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通过通过功能组修改策略调整其捐赠-接受结构来提高聚合碳化物的光催化性能

Bei Wang¹, Mingxiu Huang², Meng Jiang²

¹College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, 571158, China; Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province, Key Laboratory of Functional Materials and Photoelectrochemistry of Haikou, Hainan Engineering Research Center of Tropical Ocean Advanced Optoelectronic Functional Materials, China.

|August 24, 2024

概括

我们开发了一种新型的聚合物碳化物 (PCN) 光催化剂,该光催化剂与4-Nitro-o-phenylenediamine进行了修改. 这种增强材料显著改善了太阳能驱动的双A (BPA) 在水中的降解.

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:

太阳能驱动的光降解为污染物的环境修复提供了一个有前途的途径.
聚合碳化物 (PCN) 是用于光催化的一种多功能材料,但其效率可能是有限的.
双A (BPA) 是一种常见的环境污染物,需要有效的降解方法.

研究的目的:

设计和合成一种新的组修饰聚合物碳化物 (PCN) 光催化剂.
为了增强PCN的光响应和电荷分离能力.
用修改的PCN.来研究双A (BPA) 的光催化降解.

主要方法:

使用尿素和4-Nitro-o-phenylenediamine进行修改PCN的一合成.
使用各种物理分析技术对光催化剂的表征.
在太阳辐射下对BPA降解的光催化活性的评估.
电子磁共振 (EPR) 和密度函数理论 (DFT) 研究以了解电荷分离机制.

主要成果:

修改后的PCN表现出扩大了对光的响应范围,这是由于酸的合和电子吸收特性.
4-Nitro-o-phenylenediamine接种显著提高了电荷分离的效率.
与未经修改的PCN相比,BPA光降解的动力常数是8.8倍高.
修改后的光催化剂表现出良好的可回收性和在不同的电子提取组修改中改进的性能.

结论:

用芳香电子吸收组对PCN进行组修改,如4-Nitro-o-phenylenediamine,是增强光催化活性的有效策略.
PCN的捐赠-接受结构在电荷分离中起着至关重要的作用,可以通过功能组修改来调整.
这种方法为像BPA这样的污染物以太阳能驱动的高效降解提供了一条可行的途径.

关键词:

双乙烯 A 是一种双乙烯.集团修改组的修改光催化剂是一种光催化剂.聚合物碳化物聚合物

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