Enhancement of the visible-light absorption and charge mobility in a zinc porphyrin polymer/g-C3N4 heterojunction for promoting the oxidative coupling of amines

Functionalized UiO-66(Ce) for photocatalytic organic transformation: the role of active sites modulated by ligand functionalization

“…Subsequently, by adding BA in the testing process, a new EPR signal 67 ascribed to BA cation radicals is observed in Fig. 5e.…”

Cu3(BTC)2 nanoflakes synthesized in an ionic liquid/water binary solvent and their catalytic properties

“…33,34 The reaction rate of 3-nitrobenzyl alcohol is lower than that of 4-methylbenzyl alcohol because the strong electron-withdrawing group is unfavorable for the oxidation reaction. 35,36 For m -Cu 3 (BTC) 2 , the conversions of the three aldehydes are 63%, 57% and 47% under the same conditions, respectively. It is worth noting that the aldehyde yields catalyzed by the reported Cu 3 (BTC) 2 catalyst were 62%, 65% and 10% for these three alcohols, respectively, even for a long reaction time of 22 h under an oxygen atmosphere.…”

Unsaturated NiII Centers Mediated the Coordination Activation of Benzylamine for Enhancing Photocatalytic Activity over Ultrathin Ni MOF-74 Nanosheets

“…The radical signal cannot be observed under dark conditions in either case, suggesting that the oxidative coupling of BA is a photocatalytic process. Upon irradiation, the N-containing free radicals are gradually evolved and eventually trapped by DMPO under a nitrogen atmosphere to exhibit the ESR signals with 1:1:1:1:1:1 sextet peaks (•),56 confirming the generation of BA cation free radicals from BA oxidization by holes. Upon the addition of O 2 , a strong ESR signal of DMPO-O 2•− radicals (⧫) is acquired, suggesting that both O 2…”