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Efficient photocatalytic fixation of N2 by KOH treated g-C3N4

Abstract

To develop N2 photo-fixation under mild conditions is challenging. One reason for low efficiency is the poor reactivity between water and photocatalysts. Herein, C3N4 after KOH etching were used as the efficiency photocatalyst and CH3OH was firstly introduced as proton source. The photocatalyst presented high ammonia evolution rate of 3.632 mmol g-1 h-1 and achieved apparent quantum yield of 21.5% at ~420 nm. Except for the role of reacting with holes to accelerate the production and transfer of the electrons, the CH3OH also promoted the solubility of N2 and provided the proton to the activated N2. The CH3OH system should be instructive for a better understanding to proton-enhanced photocatalysis.

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Publication details

The article was received on 06 Nov 2017, accepted on 09 Jan 2018 and first published on 09 Jan 2018


Article type: Paper
DOI: 10.1039/C7TA09762J
Citation: J. Mater. Chem. A, 2018, Accepted Manuscript
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    Efficient photocatalytic fixation of N2 by KOH treated g-C3N4

    X. Li, X. Sun, L. Zhang, S. Sun and W. Wang, J. Mater. Chem. A, 2018, Accepted Manuscript , DOI: 10.1039/C7TA09762J

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