Bagasse cellulose-based S-type Bi2O3/Zn3In2S6 photocatalyst for efficient and stable degradation of 2,4-dichlorophenol under visible light.
Bagasse cellulose-based S-type Bi2O3/Zn3In2S6 photocatalyst for efficient and stable degradation of 2,4-dichlorophenol under visible light.
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DOI：
10.1016/j.jcis.2023.08.028
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发表时间：
2023-08
影响因子：
9.9
通讯作者：
Yinna Liang;Jianhua Xiong;Qifeng Yang;Shuangfei Wang
中科院分区：
文献类型：
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作者：
Yinna Liang;Jianhua Xiong;Qifeng Yang;Shuangfei Wang
2，4-二氯苯酚（2，4-DCP）对环境和人类健康的危害要求有效的降解技术。本研究以Bi 2 O3/Zn 3 In 2S 6异质结光催化剂为研究对象，通过简单的水热法构建了一种“S方案”的光催化剂。然后将光催化剂嵌入甘蔗渣纤维素载体（SBC/BO/ZIS）中，显示出优异的2，4-DCP降解能力。结果表明，S型Bi 2 O3/Zn 3 In 2S 6促进了光生载流子的分离。SBC/BO/ZIS复合物与单独的Bi 2 O3和Zn 3 In 2S 6相比，增大了材料的比表面积（91.7880 m2/g），拓宽了材料的光吸收范围（570 nm），表现出了良好的光催化性能。50 mg/L的2，4-DCP在120 min内降解率达到97%。将BO/ZIS包封在SBC中不仅提高了材料回收和再循环的效率，而且还允许以循环方式连续降解2，4-DCP，将降解率保持在90%至97%之间。XRD表征表明，材料的物理性能不受影响。电子顺磁共振分析和自由基捕获实验表明，2，4-DCP的降解主要受活性物种（·OH和·O2−）控制。这种创新设计显著提高了太阳光利用率，有效抑制了载流子复合，同时也促进了材料的回收和利用。这些属性为处理含有2，4-DCP的实际废水的成本效益和有效方法奠定了基础。
The environmental and human health hazards posed by 2,4-dichlorophenol (2,4-DCP) call for effective degradation technologies. This research investigates the design and application of a Bi2O3/Zn3In2S6heterojunction photocatalyst, a 'S scheme', which was constructed via a simple hydrothermal method. The photocatalyst was then embedded in a sugarcane bagasse cellulose carrier (SBC/BO/ZIS), demonstrating excellent 2,4-DCP degradation capacity. The results show that S-type Bi2O3/Zn3In2S6promotes the separation of photogenerated carriers. The SBC/BO/ZIS complex, in comparison with Bi2O3and Zn3In2S6alone, amplifies specific surface area (91.7880 m2/g) and broadens the light absorption range (570 nm) of materials, showing robust photocatalytic performance. The degradation rate of 50 mg/L 2,4-DCP reached an impressive 97% within 120 min. The encapsulation of BO/ZIS in SBC not only increases the efficiency of material recovery and recycling but also allows for continuous degradation of 2,4-DCP in cyclic manners, maintaining a degradation rate between 90% and 97%. XRD characterization shows that the physical properties of the material are not affected. The degradation of 2,4-DCP was dominantly controlled by active species (·OH and ·O2−) identified by electron paramagnetic resonance analysis and free radical trapping experiments. This innovative design significantly enhances sunlight utilization and effectively curbs charge carrier recombination, while also promoting material recovery and utilization. These attributes establish a foundation for a cost-effective and efficient means of treating actual wastewater containing 2,4-DCP.