Electroless-hydrothermal construction of nickel bridged nickel sulfide@mesoporous carbon nitride hybrids for highly efficient noble metal-free photocatalytic H2 production
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2020年第10期
论文作者：Lu Zhang Yuanyuan Cui Fengli Yang Quan Zhang Juhua Zhang Mengting Cao Wei-Lin Dai
文章页码：176 - 186
摘 要：Metallic Ni bridged Ni S@mesoporous carbon nitride hybrids were for the first time fabricated through a one-pot electroless-assisted hydrothermal method. The intimate Ni bridge between the interface of mesoporous carbon nitride and Ni S was confirmed by HRTEM and in-depth XPS analysis using an Ar+-cluster sputtering gun and a possible mechanism was put forward to elucidate the formation process of the unique structure. Without adding any noble metals as cocatalysts, the optimized catalyst 10 % NiS/mCN-160-12 showed a H2 evolution rate of 1419 μmol·g-1·h-1, which is about 34 and 14 fold higher than that of bare mesoporous carbon nitride and Ni S, respectively. The dramatically enhanced photocatalytic performance was mainly ascribed to the synergistic effect of Ni S cocatalyst loading and the formation of metallic Ni between the interface of mesoporous carbon nitride and Ni S, which served as a charge-transfer bridge to facilitate the transfer and separation of photo-induced electron-hole pairs.
Lu Zhang1，Yuanyuan Cui2，Fengli Yang1，Quan Zhang1，Juhua Zhang1，Mengting Cao1，Wei-Lin Dai1
1. Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University2. Shimadzu China Co.LTD.
摘 要：Metallic Ni bridged Ni S@mesoporous carbon nitride hybrids were for the first time fabricated through a one-pot electroless-assisted hydrothermal method. The intimate Ni bridge between the interface of mesoporous carbon nitride and Ni S was confirmed by HRTEM and in-depth XPS analysis using an Ar+-cluster sputtering gun and a possible mechanism was put forward to elucidate the formation process of the unique structure. Without adding any noble metals as cocatalysts, the optimized catalyst 10 % NiS/mCN-160-12 showed a H2 evolution rate of 1419 μmol·g-1·h-1, which is about 34 and 14 fold higher than that of bare mesoporous carbon nitride and Ni S, respectively. The dramatically enhanced photocatalytic performance was mainly ascribed to the synergistic effect of Ni S cocatalyst loading and the formation of metallic Ni between the interface of mesoporous carbon nitride and Ni S, which served as a charge-transfer bridge to facilitate the transfer and separation of photo-induced electron-hole pairs.
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