双 S 方案 Cu2-xSe/双胞胎-Cd0.5Zn0.5S 同型异质连接与表面等离子体效应,用于高效的光催化 H2进化
Jingzhuo Tian1, Chaohong Guan2, Chao Liu3
1School of Chemical Engineering/Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi'an 710069, PR China; Shaanxi Key Laboratory for Carbon Neutral Technology, Xi'an 710069, PR China.
Journal of colloid and interface science
|April 13, 2024
概括
这项研究合成了双胞胎Cd0.5Zn0.5S (T-CZS) 和Cu2-xSe,用于增强光催化的生产. 由此产生的复合材料显示,在UV-Vis-NIR光谱中,的演化率显著增加.
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
- 纳米技术纳米技术
背景情况:
- 高效的电荷分离和广泛的光吸收对于半导体光催化剂至关重要.
- 开发新的光催化材料对于太阳能能量转化至关重要.
研究的目的:
- 为了合成双胞胎Cd0.5Zn0.5S (T-CZS) 同位结和Cu2-xSe,以改善光催化的生产.
- 研究T-CZS和Cu2-xSe对电荷分离和光利用的协同效应.
主要方法:
- 水热合成的T-CZS和Cu2-xSe.
- 用于结合Cu2-xSe和T-CZS的溶剂蒸发策略.
- 在各种光照条件下测量光催化演化速率.
- 密度功能理论 (DFT) 计算和电子磁共振谱学用于机制分析.
主要成果:
- 5 wt%的Cu2-xSe/T-CZS复合物实现了60 mmol·h-1·g-1的进化率,显著优于纯成分.
- 该复合材料在近红外 (NIR) 光 (>800 nm) 下表现出0.46 mmol·h-1·g-1的显著进化率.
- 一个双S模式的电荷转移机制被确定为抑制电子孔重组的关键.
结论:
- 由于有效的电荷分离和广泛的光吸收,Cu2-xSe/T-CZS复合物表现出卓越的光催化活性.
- 将等离子体Cu2-xSe与双胞胎T-CZS集成为有效的太阳能转换提供了一个有前途的战略.
- 这项工作为设计用于生产的先进光催化剂提供了洞察力.
关键词:
在Cu(2−x) SeSe这是一个双S计划.人与人异性结合 (Homo-heterojunctions) 是一个同类异性结合.局部化的表面等离子体共振.光催化剂是一种光催化剂.双胞胎Cd{0.5}Zn{0.5}S 的情况更多相关视频
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