Erschienen in:
Chemistry – A European Journal, 24 (2018) 63, Seite 16804-16813
Sprache:
Englisch
DOI:
10.1002/chem.201803306
ISSN:
0947-6539;
1521-3765
Entstehung:
Anmerkungen:
Beschreibung:
<jats:title>Abstract</jats:title><jats:p>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 Cu<jats:sub>5</jats:sub>tz<jats:sub>6</jats:sub> 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 H<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub>. 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 <jats:bold><jats:sup>.</jats:sup></jats:bold>OH, the most active species for the degradation of dyes. It is suggested that the photogenerated holes are trapped by Cu<jats:sup>I</jats:sup>, which yields Cu<jats:sup>II</jats:sup>, the latter of which behaves as a catalyst for a Fenton‐like reaction to produce an excess amount of <jats:bold><jats:sup>.</jats:sup></jats:bold>OH in addition to that formed through the scavenging of photogenerated electrons by H<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub>. 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 H<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub> under the irradiation of a Xe lamp or natural sunlight.</jats:p>