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基于包纤维素的S型Bi₂O₃/Zn₃在₂S₆光催化剂中,用于在可见光下有效和稳定地降解2,4-二二醇

Yinna Liang¹, Jianhua Xiong², Qifeng Yang³

¹Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industry Technology and Engineering, Guangxi University, Nanning 530004, China.

Journal of colloid and interface science

|August 16, 2023

概括

这项研究开发了一种新的Bi2O3 / Zn3In2S6光催化剂,嵌入了甘包纤维素,用于降解2,4-二二醇 (2,4-DCP). 该材料有效地从废水中去除2,4-DCP,使用增强的阳光利用率和可回收性.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
光催化作用的光催化

背景情况:

2,4-二二 (2,4-DCP) 具有重大环境和健康风险,需要先进的降解技术.
现有的光催化剂往往由于电荷载体分离不良和光吸收有限而受到损害,阻碍了它们的效率.

研究的目的:

设计和合成一种新型的S模式异构连接光催化剂 (Bi2O3/Zn3In2S6),以有效降解2,4-DCP.
通过将其嵌入到甘包纤维素载体 (SBC/BO/ZIS) 中来提高光催化剂的性能,以提高回收和稳定性.
调查降解机制并评估材料在实际废水处理中的潜力.

主要方法:

通过热水法制造Bi2O3/Zn3In2S6异质连接.
将光催化剂固定在甘袋纤维素载体上.
使用XRD,BET表面积分析和UV-Vis光谱学进行表征.
在可见光照射下进行光催化降解实验,使用EPR和激素捕获进行机械研究.

主要成果:

该SBC/BO/ZIS复合材料具有高的特定表面积 (91.7880 m2/g) 和延长光吸收到570 nm.
在120分钟内达到50mg/L 2,4-DCP的97%降解率,超过了单个成分.
在多个循环中保持在90-97%之间的降解率,没有显著的物理性质损失.
EPR和激素捕获实验确定了基 (·OH) 和超氧化物 (·O2−) 激素作为主要的活性物种.

结论:

由SBC支持的S方案Bi2O3/Zn3In2S6异质连接显著增强了2,4-DCP降解的光催化活性.
复合材料提供了更好的电荷载体分离,扩展光吸收,优越的材料回收和可重复使用性.
这种创新的光催化剂为处理2,4-DCP污染的废水提供了一个有希望的,具有成本效益的解决方案.

关键词:

双2)O3)/Zn3) 在2)S6) 固定固定有机污染物降解降解有机污染物降解光催化降解的分解这是一个S型异质连接.甘包纤维素糖甘糖甘糖甘糖甘糖甘糖甘

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