Photoelectrochemical Reduction of Carbon Dioxide on Quantum-Dot-Modified Electrodes by Electric Field Directed Layer-by-Layer Assembly Methodology

被引：31

作者：

Guzman, Diego ^{[1
]}

Isaacs, Mauricio ^{[1
]}

Osorio-Roman, Igor ^{[1
]}

Garcia, Macarena ^{[2
]}

Astudino, Jason ^{[2
]}

Ohlbaum, Macarena ^{[1
]}

机构：

[1] Pontificia Univ Catolica Chile, Fac Quim, Santiago 7820436, Chile

[2] Univ Santiago Chile, Fac Quim & Biol, Santiago 9170022, Chile

来源：

ACS APPLIED MATERIALS & INTERFACES | 2015年 / 7卷 / 36期

关键词：

quantum dots; carbon dioxide; layer-by-layer; photoelectrochemical reduction; polycations; ELECTROCHEMICAL REDUCTION; PHOTOCATALYTIC REDUCTION; CO2; REDUCTION; TETRAAMINOPHTHALOCYANINE; OXIDATION; NITRITE; CDSE;

D O I：

10.1021/acsami.5b05722

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The photoelectrocatalytic reduction of CO2 on ITO-modified electrodes, with electrostatic assemblies (polycations/quantum dots) (polycations = poly diallyldimethylammonium, PDDA, and poly(2-trimethylammonium)ethyl methacrylate, PMAEMA)), is described in the present work. Nanoparticles of CdTe (5.6 nm) were incorporated through an electric field directed layer-by-layer assembly method on ITO electrodes. Modified surfaces were active toward the reduction of CO2 at -400 mV vs Ag/AgCl; the activity of ITO(PMAEMA/QDs)(6) electrodes was enhanced by 300 mV under irradiation conditions. The photoelectrocatalytic effect was associated with the structure of the polycation and its influence in the assembly. Reaction products at -450 mV were H-2, CO, CH3OH, and HCOH.

引用

页码：19865 / 19869

页数：5

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