聚合物的连接单元调制诱导聚合物/g-C3N4异质连接中的I型到S型转换,以增强演变和 (VI) 减少
Xiao Han1, Xiujuan Zhong1, Fanpeng Meng1
1Shandong Key laboratory of Chemical Energy Storage and Novel Cell Technology, College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China.
设计聚合物异质连接 (PHJs) 使用基于三的结合多孔聚合物 (CPPs) 和碳化物 (CN) 增强光催化. 分子调整创建了一个S模式异质连接 (TB/CN),具有优越的演变和污染物减少.
科学领域:
- 材料科学 材料科学 材料科学
- 光催化作用的光催化
- 聚合物化学 聚合物化学
背景情况:
- 聚合物异质连接 (PHJ) 提供了增强的光催化剂性能.
- 设计具有最佳能量水平和界面协同作用的PHJ仍然具有挑战性.
- 精确的分子结构调整是有效PHJ设计的关键.
研究的目的:
- 通过调节连接单元,合成两种基于三的合多孔聚合物 (CPPs),TB和TR.
- 使用球磨法构建TB/CN和TR/CN的PHJ.
- 研究这些PHJ用于光催化物的结构和电子特性.
主要方法:
- 基于三的结合多孔聚合物 (CPP) 的合成.
- 用g-C3N4制造的聚合物异质连接 (PHJ) 通过球磨.
- 使用理论计算,EPR和现场XANES进行表征.
- 对进化和Cr (VI) 减少的光催化活性的评估.
主要成果:
- TB/CN形成了一个S模式异构连接,而TR/CN形成了一个I型异构连接.
- 结核病/CN表现出增强的内部电场,氧化还原能力和刺激子寿命.
- TB/CN实现了9.11 mmol g−1 h−1 的气演化率和98.5%的Cr−VI) 减少.
- 在光催化活性方面,TB/CN显著超过TR/CN和原始g-C3N4.
结论:
- 在CPP中调节连接单元有效调整PHJ接口属性.
- S-方案TB/CN异质连接显示出卓越的光催化性能.
- 这一战略为设计高效的聚合物基光催化剂提供了一条途径.
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