...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Carbon: An International Journal Sponsored by the American Carbon Society >Haloid acid induced carbon nitride semiconductors for enhanced photocatalytic H-2 evolution and reduction of CO2 under visible light
【24h】

Haloid acid induced carbon nitride semiconductors for enhanced photocatalytic H-2 evolution and reduction of CO2 under visible light

机译：卤代酸诱导的碳氮化物半导体用于增强的光催化H-2进化和可见光下的CO2的减少

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Hexagonal tubular carbon nitride (CN) was successfully fabricated from hexagonal rod-like supramolecular precursor. The supramolecular precursor was synthesized by hydrogen bonded self-assembly of melamine and cyanuric acid, in which cyanuric acid was from in-situ hydrolysis of melamine under haloid acid-assisted hydrothermal environment. The obtained hexagonal tubular CNs not only possess hierarchical micro-nanostructure, increased specific surface area, together with an enlarged band gap energy of 2.85 +/- 0.05 eV, but also show better light absorption capacity in visible to near-infrared region and improved separation rate of photogenerated carriers. Therefore, they exhibit enhanced photocatalytic reduction performance on water splitting to H-2, the largest hydrogen evolution rate can reach 2948.5 mu mol g(-1) h(-1), which is better than most reported CNs. Simultaneously, they also have excellent photocatalytic reduction ability on the conversion of CO2 to H-2, CO and CH4, exhibiting higher averaged electron consumption than previously reported semiconductor photocatalysts. Finally, the photocatalytic reduction mechanism over the synthetic tubular CN is proposed and discussed. (C) 2018 Elsevier Ltd. All rights reserved.
机译：六边形管状氮化物（CN）由六边形棒状超分子前体制成成功。通过三聚氰胺和氰尿酸的氢键自组装合成了超分子前体，其中氰尿酸在卤代酸辅助水热环境下原位水解了三聚氰胺。得到的六边形管状CN不仅具有等级微纳米结构，比例的表面积增加，以及扩大的带隙能量为2.85 +/- 0.05eV，而且还显示出近红外区域可见的更好的光吸收能力，并改善分离光发生载体的速率。因此，它们在水分裂上表现出增强的光催化还原性能至H-2，最大的氢进化速率可以达到2948.5μmolg（-1）H（-1），这优于大多数报道的CNS。同时，它们还具有优异的光催化还原能力，用于转化CO 2至H-2，CO和CH4，表现出比先前报道的半导体光催化剂更高的均线电子消耗。最后，提出并讨论了合成管状CN上的光催化还原机制。 （c）2018年elestvier有限公司保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号