Modular design of an efficient heterostructured FeS2/TiO2 oxygen evolution electrocatalyst via sulfidation of natural ilmenites

Chen, Zhijie1,2; Zheng, Renji1; Deng, Shimao1; Wei, Wenfei1; Wei, Wei2; Ni, Bing-Jie2; Chen, Hong1

2021-10-01

10.1039/d1ta08168c

Journal of Materials Chemistry A   影响因子和分区

2050-7488

2050-7496

Developing cost-effective and durable catalysts for the oxygen evolution reaction (OER) is of great interest for advanced energy conversion and carbon neutrality schemes. Here, we demonstrate a modular design strategy to engineer an efficient heterostructured electrocatalyst FeS2/TiO2 (S-FTO) via a sulfidation process on natural ilmenites (FTO), which integrates high OER activity, good conductivity, and high stability. The modular catalyst, S-FTO catalyst, shows a low overpotential of 230 mV to achieve 10 mA cm(-2), as well as excellent stability in alkaline solution. Typically, S-FTO exhibits OER activity 19 times higher than FTO at an overpotential of 300 mV. In-depth investigations indicate that the high OER activity of S-FTO mainly originates from accelerated surface self-reconstruction induced by lattice S etching within the OER potential region, and the newly formed FeOOH on the outer layer acts as the active species for the OER. The remaining FeS2 regulates the surface electronic properties and enhances the conductivity, while TiO2 improves the stability. The modular design strategy demonstrated here will enable the design of low-cost heterostructures as high-efficiency catalysts for challenging energy storage/conversion reactions in an eco-friendly and sustainable manner.

SCI ; EI

英语

第一 ; 通讯

National Natural Science Foundation of China[21777045,61875119] ; Australian Research Council (ARC)[FT160100195] ; Foundation of Shenzhen Science, Technology and Innovation Commission (SSTIC)[2020231312,"JCYJ20190809144409460"] ; Natural Science Funds for Distinguished Young Scholar of Guangdong Province, China[2020B151502094]

Chemistry ; Energy & Fuels ; Materials Science

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary

WOS:000714138400001

ROYAL SOC CHEMISTRY

20214811227333

Cost effectiveness ; Electrocatalysts ; Electronic properties ; Energy conversion ; Pyrites ; Titanium dioxide

Minerals:482.2 ; Energy Conversion Issues:525.5 ; Chemical Agents and Basic Industrial Chemicals:803 ; Inorganic Compounds:804.2 ; Industrial Economics:911.2

Web of Science

1.Southern Univ Sci & Technol, State Environm Protect Key Lab Integrated Surface, Shenzhen Key Lab Interfacial Sci & Engn Mat SKLIS, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China
2.Univ Technol Sydney, Ctr Technol Water & Wastewater, Sch Civil & Environm Engn, Sydney, NSW 2007, Australia

Chen, Zhijie,Zheng, Renji,Deng, Shimao,et al. Modular design of an efficient heterostructured FeS2/TiO2 oxygen evolution electrocatalyst via sulfidation of natural ilmenites[J]. Journal of Materials Chemistry A,2021,9(44):25032-25041.

Chen, Zhijie.,Zheng, Renji.,Deng, Shimao.,Wei, Wenfei.,Wei, Wei.,...&Chen, Hong.(2021).Modular design of an efficient heterostructured FeS2/TiO2 oxygen evolution electrocatalyst via sulfidation of natural ilmenites.Journal of Materials Chemistry A,9(44),25032-25041.

Chen, Zhijie,et al."Modular design of an efficient heterostructured FeS2/TiO2 oxygen evolution electrocatalyst via sulfidation of natural ilmenites".Journal of Materials Chemistry A 9.44(2021):25032-25041.