Boron-doped diamond semiconductor electrodes: Efficient photoelectrochemical CO₂ reduction through surface modification.

ABSTRACT: Competitive hydrogen evolution and multiple proton-coupled electron transfer reactions limit photoelectrochemical CO₂ reduction in aqueous electrolyte. Here, oxygen-terminated lightly boron-doped diamond (BDD_L) thin films were synthesized as a semiconductor electron source to accelerate CO₂ reduction. However, BDD_L alone could not stabilize the intermediates of CO₂ reduction, yielding a negligible amount of reduction products. Silver nanoparticles were then deposited on BDD_L because of their selective electrochemical CO₂ reduction ability. Excellent selectivity (estimated CO:H₂ mass ratio of 318:1) and recyclability (stable for five cycles of 3 h each) for photoelectrochemical CO₂ reduction w

SUBMITTER: Roy N 

PROVIDER: S-EPMC5125091 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature