Research Article


2021, 14(12): 4616–4624


Layered CuNi-Cu2O/NiAlOx nanocatalyst for rapid conversion of p-nitrophenol to p-aminophenol

Lin Fu1,§, Wei Zhou1,§, Ming Wen1 (✉), Qingsheng Wu1, Weiying Li1, Dandan Wu2 (✉), Quanjing Zhu1, Jiaqi Ran1, and Panpan Ren1

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1 School of Chemical Science and Engineering, College of Environmental Science and Engineering, Key Laboratory of Yangtze River Water Environment, Ministry of Education, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, Shanghai 200092, China
2 School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China
§ Lin Fu and Wei Zhou contributed equally to this work.

Keywords: layered CuNi-Cu2O/NiAlOx, heterostructure, catalyst, p-nitrophenol, p-aminophenol
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In order to well arrange active sites and avoid byproducts, the reasonable structured carrier nanocatalyst plays a crucial role in high catalytic performance, but still remains a challenge. Herein, the layered CuNi-Cu2O/NiAlOx nanosheets have been constructed through hydrothermal synthesis followed by calcination and H2 reduction treatment process. The in-situ formed CuNi nanoalloys (NAs) and nano-Cu2O were evenly distributed on the bilateral surface of layered NiAlOx nanosheets. Based on the planar structure of nanosheet, the synergy between catalytic active CuNi NAs and photocatalytic active nano-Cu2O endows CuNi-Cu2O/NiAlOx nanosheets with rapid conversion efficiency for catalyzing p-nitrophenol (p-NP, 14 mg·L-1) to p-aminophenol (p-AP) in 32 s with the reaction rate constant k up to 0.1779 s-1, and no obvious performance decay can be observed even over 27 cycles. Moreover, high concentration of p-NP at 10 and 20 g·L-1 could be reduced to p-AP within 14 and 20 min, respectively. Such designed nanoalloy/bimetal-oxide heterostructure can provide a solution for rapid conversion of aminoaromatics from nitroaromatics wastewater even at a large concentration range.
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Layered CuNi-Cu2O/NiAlOx nanocatalyst for rapid conversion of p-nitrophenol to p-aminophenol. Nano Res. 2021, 14(12): 4616–4624

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