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Controllable oxygen vacancies and morphology engineering:Ultra-high her/OER activity under base–acid conditions and outstanding antibacterial properties

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Journal of Energy Chemistry 2022年第8期31卷 639-651,I0017页

作者： Hongyao Xue Alan Meng Tongqing Yang Zhenjiang Li Chunjun Chen College of Electromechanical Engineering Qingdao University of Science and TechnologyQingdao 266061ShandongChina Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science MOECollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266061ShandongChina Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Colloid and Interface and ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences 2Beijing 100190China School of Chemistry and Chemical Engineering University of Chinese Academy of SciencesBejing 100049China

Introducing vacancy defects and unique morphology is an effective strategy to improve the catalytic performance of transition metal ***,precisely controlling the amount of vacancy defects remains ***,we propose a facile and efficient hydrothermal accompanying an annealing method to synthesize a series of Mn-doped CoO nanomaterials with controllable oxygen vacancies and unique *** oxygen vacancies amount can be precisely controlled by adjusting the Mndoping content and is positively correlated with catalytic *** was found that the oxygen vacancies amount can reach up to 38.2%over the Mn-doped CoO nanomaterials,resulting in ultra-high hydrogen evolution reaction(her)and oxygen evolution reaction(OER)catalytic activity(her:25.6 and 37 m V at 10 m A cm^(-2);OER:301 and 322 m V at 50 m A cm^(-2))under both basic and acidic conditions,while reaching 10 m A cm^(-2) for an ultra-low cell voltage of only 1.52 V,which exceeds that of Pt/C/RuO_(2) and all reported non-noble metal oxide *** DFT calculations reveal oxygen vacancies can optimize H*and HOO*intermediates adsorption free energy,thus improving the her and OER ***,the Mn-doped CoO with rich oxygen vacancies exhibits excellent antibacterial properties in vitro of *** work provides new ideas and methods for the rational design and precise control of vacancy defects in transition metal compounds and explores their potential application value in electrochemical water splitting and biomedical fields.

关键词： Oxygen vacancies Mn-doping her OER Antibacterial

Polyoxometalate derived p-n heterojunction for optimized reaction interface and improved her

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Chinese Chemical Letters 2023年第3期34卷 494-497页

作者： Xiaoli Cui Yunmeng Sun Xinxin Xu Department of Chemistry College of ScienceNortheastern UniversityShenyang 110819China Institute for Frontier Technologies of Low-Carbon Steelmaking Northeastern UniversityShenyang 110819China

MoS_(2) is a typical electrocatalyst for hydrogen evolution reaction(her),but the her activity is spoilt by intensive adsorption towards H^(*),which requires further *** n-type MoS_(2),the construction of p-n heterojunction with p-type MoO_(3) can reverse this situation,because inner electronic field in p-n heterojunction can facilitate H^(*) *** on this hypothesis,p-n heterojunction is built between MoS_(2) and MoO_(3) with polyoxometalate compound as *** obtained MoO_(3)/MoS_(2) exhibits excellent her activity,which only requires 68 mV to obtain 10 mA/cm^(2).With MoO_(3)/MoS_(2) as cathode material and Zn slice as anode,Zn-H^(+)battery is *** open circuit voltage achieves 1.11 V with short circuit current 151.4 mA/cm^(2).The peak power density of this Zn-H^(+) battery reaches 47.6 mW/cm^(2).When discharge at 10 mA/cm^(2),the specific capacity and energy density reach 728 mAh/g and 759 Wh/*** this process,H_(2) production rate of Zn-H^(+) battery achieves 364μmol/h with Faradic efficiency 97.8%.It realizes H_(2) production and electricity generation simultaneously.

关键词： Polyoxometalate p-n Heterojunction Electrocatalysis her Zn-H~+battery

Theoretical and experimental design of Pt-Co（OH）2 electrocatalyst for efficient her performance in alkaline solution

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Progress in Natural Science:Materials International 2019年第3期29卷 356-361页

作者： Haijun Wu Xiaoqing Zuo Shanpeng Wang Jun-Wen Yin Yan-Ning Zhang Jialin Chen School of Materials Science and Engineering Kunming University of Science and Technology State Key Laboratory of New Technologies for Comprehensive Utilization of Rare and Precious Metals Beijing Computational Science Research Center Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China

Design efficient electrocatalysts become significant for the hydrogen evolution reaction （her） in alkaline ***,the her performance on Pt-Co（OH）2 has been investigated by using DFT *** with pure Pt,the Pt-Co（OH）2 shows excellent hydrogen binding energy （-0.29 eV） and hydrogen adsorption free energy （0.02 eV）.More strikingly,the water dissociation process on Pt-Co（OH）2 is an exothermic reaction while that of Pt is an endothermic reaction,demonstrating that the Pt-Co（OH）2is an excellent catalyst for her in alkaline *** the two-step electrodepositions was used to fabricate Pt-Co（OH）2 on the carbon paper （CP）.The Pt-Co（OH）2/CP shows the lowest overpotential of only 37.6 mV at a current density of 10 mA cm-2in 0.1M KOH,the smallest Tafel slope of58 mV dec-1and the good stability for 20000s without obvious degradation.

