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Updated: Nov 5, 2025
A Continuous-flow Photocatalytic Reactor for the Precisely Controlled Deposition of Metallic Nanoparticles
Published on: April 10, 2019
A new supported Cu/Pd bimetallic nanoparticles composites prestoring reductant for nitrate removal: high reactivity
Zhanhui Shen1,2, Gege Peng3, Jialu Shi4,5
1Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, 64 East of Construction Road, Xinxiang, 453007, China. zhshen@htu.edu.cn.
Abstract:
Catalytic hydrogen reduction appears to be a promising strategy for nitrate removal. However, the danger and low utilization of H2 are the disadvantages of catalytic hydrogen reduction. Sodium borohydride (NaBH4), considered a potential candidate for hydrogen storage, has been investigated as an electron source for the catalytic reduction of contaminants. However, extensive use of NaBH4 makes commercialization costly and causes environmental pollution. In this study, we prepared supported Cu/Pd bimetallic nanoparticles that could prestore hydrogen. No additional reducing agent was required during the nitrate reduction process. The performance and mechanism of Cu/Pd bimetallic nanoparticles for nitrate reduction are discussed. Good performance was obtained with high reactivity (99.04% nitrate removal efficiency) and high selectivity for N2 (94.71%). The Cu/Pd bimetallic catalyst could be recovered by NaBH4 for 5 cycles. Moreover, a 97.49% nitrate removal efficiency was obtained for actual wastewater, indicating good prospects for nitrate reduction applications.
