Modulation of Polymeric Carbon Nitrides through Supramolecular Preorganization for Efficient Photocatalytic Hydrogen Generation.
Modulation of Polymeric Carbon Nitrides through Supramolecular Preorganization for Efficient Photocatalytic Hydrogen Generation.
复制标题
DOI：
10.1002/cssc.201900979
复制
发表时间：
2019-07
期刊：
影响因子：
8.4
通讯作者：
Ling Yin;Sibo Wang;Can Yang;Shihuan Lyu;Xinchen Wang
中科院分区：
文献类型：
--
作者：
Ling Yin;Sibo Wang;Can Yang;Shihuan Lyu;Xinchen Wang
超分子预组装是一种有效的策略，以适应聚合碳氮化物（PCN）的物理化学性质，以提高其太阳能转换性能。一种新的超分子预组织协议，它采用H2 O作为自组装介质和过硫酸钠作为改性剂，提出了调制的纹理和光电功能的PCNs有效的可见光H2的演变。揭示了过硫酸钠精确地定制具有不寻常的多孔层状结构和促进的电荷分离和迁移动力学的最终氮化碳聚合物。因此，具有优化结构的调制的PCN显示出与来自三聚氰胺而没有改性剂的类似材料相比，极大地富集了光催化H2生成的活性。
Supramolecular pre-assembly by design is an effective strategy to adapt the physicochemical properties of polymeric carbon nitrides (PCNs) to improve their solar conversion performance. A new supramolecular preorganization protocol, which employs H2 O as the self-assembly medium and sodium persulfate as a modifier, is proposed to modulate the textural and photoelectronic features of PCNs for efficient visible-light H2 evolution. Sodium persulfate is revealed to precisely tailor the final carbon nitride polymers with unusual porous layered structures and promoted charge separation and migration kinetics. As a result, the modulated PCNs with optimized structures show a greatly enriched activity for photocatalytic H2 generation compared to the analogous materials derived from melamine without the modifier.