基本信息来源于合作网站,原文需代理用户跳转至来源网站获取       
摘要:
Atomically dispersed metal has gained much attention because of the new opportunities they offer in catalysis.However,it is still crucial to understand the mechanism of single-atom catalysis at molecular level for expanding them to other more difficult catalytic reactions,such as ammonia synthesis from nitrogen.In fact,developing ammonia synthesis under ambient conditions to overcome the high energy consumption in well-established Haber-Bosch process has fascinated scientists for many years.Herein,we demonstrate that single Cu atom yields facile valence-electron isolation from the conjugated π electron cloud of p-CN.Electron spin resonance measurements reveal that these isolated valence electrons can be easily excited to generate free electrons under photo-illumination,thus inducing high efficient photo-induced ammonia synthesis under ambient conditions.The NH3 producing rate of copper modified carbon nitride (Cu-CN) reached 186 μmol g-1 h-1 under visible light irradiation with the quantum efficiency achieved 1.01% at 420 nm monochromatic light.This finding surely offers a model to open up a new vista for the ammonia synthesis at gentle conditions.The introduction of single atom to isolate the valence electron also represents a new paradigm for many other photocatalytic reactions,since the most photoinduced processes have been successfully exploited sharing the same origin.
推荐文章
期刊_丙丁烷TDLAS测量系统的吸收峰自动检测
带间级联激光器
调谐半导体激光吸收光谱
雾剂检漏 中红外吸收峰 洛伦兹光谱线型
期刊_联合空间信息的改进低秩稀疏矩阵分解的高光谱异常目标检测
高光谱图像
异常目标检测 低秩稀疏矩阵分解 稀疏矩阵 残差矩阵
内容分析
关键词云
关键词热度
相关文献总数  
(/次)
(/年)
文献信息
篇名 Single atom accelerates ammonia photosynthesis
来源期刊 中国科学:化学(英文版) 学科
关键词
年,卷(期) 2018,(9) 所属期刊栏目
研究方向 页码范围 1187-1196
页数 10页 分类号
字数 语种 英文
DOI
五维指标
传播情况
(/次)
(/年)
引文网络
引文网络
二级参考文献  (0)
共引文献  (0)
参考文献  (6)
节点文献
引证文献  (0)
同被引文献  (0)
二级引证文献  (0)
2005(1)
  • 参考文献(1)
  • 二级参考文献(0)
2006(1)
  • 参考文献(1)
  • 二级参考文献(0)
2013(1)
  • 参考文献(1)
  • 二级参考文献(0)
2014(1)
  • 参考文献(1)
  • 二级参考文献(0)
2015(1)
  • 参考文献(1)
  • 二级参考文献(0)
2016(1)
  • 参考文献(1)
  • 二级参考文献(0)
2018(0)
  • 参考文献(0)
  • 二级参考文献(0)
  • 引证文献(0)
  • 二级引证文献(0)
引文网络交叉学科
相关学者/机构
期刊影响力
中国科学:化学(英文版)
月刊
1674-7291
11-5839/O6
16开
北京东黄城根北街16号
1950
eng
出版文献量(篇)
4060
总下载数(次)
0
总被引数(次)
11421
  • 期刊分类
  • 期刊(年)
  • 期刊(期)
  • 期刊推荐
论文1v1指导