| 薄层氮化碳光催化还原CO_2性能研究 |
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| 引用本文： | 程荧荧,赵震,韦岳长,姜桂元,王雅君.薄层氮化碳光催化还原CO_2性能研究[J].工业催化,2018,26(10):97-101. |
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| 作者姓名： | 程荧荧 赵震 韦岳长 姜桂元 王雅君 |
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| 作者单位： | 1.中国石油大学(北京)重质油国家重点实验室,北京 102249;2.沈阳师范大学能源与环境催化研究所,辽宁 沈阳 110034 |
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| 基金项目： | 国家自然科学基金(21477164; 21673142)资助项目 |
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| 摘 要： | 以氮化碳(g-CN)为原料,采用水蒸汽焙烧剥离法在Ar/H2O氛围下制备薄层氮化碳(Hg-CN),并对其进行XRD、TEM、FT-IR、BET和UV-Vis DRS等表征。结果表明,进行剥离后,H-g-CN比表面积相比剥离前明显增大。H-g-CN的光催化还原CO_2活性大大高于未剥离gCN的活性,光照反应9 h,H-g-CN光催化还原CO_2活性由剥离前的11. 4μmol·g~(-1)提高至24. 6μmol·g~(-1),H-g-CN的CO选择性为91. 2%,未剥离的g-CN的CO选择性为89. 1%,并提出相应的反应机理。
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| 关 键 词： | 催化化学 薄层 氮化碳 光催化还原CO2 |
Study on the CO2 photocatalytic reduction of thin-layered carbon nitride |
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| Cheng Yingying,Zhao Zhen,Wei Yuechang,Jiang Guiyuan,Wang Yajun.Study on the CO2 photocatalytic reduction of thin-layered carbon nitride[J].Industrial Catalysis,2018,26(10):97-101. |
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| Authors: | Cheng Yingying Zhao Zhen Wei Yuechang Jiang Guiyuan Wang Yajun |
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| Affiliation: | 1.State Key Lab of Heavy Oil Processing,China University of Petroleum,Beijing 102249,China;2.Institute of Catalysis for Energy and Environment,Shenyang Normal University,Shenyang 110034,Liaoning,China |
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| Abstract: | The thin-layered carbon nitrides (H-g-CN) were successfully synthesized by calcination of carbon nitride (g-CN) in Ar/H2O atmosphere,and they were characterized by means of XRD,TEM,FT-IR,BET and UV-Vis DRS. It was found that,compared with g-CN,the specific surface area of H-g-CN obviously increased after calcination. The activity for CO2photoreduction of H-g-CN was much higher than that of g-CN. After 9h light irradiation,the photocatalytic reduction of CO2 activity of thin-layered carbon nitride (g-CN) was promoted to 24.6 μmol·g-1from 11.4 μmol·g-1 of carbon nitride (g-CN),in that case,the CO selectivity of H-g-CN was 91.2%,and the CO selectivity of carbon nitride before calcination was 89.1%. Moreover,the reaction mechanism was proposed. |
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| Keywords: | catalytic chemistry thin-layered carbon nitride CO2 photocatalytic reduction |
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