无定形固体
材料科学
催化作用
氮气
化学工程
环境污染
选择性
解吸
纳米技术
选择性催化还原
吸附
有机化学
化学
环境科学
工程类
环境保护
作者
Dongtian Sun,Hongye Bai,Yong Zhao,Qianxiao Zhang,Yajie Bai,Ying Liu,Xuliang Pang,Fagen Wang,Jinrui Ding,Dongbo Xu,Weiqiang Fan,Weidong Shi
标识
DOI:10.1021/acsami.0c16337
摘要
NH3 is mainly obtained by the Haber–Bosch method in the process of industrial production, which is not only accompanied by huge energy consumption but also environmental pollution. The reduction of N2 to NH3 under mild conditions is an important breakthrough to solve the current energy and environmental problems, so the preparation of catalysts that can effectively promote the reduction of N2 is a crucial step. In this work, BiVO4 decorated with amorphous MnCO3/C double layers has been successfully synthesized by a one-step method for the first time. The C and MnCO3 have been formed as ultrathin film, which enables the establishment of a uniform and tight interface with BiVO4. The temperature-programmed desorption of N2 (N2-TPD) spectra confirmed that the MnCO3/C could endow BiVO4 with a drastic enhancement of the chemical absorption ability of a N2 molecule compared with the pristine BiVO4. Meanwhile, the method of isotope labeling proved that the catalyst exhibited excellent selectivity for the photocatalytic nitrogen reduction reaction (NRR). The production rate of NH3 up to 2.426 mmol m–2 h–1 has been achieved over the BiVO4/MnCO3/C, which is almost 8 times that of pristine BiVO4. The promoted production rate of NH3 over BiVO4/MnCO3/C could be mainly attributed to the cooperative process between MnCO3 and C amorphous layers. Therefore, this work could provide an alternative insight to understand the NRR process based on the model of a hierarchical amorphous structure.
科研通智能强力驱动
Strongly Powered by AbleSci AI