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DOI | 10.1016/j.apcatb.2019.05.005 |
Efficiently enhanced N-2 photofixation performance of sea-urchin-like W18O49 microspheres with Mn-doping | |
Ying, Zihao; Chen, Shengtao; Zhang, Shuai; Peng, Tianyou; Li, Renjie | |
发表日期 | 2019 |
ISSN | 0926-3373 |
EISSN | 1873-3883 |
卷号 | 254页码:351-359 |
英文摘要 | The urgency of mitigating climate change has prompted us to seek more sustainable approach to ammonia (NH3) synthesis via dinitrogen (N-2) photofixation process by using clean solar energy. Herein, a series of Mn-doped seaurchin-like monoclinic W18O49 microspheres (Mn-W18O49), which are constructed by nanorods with [010] growth orientation, are fabricated using a facile solvothermal process. It is found that the Mn2+ ions can replace the W sites in the W18O49 lattice and intervene the formation of microsphere-like structure, but facilitate the photoinduced charge separation and migration in Mn-W18O49, and thus cause a promoted N-2 photofixation ability compared with the single W18O49. Moreover, the surface Mn2+ sites in the monoclinic nanorods of W18O49 microspheres paly multiple roles in promoting the chemisorption of N-2 and H2O molecules and weakening the ultra-stable N=N bond for the NH3 production through proton coupling process. Among those Mn-W18O49 products fabricated, 3.0% Mn-doped W18O49 product achieves the highest NH3 production activity of 97.9 mu mol g(-1) h(-1) under Xe-lamp's full spectrum irradiation, 2.3 times higher than that of the single W18O49. The present sea-urchin-like Mn-W18O49 exhibits both excellent durability and efficient N-2 photofixation ability, which are of significance in sunlight utilization for artificial N-2 fixation and renewable energy conversion. |
WOS研究方向 | Chemistry ; Engineering |
来源期刊 | APPLIED CATALYSIS B-ENVIRONMENTAL
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/103181 |
作者单位 | Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Hubei, Peoples R China |
推荐引用方式 GB/T 7714 | Ying, Zihao,Chen, Shengtao,Zhang, Shuai,et al. Efficiently enhanced N-2 photofixation performance of sea-urchin-like W18O49 microspheres with Mn-doping[J],2019,254:351-359. |
APA | Ying, Zihao,Chen, Shengtao,Zhang, Shuai,Peng, Tianyou,&Li, Renjie.(2019).Efficiently enhanced N-2 photofixation performance of sea-urchin-like W18O49 microspheres with Mn-doping.APPLIED CATALYSIS B-ENVIRONMENTAL,254,351-359. |
MLA | Ying, Zihao,et al."Efficiently enhanced N-2 photofixation performance of sea-urchin-like W18O49 microspheres with Mn-doping".APPLIED CATALYSIS B-ENVIRONMENTAL 254(2019):351-359. |
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