关键词： OH Theoretical and experimental design of Pt-Co her electrocatalyst for efficient her performance in alkaline solution

Clinicopathologic significance of her-2/neu protein expression and gene amplification in gastric carcinoma

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World Journal of Gastroenterology 2011年第11期17卷 1501-1506页

作者： Shi-Yan Yan Ying Hu Jian-Gao Fan Guo-Quan Tao Yong-Ming Lu Xu Cai Bao-Hua Yu Yi-Qun Du Department of Gastroenterology Xinhua Hospital Shanghai Jiaotong University School of Medicine Shanghai 200092 China Department of General Surgery Huaian No.1 People's Hospital affiliated to Nanjing Medical University Huaian 223300 Jiangsu Province China Department of Pathology Cancer Hospital Fudan University Shanghai 200032 China Department of Pathology Institute of Traditional Chinese Medicine Nanjing 210029 Jiangsu Province China

AIM:To study the her-2/neu protein expression and gene amplification in gastric carcinoma and their ***:One hundred and forty-five formalin-fixed and paraffin-embedded tumor tissue samples from Chinese gastric carcinoma patients were studied with immunohistochemistry(IHC)and fluorescence in situ hybridization(FISH)*** data about all patients were ***:The levels of her-2 3+,her-2 2+and her21+were measurable in 6.9%,8.3%and 17.2%of the samples,*** her-2 was stained in 67.6% of the *** showed that her-2 gene was amplified in 18 samples,10 her-2 3+samples,5 her-2 2+samples,and 3 her-2 1+samples with IHC ***-2 status was not correlated with the sex and age of patients,and tumor size,location or differentiation,but with the depth of invasion,TNM stage,lymph node and distant metastasis as well as histopathological classification of gastric cancer(Pher-2 expression should be analyzed with *** of her-2 gene amplification can assess the malignant biological behaviors and prognosis of gastric cancer.

关键词：基因扩增蛋白表达胃癌临床意义荧光原位杂交免疫组织化学 her 肿瘤组织

MXene-based hybrid materials for electrochemical and photoelectrochemical H_(2) generation

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Journal of Energy Chemistry 2024年第6期93卷 111-125,I0004页

作者： Jun Young Kim Seung Hun Roh Chengkai Xia Uk Sim Jung Kyu Kim School of Material Science and Engineering North University of ChinaTaiyuan 030051China School of Chemical Engineering Sungkyunkwan University(SKKU)2066Seobu-roJangan-guSuwon 16419Republic of Korea Hydrogen Energy Technology Laboratory Korea Institute of Energy Technology(KENTECH)NajuJeollanamdo 58330Republic of Korea SKKU Advanced Institute of Nano Technology(SAINT) Sungkyunkwan University(SKKU)2066Seobu-roJangan-guSuwon 16419Republic of Korea

The conversion of solar energy to produce clean hydrogen fuel through water splitting is an emerging strategy for efficiently storing solar energy in the form of solar *** aligns with the increasing global demand for the development of an ideal energy alternative to fossil fuels that does not emit greenhouse ***(EC) and photoelectrochemical(PEC) water splitting technologies have garnered significant attention worldwide for advanced hydrogen solar fuel production in recent *** achieve sustainable green H_(2) production,it is essential to create efficient catalyst materials that are low-cost and can replace expensive noble metal-based *** characteristics make them an ideal catalyst material for the ***-dimensional MXenes with M_(n+1)X_(n) structure have been identified as a promising option for EC and PEC water splitting due to their superior hydrophilicity,metal-like conductivity,large surface area,and adjustable surface ***,we present a summary of recent advancements in the synthesis and performance enhancement methods for MXene hybrid materials in hydrogen production through EC and PEC water ***,we examine the challenges and insights associated with the rational design of MXene-based hybrid materials to facilitate efficient water splitting for sustainable solar fuel production.

关键词： MXene Hybrid materials EC PEC her OER Water splitting

球形碳掺杂钴基催化剂用于her和锌空电池阴极反应

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化学研究与应用 2022年第6期34卷 1423-1428页

作者：冯云晓陈昌东徐伏李艳岭杨潘婷腊明平顶山学院化学与环境工程学院河南平顶山467000

电催化水裂解是一种制备清洁氢气的潜在方法,寻找一种催化剂提高电催化阴极析氢反应(her)速率是研究热点。通过制备球形碳掺杂钴基催化剂并对其进行硫化或磷化处理以提高其催化性能。三种产物中,CoP/C催化性能最优。在酸性和碱性条件下... 详细信息

电催化水裂解是一种制备清洁氢气的潜在方法,寻找一种催化剂提高电催化阴极析氢反应(her)速率是研究热点。通过制备球形碳掺杂钴基催化剂并对其进行硫化或磷化处理以提高其催化性能。三种产物中,CoP/C催化性能最优。在酸性和碱性条件下,电流密度为10 mA·cm^(-2)时的析氢过电位分别为154 mV和89 mV,并且稳定性优良。该催化剂被进一步用作空气阴极,以构建用于能量转换的锌-空气电池。该电池的开路电压为1.35 V,维持50 h没有衰减,并且通过27 h的长期循环试验评估了其可充电性,电压间隙为1.2 V。这项工作为设计球形非贵金属多组分her催化剂提供了新的策略。

