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Efficient Generation of Hydrogen Peroxide and Formate by an Organic Polymer Dots Photocatalyst in Alkaline Conditions.

ABSTRACT: A photocatalyst comprising binary organic polymer dots (Pdots) was prepared. The Pdots were constructed from poly(9,9-dioctylfluorene-alt-benzothiadiazole), as an electron donor, and 1-[3-(methoxycarbonyl)propyl]-1-phenyl-[6.6]C₆₁ , as an electron acceptor. The photocatalyst produces H₂ O₂ in alkaline conditions (1 M KOH) with a production rate of up to 188 mmol h^-1 g^-1 . The external quantum efficiencies were 30 % (5 min) and 14 % (75 min) at 450 nm. Furthermore, photo-oxidation of methanol by Pdots, followed by a disproportionation reaction and an oxidation reaction, produced the high-value chemical formate. On the basis of various spectroscopic and electrochemical measurements, the photophysical processes of the system were studied in detail and a reaction mechanism was proposed.

SUBMITTER: Wang S

PROVIDER: S-EPMC9324198 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature

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Efficient Generation of Hydrogen Peroxide and Formate by an Organic Polymer Dots Photocatalyst in Alkaline Conditions.

Wang Sicong S Cai Bin B Tian Haining H

Angewandte Chemie (International ed. in English) 20220405 23

A photocatalyst comprising binary organic polymer dots (Pdots) was prepared. The Pdots were constructed from poly(9,9-dioctylfluorene-alt-benzothiadiazole), as an electron donor, and 1-[3-(methoxycarbonyl)propyl]-1-phenyl-[6.6]C61 , as an electron acceptor. The photocatalyst produces H2 O2 in alkaline conditions (1 M KOH) with a production rate of up to 188 mmol h-1 g-1 . The external quantum efficiencies were 30 % (5 min) and 14 % (75 min) ...[more]

PMID: 35299290

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