Details

Autor(en) / Beteiligte

• Sun, Dengrong
• Fu, Yanghe
• Liu, Wenjun
• Ye, Lin
• Wang, Dengke
• Yang, Lin
• Fu, Xianzhi
• Li, Zhaohui

Titel

Studies on Photocatalytic CO2 Reduction over NH2-Uio-66(Zr) and Its Derivatives: Towards a Better Understanding of Photocatalysis on Metal-Organic Frameworks

Ist Teil von

• Chemistry : a European journal, 2013-10, Vol.19 (42), p.14279-14285

Ort / Verlag

Weinheim: WILEY-VCH Verlag

Erscheinungsjahr

2013

Link zum Volltext

Quelle

Wiley Online Library All Journals

Beschreibungen/Notizen

• Metal–organic framework (MOF) NH2‐Uio‐66(Zr) exhibits photocatalytic activity for CO2 reduction in the presence of triethanolamine as sacrificial agent under visible‐light irradiation. Photoinduced electron transfer from the excited 2‐aminoterephthalate (ATA) to Zr oxo clusters in NH2‐Uio‐66(Zr) was for the first time revealed by photoluminescence studies. Generation of ZrIII and its involvement in photocatalytic CO2 reduction was confirmed by ESR analysis. Moreover, NH2‐Uio‐66(Zr) with mixed ATA and 2,5‐diaminoterephthalate (DTA) ligands was prepared and shown to exhibit higher performance for photocatalytic CO2 reduction due to its enhanced light adsorption and increased adsorption of CO2. This study provides a better understanding of photocatalytic CO2 reduction over MOF‐based photocatalysts and also demonstrates the great potential of using MOFs as highly stable, molecularly tunable, and recyclable photocatalysts in CO2 reduction. Higher CO2 photoreduction activity than previously studied metal–organic framework (MOF) NH2‐MIL‐125(Ti) in the presence of triethanolamine (TEOA) as the sacrificial agent under visible light is exhibited by the amino‐functionalized MOF NH2‐Uio‐66(Zr). The photoinduced electron transfer from 2‐aminoterephthalate linkers to Zr oxo clusters was revealed for the first time by photoluminescence studies, and the generated ZrIII was detected by ESR analysis (see figure).