关键词： CoP her 锌-空电池

Templated synthesis of transition metal phosphide electrocatalysts for oxygen and hydrogen evolution reactions

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Journal of Energy Chemistry 2024年第2期89卷 646-669,I0014页

作者： Rose Anne Acedera Alicia Theresse Dumlao DJ Donn Matienzo Maricor Divinagracia Julie Anne del Rosario Paraggua Po-Ya Abel Chuang Joey Ocon Laboratory of Electrochemical Engineering(LEE) Department of Chemical EngineeringUniversity of the PhilippinesDilimanQuezon City 1101Philippines Mechanical Engineering University of CaliforniaMercedCA 95343USA Energy Engineering Program College of EngineeringUniversity of the PhilippinesDilimanQuezon City 1101Philippines

Transition metal phosphides(TMPs)have been regarded as alternative hydrogen evolution reaction(her)and oxygen evolution reaction(OER)catalysts owing to their comparable activity to those of noble metal-based *** have been produced in various morphologies,including hollow and porous nanostructures,which are features deemed desirable for electrocatalytic *** synthesis routes are often responsible for such *** paper reviews the latest advances and existing challenges in the synthesis of TMP-based OER and her catalysts through templated methods.A comprehensive review of the structure-property-performance of TMP-based her and OER catalysts prepared using different templates is *** discussion proceeds according to application,first by her and further divided among the types of templates used-from hard templates,sacrificial templates,and soft templates to the emerging dynamic hydrogen bubble *** catalysts are then reviewed and grouped according to their ***,prospective research directions for the synthesis of hollow and porous TMP-based catalysts,such as improvements on both activity and stability of TMPs,design of environmentally benign templates and processes,and analysis of the reaction mechanism through advanced material characterization techniques and theoretical calculations,are suggested.

关键词： OER her Transition metal phosphide Templated synthesis Electrocatalysts

Palladium single atoms from melting nanoparticles on WO_(3-x) for boosted hydrogen evolution reaction

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Journal of Energy Chemistry 2024年第4期91卷 637-644页

作者： Zhongmiao Gong Zhigang Chen Hao Li Guang Yang Min Yuan Zhiyun Li Xueying Wan Yi Cui School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026AnhuiChina i-lab Vacuum Interconnected Nanotech WorkstationSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123JiangsuChina School of Materials Science and Engineering Chongqing University of TechnologyChongqing 400054China Key Laboratory of Precision and Intelligent Chemistry School of Chemistry and Materials ScienceHefei National Research Center for Physical Sciences at the MicroscaleNational Synchrotron Radiation LaboratorySchool of Nuclear Science and TechnologyUniversity of Science and Technology of ChinaHefei 230026AnhuiChina

Surface-supported isolated atoms in single-atom catalysts(SACs)grant maximum utilization of metals in heterogeneous ***,we report a feasible pyrolysis strategy to synthesize Pd single atoms by thermally melting Pd nanoparticles on an oxygen-vacancy-rich tungsten-oxide matrix at reduction *** ambient pressure X-ray photoelectron spectroscopy was used to monitor the formation of zero-valence Pd single atoms and the increased metallic feature of WO_(3-x)***,the as-obtained zero-valence Pd single-atom catalyst exhibits a markedly boosted her activity with a low overpotential(η_(10)=70 mV)at the current density of 10 mA/cm2and a small Tafel slope(b=68 mV/dec),nearly 150 mV and a 3,0-fold enhancement than those of Pd nanoparticles(η_(10)=220 mV,b=133 mV/dec)under the same *** addition,quasi in situ XPS results suggest the hydrogen spillover effect is more likely to occur on Pd single atoms during the electrochemical *** work may pave an interesting route for the rational design of highly-efficient single-atom catalysts,and the elucidation of corresponding enhanced reaction mechanisms by the utilization of advanced characterization techniques.

关键词： Pd WO_(3-x) Single-atom catalysts NAP-XPS her

Progress in metal oxide-based electrocatalysts for sustainable water splitting

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Materials Reports(Energy) 2024年第3期4卷 19-34页

作者： Aasiya S.Jamadar Rohit Sutar Susmita Patil Reshma Khandekar Jyotiprakash B.Yadav Vacuum Techniques and Thin Film Laboratory USICShivaji UniversityKolhapur416004MaharashtraIndia

Metal oxide-based electrocatalysts are promising alternatives to platinum group metals for water splitting due to their low cost,abundant raw materials,and impressive *** review covers recent progress in various metal oxides tailored for hydrogen and oxygen evolution reactions,discussing their crystal structure,composition,and surface modification influence on *** like surface engineering,doping,and nanostructuring are evaluated for enhancing catalytic activity and *** key considerations for commercialization are highlighted,emphasizing ongoing research,innovation,and future scope to drive widespread adoption of water-splitting technology for a cleaner and sustainable future.

关键词： Metal oxide her OER Electrocatalyst Overall water spilling