liu Yang Liu Shuyan Gao Abdulmohsen Ali Alshehri Khalid Ahmed Alzahrani yonglan luo Xuping Sun Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province School of Chemistry and Chemical EngineeringChina West Normal UniversityNanchong 637002China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Institute for Advanced Study Chengdu UniversityChengdu 610106China School of Materials Science and Engineering Henan Normal UniversityXinxiang 453007China Chemistry Department Faculty of ScienceKing Abdulaziz UniversityP.O.Box 80203Jeddah 21589Saudi Arabia

Developing non-noble-metal oxygen evolution reaction(OER) electrocatalysts with high performance is critical to electrocatalytic water splitting. In this work, we fabricated Co Fe-layered double hydroxide(LDH) nanowire arrays on graphite felt(Co Fe-LDH/GF) via a hydrothermal method. The Co Fe-LDH/GF, as a robust integrated 3 D OER anode, exhibits excellent catalytic activity with the need of low overpotential of 252 and 285 mV to drive current densities of 10 and 100 mA/cm^(2) in 1.0 mol/L KOH, respectively. In addition, it also maintains electrochemical durability for at least 24 h. This work would open up avenues for the development of GF like attractive catalyst supports for oxygen evolution applications.

关键词： LDH Graphite felt Electrocatalyst Oxygen evolution Alkaline media

Enhancing electrocatalytic N_(2)-to-NH_(3) fixation by suppressing hydrogen evolution with alkylthiols modified Fe_(3)P nanoarrays

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Nano Research 2022年第2期15卷 1039-1046页

作者： Tong Xu Jie Liang Yuanyuan Wang Shaoxiong Li Zhaobai Du Tingshuai Li Qian Liu yonglan luo Fang Zhang Xifeng Shi Bo Tang Qingquan Kong Abdullah M.Asiri Chun Yang Dongwei Ma Xuping Sun Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China College of Chemistry and Materials Science Sichuan Normal UniversityChengdu 610068China Key Laboratory for Special Functional Materials of Ministry of Education and School of Materials Science and EngineeringHenan UniversityKaifeng 475004China Institute for Advanced Study Chengdu UniversityChengdu 610106China National Engineering Research Center for Nanotechnology No.28 East Jiang Chuan RoadShanghai 200241China College of Chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJinan 250014China Chemistry Department Faculty of Science&Center of Excellence for Advanced Materials ResearchKing Abdulaziz UniversityP.O.Box 80203Jeddah 21589Saudi Arabia

Electrocatalytic N_(2) reduction provides an attractive alternative to Haber-Bosch process for artificial NH_(3) *** difficulty of suppressing competing proton reduction,however,largely impedes its practical ***,we design a hydrophobic octadecanethiol-modified Fe_(3)P nanoarrays supported on carbon paper(C18@Fe_(3)P/CP)to effectively repel water,concentrate N_(2),and enhance N_(2)-to-NH_(3) *** catalyst achieves an NH_(3) yield of 1.80×10^(-10) mol s^(-1)·cm^(-2) and a high Faradaic efficiency of 11.22%in 0.1 M Na_(2)SO_(4),outperforming the non-modified Fe_(3)P/CP(2.16×10^(-11) mol s^(-1)·cm^(-2),0.9%)***,C18@Fe_(3)P/CP renders steady Nrfixing activlty/selectivity in cycling test and exhibits durability for at least 25 ***-principles calculations suggest that the surface electronic structure and chemical activity of Fe_(3)P can be well tuned by the thiol modification,which facilitates N_(2) electroreduction activity and catalytic formation of NH_(3).

关键词： Fe_(3)P nanoarrays octadecanethiol surface modification ambient N_(2)reduction first-principles calculation