...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ACS applied materials & interfaces >Cyclometalated Ir–Zr Metal–Organic Frameworks as Recyclable Visible-Light Photocatalysts for Sulfide Oxidation into Sulfoxide in Water
【24h】

Cyclometalated Ir–Zr Metal–Organic Frameworks as Recyclable Visible-Light Photocatalysts for Sulfide Oxidation into Sulfoxide in Water

机译：与硫化物氧化成水中的硫化物氧化的可回收可见光光催化剂

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Aerobic photo-oxidation of sulfide into sulfoxide in water is of great interest in green chemistry. In this study, three highly stable Ir(III)–Zr(IV) metal–organic frameworks (Ir–Zr MOFs), namely Zr_(6)–Irbpy (bpy is 2,2′-bipyridine), Zr_(6)–IrbpyOMe (bpyOMe is 4,4′-dimethoxy-2,2′-bipyridine), and Zr_(6)–Irphen (phen is 1,10-phenanthroline), are constructed by using [Ir(pqc)_(2)(L)_(2)]Cl complexes (where pqc is 2-phenylquinoline-4-carboxylic acid and L is an ancillary ligand bpy, bpyOMe, or phen) as linkers and Zr_(6) cluster as nodes. The constructed Ir–Zr MOFs present high catalytic activity on aerobic photo-oxidation of sulfide into sulfoxide under visible light irradiation in water at room temperature. Moreover, the reaction is high chemoselectivity and functional group tolerance. The catalyst can be readily recycled and reused at least 10 times without loss of catalytic activity. Mechanism studies demonstrate that superoxide radical is the reactive oxygen species in the sulfoxidation, which is generated by electron transfer from the excited triplet photosensitizer ~(3)[Ir–Zr-MOF]* to O_(2). The high activity of photocatalytic sulfoxidation in water may be attributed to the stabilization of the persulfoxide intermediate by hydrogen bond formation with water solvent, which accelerates the conversion of persulfoxide into sulfoxide and prevents further oxidation of sulfoxide into sulfone. This work provides a new strategy for the green synthesis of sulfoxides under ambient conditions.
机译：在水中硫化物的有氧光照氧化成亚砜对绿色化学感兴趣。在本研究中，三种高度稳定的IR（III）-ZR（IV）金属 - 有机框架（IR-ZR MOF），即Zr_（6）-irbpy（BPY是2,2'-Biphyridine），Zr_（6） - Irbpyome（Bpyome是4,4'-二甲氧基-2,2'-Bi yridine），Zr_（6） - 磷（phen是1,10-菲啉），通过使用[IR（PQC）_（2）（ l）_（2）] Cl复合物（其中PQC是2-苯基喹啉-4-羧酸，L是辅助配体BPY，BPYOME或PAN）作为链接器和ZR_（6）簇作为节点。所构建的IR-ZR MOF在室温下可见光照射下存在于硫化物的有氧光照氧化成硫化物的高催化活性。此外，反应是高化学选择性和官能团的耐受性。催化剂可以容易地再循环并重复使用至少10倍而不会损失催化活性。机制研究表明，超氧化物基团是亚磺氧化中的反应性氧物质，其通过从激发的三重态光敏剂〜（3）[IR-ZR-MOF] *至O_（2）产生的电子转移产生。在水中的光催化磺氧化的高活性可归因于通过水溶剂的氢键形成稳定过硫氧化物中间体，其加速过硫氧化物转化为亚砜，并防止亚砜进一步氧化成砜。本作品在环境条件下为亚砜的绿色合成提供了新的策略。

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