Synthesis of plasmonic bismuth metal deposited InVO4 nanosheets for enhancing solar light-driven photocatalytic nitrogen fixation

Synthesis of plasmonic bismuth metal deposited InVO4 nanosheets for enhancing solar light-driven photocatalytic nitrogen fixation
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等离子体铋金属沉积 InVO4 纳米片的合成用于增强太阳光驱动的光催化固氮

DOI:
10.1039/c9se01136f
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发表时间:
2020-03
影响因子:
5.6
通讯作者:
Zheng Nan
Zheng Nan
中科院分区:
材料科学3区
文献类型:
--
作者:
Wang Jiawei;Hua Chenghe;Dong Xiaoli;Wang Yu;Zheng Nan

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在这项研究中,通过两步水热法成功制备了金属Bi沉积钒酸铟纳米片(Bi/InVO4)光催化剂。采用多种表征技术研究 Bi/InVO4 的晶体结构、形貌以及光学和电学性质。通过在温和条件下光催化固氮评估所制备样品的光催化性能。结果表明,5% Bi/InVO4 表现出最佳的光催化性能,NH3 的生成速率高达 626 μmol g−1 h−1,是纯 InVO4 的 5.2 倍。增强的光催化活性是由金属Bi赋予的表面等离子体共振(SPR)引起的,增强了光捕获以及电荷载流子的有效分离和迁移。同时,5% Bi/InVO4 也表现出多循环 N2 固定的稳定性。该研究为在温和条件下合成高性能光催化固氮催化剂提供了新的研究策略。
In this study, metallic Bi deposited indium vanadate nanosheet (Bi/InVO4) photocatalysts were successfully fabricated by a two-step hydrothermal method. Multiple characterisation techniques were used to investigate the crystal structures, morphologies, and optical and electrical properties of Bi/InVO4. The photocatalytic performance of the as-prepared samples was evaluated via photocatalytic nitrogen fixation under mild conditions. The results show that 5% Bi/InVO4 exhibits the optimal photocatalytic performance, and the generation rate of NH3 is as high as 626 μmol g−1 h−1, which is 5.2 times higher than that of pure InVO4. The enhanced photocatalytic activity is caused by the surface plasmon resonance (SPR) endowed by metallic Bi which enhanced the light-harvesting and the effective separation and migration of charge carriers. Meanwhile, 5% Bi/InVO4 also demonstrates stability in multicycle N2 fixation. This study provides a new research strategy to synthesize high-performance catalysts for photocatalytic nitrogen fixation under mild conditions.
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