A study on the high efficiency reduction of p-nitrophenol (4-NP) by a Fe(OH)3/Fe2O3@Au composite catalyst

Meirong Fu; Mingqiang Li; Yingying Zhao; Yunxiang Bai; Xingzhong Fang; Xiaolong Kang; Min Yang; Yanping Wei; Xia Xu

doi:10.1039/d1ra04073a

A study on the high efficiency reduction of p-nitrophenol (4-NP) by a Fe(OH)₃/Fe₂O₃@Au composite catalyst

RSC Adv. 2021 Aug 3;11(43):26502-26508. doi: 10.1039/d1ra04073a. eCollection 2021 Aug 2.

Authors

Meirong Fu¹, Mingqiang Li¹, Yingying Zhao¹, Yunxiang Bai¹, Xingzhong Fang¹, Xiaolong Kang¹, Min Yang¹, Yanping Wei¹, Xia Xu¹

Affiliation

¹ College of Science, Gansu Agricultural University No. 1 Yingmen Village Lanzhou 730070 P. R. China xuxia@gsau.edu.cn.

Abstract

Precious metal nanometric catalysts are widely used in the removal of harmful substances. In the process of synthesis and catalytic reaction, it is particularly important to study green and simple synthesis methods and high catalytic efficiency. In this paper, a green one-step method was used to synthesize the Fe(OH)₃/Fe₂O₃@Au composite catalyst, in which Au was single atom-dispersed. The removal of 4-nitrophenol (4-NP), a typical dangerous chemical widely existing in factory waste gas, waste water and automobile exhaust gas, was catalysed by Fe(OH)₃/Fe₂O₃@Au. The catalytic performance of Fe(OH)₃/Fe₂O₃@Au with different synthesis conditions (different amounts of MES, NaBH₄, FeSO₄, Au and Pt) on the 4-NP reduction reaction were systematically studied. Finally, the stability and recyclability of Fe(OH)₃/Fe₂O₃@Au composite nanocatalyst were investigated thoroughly.