Efficient catalytic reduction of 4-nitrophenol by Cu1.96S/NSC hybrid material derived from metal-organic frameworkDongsheng Wang, Chengxin Zhang, Fanming Zeng, Xiaoli Hu, Chun Li and Zhongmin SuE3S Web Conf., 252 (2021) 02065DOI: https://doi.org/10.1051/e3sconf/202125202065