In-situ grown nanoporous Zn-Cu catalysts on brass foils for enhanced electrochemical reduction of carbon dioxide

Hu, Hanjun1; Tang, Yang2; Hu, Qing3; Wan, Pingyu2; Dai, Liming4; Yang, Xiao Jin1

2018-07

10.1016/j.apsusc.2018.03.146

APPLIED SURFACE SCIENCE   影响因子和分区

0169-4332

1873-5584

In-situ grown nanoporous Zn-Cu catalysts were prepared by simply annealing a commercial brass foil at 500 degrees C in air, followed by electrochemical reduction. During the annealing process, Zn preferentially melted and migrated out of the framework of the alloy to form a thin layer of ZnO on its surface. Subsequent electroreduction created nanoporous Zn-enriched surface. The Zn concentration increased from 36% to 50% by 10 min, to 81% by 3 h, and to 87% by 12 h annealing treatment while the average pore size decreased from 290 nm to 120 nm as the annealing time increased from 1 h to 12 h. Faradaic efficiency of CO2 reduction to CO and HCOOH was enhanced by nearly 4 and 6 times, respectively, as compared to untreated brass foils. The nanoporous Zn-Cu catalyst presented a stable ratio of CO/H-2 and a steady working current density in a continuous electrolysis of 18 h in 0.5 M KHCO3 solution. (C) 2018 Elsevier B. V. All rights reserved.

Carbon dioxide Electrochemical reduction Nanoporous In-situ Brass

SCI ; EI

英语

其他

Fundamental Research Funds for the Central Universities of China (BUCT)[JD1712]

Chemistry ; Materials Science ; Physics

Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter

WOS:000430477900035

ELSEVIER SCIENCE BV

20181304963307

Annealing ; Binary alloys ; Brass ; Carbon dioxide ; Copper alloys ; Electrolytic reduction ; II-VI semiconductors ; Indium alloys ; Nanocatalysts ; Pore size ; Potassium compounds ; Zinc alloys ; Zinc oxide

Ore Treatment:533.1 ; Heat Treatment Processes:537.1 ; Copper Alloys:544.2 ; Zinc and Alloys:546.3 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Inorganic Compounds:804.2 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.Beijing Univ Chem Technol, Coll Chem Engn, Beijing 100029, Peoples R China
2.Beijing Univ Chem Technol, Coll Appl Electrochem, Beijing 100029, Peoples R China
3.South Univ Sci & Technol China, Shenzhen 518055, Guangdong, Peoples R China
4.Beijing Univ Chem Technol, Coll Energy, Beijing 100029, Peoples R China

Hu, Hanjun,Tang, Yang,Hu, Qing,et al. In-situ grown nanoporous Zn-Cu catalysts on brass foils for enhanced electrochemical reduction of carbon dioxide[J]. APPLIED SURFACE SCIENCE,2018,445:281-286.

Hu, Hanjun,Tang, Yang,Hu, Qing,Wan, Pingyu,Dai, Liming,&Yang, Xiao Jin.(2018).In-situ grown nanoporous Zn-Cu catalysts on brass foils for enhanced electrochemical reduction of carbon dioxide.APPLIED SURFACE SCIENCE,445,281-286.

Hu, Hanjun,et al."In-situ grown nanoporous Zn-Cu catalysts on brass foils for enhanced electrochemical reduction of carbon dioxide".APPLIED SURFACE SCIENCE 445(2018):281-286.