文献类型：期刊文献

英文题名：Elimination of NO pollutant in semi-enclosed spaces over sodium-promoted cobalt oxyhydroxide (CoOOH) by oxidation and adsorption mechanism

作者：Lin, Bo[1];Wang, Aiyong[1];Guo, Yanglong[1];Ding, Yuanqing[1];Zhan, Wangcheng[1];Wang, Li[1];Guo, Yun[1];Gao, Feng[2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Res Inst Ind Catalysis, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]Pacific Northwest Natl Lab, Inst Integrated Catalysis, POB 999, Richland, WA 99352 USA

年份：2020

卷号：279

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

收录：;EI(收录号：20203309035873);WOS:【SCI-EXPANDED(收录号:WOS:000566455400005)】；

基金：This work was supported by the National Basic Research Program of China (2013CB933200), the National Natural Science Foundation of China (21922602, 21577034), 111 Project (B08021), and the Fundamental Research Funds for the Central Universities. Aiyong Wang acknowledges China Scholarship Council for the Joint-Training Scholarship Program with the Pacific Northwest National Laboratory (PNNL). The author from PNNL (FG) is supported by the U.S. DOE/Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Office. PNNL is operated by Battelle for the US DOE under contract DE-AC05-76RL01830.

语种：英文

外文关键词：NOx abatement; Semi-enclosed spaces; Ambient temperature; CoOOH; Na2S2O8

摘要：Low-concentration NOx accumulated in semi-enclosed spaces is a severe health hazard, but its efficient removal at low cost is a grand challenge. A simple method in preparing CoOOH for removal of low-concentration NO at ambient temperature is described here. The materials are synthesized by oxidizing Co(OH)(2) to CoOOH with different oxidants (Na2S2O8, O-2 and H2O2). Among them, CoOOH material prepared by Na2S2O8 (Co-NS) shows remarkable performance for NO abatement through oxidation and adsorption mechanism, while the materials synthesized by H2O2 (Co-HO) and O-2 (Co-OG) have no apparent NO removal ability. It is found that the Co-NS material contains a higher concentration of residual Na, which contributes to the decreased crystallinity and more exposed Co atoms as the active sites for NO adsorption. Following NO elimination, this material can be readily regenerated by washing treatment of Na2S2O8 aqueous solution.