文献详情
Low overpotential water oxidation at neutral pH catalyzed by a copper(ii) porphyrin
文献类型：期刊
通讯作者：Cao, R (reprint author), Renmin Univ China, Dept Chem, Beijing 100872, Peoples R China.; Cao, R (reprint author), Shaanxi Normal Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Appl Surface & Colloid Chem, Xian 710119, Shaanxi, Peoples R China.
期刊名称：CHEMICAL SCIENCE影响因子和分区
年：2019
卷：10
期：9
页码：2613-2622
ISSN：2041-6520
所属部门：化学系
摘要：Low overpotential water oxidation under mild conditions is required for new energy conversion technologies with potential application prospects. Extensive studies on molecular catalysis have been performed to gain fundamental knowledge for the rational designing of cheap, efficient and robust catalysts. We herein report a water-soluble CuII complex of tetrakis(4-N-methylpyridyl) porphyrin (1), which catalyzes the oxygen evolution reaction (OER) in neutral aqueous solutions with small overpotenti ...More
Low overpotential water oxidation under mild conditions is required for new energy conversion technologies with potential application prospects. Extensive studies on molecular catalysis have been performed to gain fundamental knowledge for the rational designing of cheap, efficient and robust catalysts. We herein report a water-soluble CuII complex of tetrakis(4-N-methylpyridyl) porphyrin (1), which catalyzes the oxygen evolution reaction (OER) in neutral aqueous solutions with small overpotentials: the onset potential of the catalytic water oxidation wave measured at current density j 1/4 0.10 mA cm(-2) is 1.13 V versus a normal hydrogen electrode (NHE), which corresponds to an onset overpotential of 310 mV. Constant potential electrolysis of 1 at neutral pH and at 1.30 V versus NHE displayed a substantial and stable current for O-2 evolution with a faradaic efficiency of > 93%. More importantly, in addition to the 4e water oxidation to O-2 at neutral pH, 1 can catalyze the 2e water oxidation to H2O2 in acidic solutions. The produced H2O2 is detected by rotating ring-disk electrode measurements and by the sodium iodide method after bulk electrolysis at pH 3.0. This work presents an efficient and robust Cu-based catalyst for water oxidation in both neutral and acidic solutions. The observation of H2O2 during water oxidation catalysis is rare and will provide new insights into the water oxidation mechanism. ...Hide

DOI：10.1039/c8sc04529a
百度学术：Low overpotential water oxidation at neutral pH catalyzed by a copper(ii) porphyrin
语言：外文
被引频次：19
人气指数：4
浏览次数：4
基金："Thousand Talents Program" in China; Fok Ying-Tong Education Foundation for Outstanding Young Teachers in University (Ministry of Education of China); National Natural Science Foundation of ChinaNational Natural Science Foundation of China [21101170, 21573139, 21773146, 21873052]; Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities; 3315-program of the Ningbo government; Research Funds of Renmin University of China
作者其他论文



Succumb to habit: Behavioral evidence for overreliance on habit learning in Internet addicts.Zhou, Bingping, Wang, Wei, Zhang, Wei, et al. .COMPUTERS IN HUMAN BEHAVIOR. 2018, 89, 230-236.
Digital transformation by SME entrepreneurs: A capability perspective.Li, Liang, Su, Fang, Zhang, Wei, et al. .INFORMATION SYSTEMS JOURNAL. 2018, 28(6,SI), 1129-1157.
High-resolution vehicle emission inventory and emission control policy scenario analysis, a case in the Beijing-Tianjin-Hebei (BTH) region, China.Yang, Wen, Yu, Chengyao, Yuan, Wen, et al. .JOURNAL OF CLEANER PRODUCTION. 2018, 203, 530-539.
Comparison of Reactive Gaseous Mercury Collection by Different Sampling Methods in a Laboratory Test and Field Monitoring.Bu, Xiaoge, Zhang, Hefeng, Lv, Guangkuo, et al. .ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS. 2018, 5(10), 600-607.
Atmospheric Mercury Outflow from China and Interprovincial Trade.Chen, Long, Liang, Sai, Zhang, Yanxu, et al. .ENVIRONMENTAL SCIENCE & TECHNOLOGY. 2018, 52(23), 13792-13800.