Ternary alloyed AgClxBr1-x nanocrystals: facile modulation of electronic structures toward advanced photocatalytic performance
文献类型：期刊论文
| 作者 | Cai B ; Wang J ; Han DX ; Gan SY ; Zhang QX ; Wu ZJ ; Niu L |
| 刊名 | nanoscale
 |
| 出版日期 | 2013 |
| 卷号 | 5期号:22页码:10989-10995 |
| 关键词 | VISIBLE-LIGHT IRRADIATION AG-AT-AGCL HYDROGEN-PRODUCTION HIGHLY EFFICIENT NANOSTRUCTURES NANOPARTICLES SUNLIGHT WATER |
| ISSN号 | 2040-3364 |
| 通讯作者 | han dx |
| 中文摘要 | manipulating the electronic structure of semiconductor photocatalysts represents an ideal approach for the exploration and development of photocatalysis. however, it still remains a challenge in terms of silver halide photocatalysts. herein, we report ternary alloyed agclxbr1-x nanocrystals (ncs) synthesized by controlling the crystal growth process within a facile microemulsion system. the alloyed ncs crystallize in a homogeneous rock-salt crystal structure and possess tunable bandgaps from 2.5 to 3.0 ev obtained by varying the halogen mole ratios (cl/br). their photocatalytic activities for dye degradation and co2 reduction are found to depend strongly on the chemical compositions, and among them, the agcl0.75br0.25 sample exhibits the highest activity (about 2-4 times higher than agcl and agbr). further theoretical calculations demonstrate that a decrease of the ratios of cl/br lowers the levels of the conduction band minimum and thereby narrows the bandgaps. combining the theoretical and experimental results, the highest activity can be rationally ascribed to the optimum conduction band levels, which balances the overall effect of bandgap, electronic coupling and redox potential. this methodological exploration of engineering the bandgap of silver halide materials is a step forward toward the development of advanced photocatalysts and will shed light on devising various semiconductor photocatalytic systems. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000326225500035 |
| 公开日期 | 2014-04-16 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/50150]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Cai B,Wang J,Han DX,et al. Ternary alloyed AgClxBr1-x nanocrystals: facile modulation of electronic structures toward advanced photocatalytic performance[J]. nanoscale,2013,5(22):10989-10995. |
| APA | Cai B.,Wang J.,Han DX.,Gan SY.,Zhang QX.,...&Niu L.(2013).Ternary alloyed AgClxBr1-x nanocrystals: facile modulation of electronic structures toward advanced photocatalytic performance.nanoscale,5(22),10989-10995. |
| MLA | Cai B,et al."Ternary alloyed AgClxBr1-x nanocrystals: facile modulation of electronic structures toward advanced photocatalytic performance".nanoscale 5.22(2013):10989-10995. |
入库方式： OAI收割
来源：长春应用化学研究所
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