文献类型：期刊文献

英文题名：2D bimetallic RuNi alloy Co-catalysts remarkably enhanced the photocatalytic H2 evolution performance of g-C3N4 nanosheets

作者：Han, Xin[1];Si, Tucaoquan[1];Liu, Qiaona[1];Zhu, Feifei[1];Li, Renjie[1];Chen, Xinyu[1];Liu, Jichang[1,3];Sun, Hui[1];Zhao, Jigang[3];Ling, Hao[1];Zhang, Qinghong[2];Wang, Hongzhi[2]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China;[3]Shihezi Univ, Sch Chem & Chem Engn, Key Lab Green Proc Chem Engn Xinjiang Bingtuan, Shihezi 832003, Peoples R China

年份：2021

卷号：426

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20212510543949);WOS:【SCI-EXPANDED(收录号:WOS:000711779700004)】；

基金：We acknowledge financial support from Joint Fund by the National Natural Science Foundation of China and PetroChina, and the National Natural Science Foundation of China (No. U1862204, 51572046) . Xin Han was partly supported by Shanghai Super Postdoctoral Incentive Program.

语种：英文

外文关键词：2D materials; RuNi alloys; g-C3N4; Co-catalyst; Photocatalytic hydrogen evolution

摘要：The development of Pt-free co-catalysts matched with photocatalysts is one of the key technologies to improve the photocatalytic hydrogen production performance. Herein, the bimetallic RuNi alloys with a 2D structure are reported as a co-catalyst of g-C3N4 nanosheets for the first time. Its 2D structure can be well-matched with the 2D g-C3N4 nanosheets to form a composite photocatalyst with close contact. On the one hand, it is beneficial to reduce the transfer barrier of photogenerated electrons, and on the other hand, it can provide much more reaction sites for photocatalytic hydrogen production. Besides, the synergistic effect between Ru and Ni metals in the 2D bimetallic RuNi alloys makes it exhibit better co-catalytic performance than that of Pt. The RuNi/g-C3N4 photocatalyst with about 2.3% Ru contents shows a hydrogen production performance of up to 35,100 umol/g/h under simulated sunlight irradiation, which is more than twice that of the Pt/g-C3N4 photocatalyst with the same noble metal contents. The theoretical results by DFT calculation verify the experimental results and show that the 2D RuNi alloys have better performance of adsorbing H atoms and desorbing hydrogen. This work provides new insight for the development of efficient Pt-free metal cocatalysts and makes a significant step toward the development of co-catalyst with 2D structure for photocatalytic hydrogen evolution.