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- Title
Highly Efficient Photocatalytic Degradation of Dyes by a Copper–Triazolate Metal–Organic Framework.
- Authors
Liu, Chen‐Xia; Zhang, Wen‐Hua; Wang, Nan; Guo, Penghu; Muhler, Martin; Wang, Yuemin; Lin, Shiru; Chen, Zhongfang; Yang, Guang
- Abstract
A copper(I) 3,5‐diphenyltriazolate metal–organic framework (CuTz‐1) was synthesized and extensively characterized by using a multi‐technique approach. The combined results provided solid evidence that CuTz‐1 features an unprecedented Cu5tz6 cluster as the secondary building unit (SBU) with channels approximately 8.3 Å in diameter. This metal–organic framework (MOF) material, which is both thermally and chemically (basic and acidic) stable, exhibited semiconductivity and high photocatalytic activity towards the degradation of dyes in the presence of H2O2. Its catalytic performance was superior to that of reported MOFs and comparable to some composites, which has been attributed to its high efficiency in generating.OH, the most active species for the degradation of dyes. It is suggested that the photogenerated holes are trapped by CuI, which yields CuII, the latter of which behaves as a catalyst for a Fenton‐like reaction to produce an excess amount of.OH in addition to that formed through the scavenging of photogenerated electrons by H2O2. Furthermore, it was shown that a dye mixture (methyl orange, methyl blue, methylene blue, and rhodamine B) could be totally decolorized by using CuTz‐1 as a photocatalyst in the presence of H2O2 under the irradiation of a Xe lamp or natural sunlight. In the frame: A thermally and chemically stable CuI–triazolate metal–organic framework (CuTz‐1) was prepared and demonstrated to exhibit high photocatalytic activity towards the degradation of dyes in the presence of H2O2 (see figure for dye decolorization). CuTz‐1 could be used as a catalyst for at least four cycles without significant change to the crystallinity and catalytic activity.
- Subjects
PHOTOCATALYSIS; PHOTOCATALYSTS; METAL-organic frameworks; NANOPARTICLES; CRYSTALLINITY
- Publication
Chemistry - A European Journal, 2018, Vol 24, Issue 63, p16804
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201803306