In-situ preparation of TiO2/N-doped graphene hollow sphere photocatalyst with enhanced photocatalytic CO2 reduction performance
In-situ preparation of TiO2/N-doped graphene hollow sphere photocatalyst with enhanced photocatalytic CO2 reduction performance
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原位制备TiO2/N掺杂石墨烯空心球光催化剂,增强光催化CO2还原性能
DOI:
10.1016/s1872-2067(21)63805-6
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发表时间:
2021-10
影响因子:
16.5
通讯作者:
Yu Jiaguo
中科院分区:
文献类型:
--
作者:
Wang Libo;Zhu Bicheng;Cheng Bei;Zhang Jianjun;Zhang Liuyang;Yu Jiaguo
Photocatalytic CO2conversion efficiency is hampered by the rapid recombination of photogenerated charge carriers. It is effective to suppress the recombination by constructing cocatalysts on photocatalysts with high-quality interfacial contact. Herein, we develop a novel strategy toin-situgrow ultrathinN-doped graphene (NG) layer on TiO2hollow spheres (HS) with large area and intimate interfacial contact via a chemical vapor deposition (CVD). The optimized TiO2/NG HS nanocomposite achieves total CO2conversion rates (the sum yield of CO, CH3OH and CH4) of 18.11 μmol g−1h−1, which is about 4.6 times higher than blank TiO2HS. Experimental results demonstrate that intimate interfacial contact and abundant pyridinic N sites can effectively facilitate photogenerated charge carrier separation and transport, realizing enhanced photocatalytic CO2reduction performance. In addition, this work provides an effective strategy forin-situconstruction of graphene-based photocatalysts for highly efficient photocatalytic CO2conversion.
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影响因子:
15.1
作者:
Libo Wang;Haiyan Tan;Liuyang Zhang;Bei Cheng;Jiaguo Yu
通讯作者:
Jiaguo Yu
影响因子:
23.5
作者:
Yang Xia;Jiaguo Yu
通讯作者:
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影响因子:
15.1
作者:
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通讯作者:
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影响因子:
16.5
作者:
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通讯作者:
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影响因子:
16.6
作者:
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通讯作者:
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