Performance of Ni-Cu bimetallic co-catalyst g-C3N4 nanosheets for improving hydrogen evolution
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2020年第14期
论文作者：Zhiliang Jin Lijun Zhang
文章页码：144 - 156
摘 要：The Ni-Cu bimetallic nanoparticles were successfully anchorred on the surface of g-C3 N4 nanosheets by a simple heat treatment process which was applied to the photocatalytic hydrogen evolution reaction. Insitu introduction of Ni-Cu could significantly improve the photocatalytic hydrogen evolution performance compared with pure g-C3 N4 in the system sensitized by eosin Y under a visible irradiation condition. The hydrogen production activity of the composite reached 104.4 ?mol（2088.28 ?mol g-1 h-1） after using the Ni Cu double promoter strategy, which was 24.3 times higher than g-C3 N4. The excellent electrical conductivity of the bimetallic Ni-Cu and the close interfacial contact between Ni Cu and g-C3 N4 played an important role for increasing the charge transfer rate. They were also the reasons of more efficient charge separation, which ultimately led to a significant promotion on the photocatalytic hydrogen production reaction. Ni-Cu/g-C3 N4 coupling with a close Schottky interface between metal and semiconductor which enhanced H2-evolution performance and TEOA oxidation kinetics. This work provided a new way to load Ni Cu bimetallic nanoparticles in situ onto g-C3 N4 and a reference on relative semiconductor materials.
Zhiliang Jin1,2,3，Lijun Zhang1,2,3
1. School of Chemistry and Chemical Engineering, North Minzu University2. Ningxia Key Laboratory of Solar Chemical Conversion Technology, North Minzu University3. Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University
摘 要：The Ni-Cu bimetallic nanoparticles were successfully anchorred on the surface of g-C3 N4 nanosheets by a simple heat treatment process which was applied to the photocatalytic hydrogen evolution reaction. Insitu introduction of Ni-Cu could significantly improve the photocatalytic hydrogen evolution performance compared with pure g-C3 N4 in the system sensitized by eosin Y under a visible irradiation condition. The hydrogen production activity of the composite reached 104.4 ?mol（2088.28 ?mol g-1 h-1） after using the Ni Cu double promoter strategy, which was 24.3 times higher than g-C3 N4. The excellent electrical conductivity of the bimetallic Ni-Cu and the close interfacial contact between Ni Cu and g-C3 N4 played an important role for increasing the charge transfer rate. They were also the reasons of more efficient charge separation, which ultimately led to a significant promotion on the photocatalytic hydrogen production reaction. Ni-Cu/g-C3 N4 coupling with a close Schottky interface between metal and semiconductor which enhanced H2-evolution performance and TEOA oxidation kinetics. This work provided a new way to load Ni Cu bimetallic nanoparticles in situ onto g-C3 N4 and a reference on relative semiconductor materials.
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