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  1,2,4-Triazole-Based Approach to Noble-Metal-Free Visible-Light Driven Water Splitting over Carbon Nitrides

Dontsova, D., Fettkenhauer, C., Papaefthimiou, V., Schmidt, J., & Antonietti, M. (2016). 1,2,4-Triazole-Based Approach to Noble-Metal-Free Visible-Light Driven Water Splitting over Carbon Nitrides. Chemistry of Materials, 28(3), 772-778. doi:10.1021/acs.chemmater.5b03722.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-6626-8 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-0C4A-8
Genre: Journal Article

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Dontsova, Dariya1, Author              
Fettkenhauer, Christian1, Author              
Papaefthimiou, Vasiliki, Author
Schmidt, Johannes, Author              
Antonietti, Markus2, Author              
Affiliations:
1Dariya Dontsova, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1933288              
2Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863321              

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 Abstract: MoS2/Co2O3/poly(heptazine imide) composite photocatalysts which are active in both noble-metal-free water reduction and water oxidation half reactions upon irradiation with visible light were synthesized by a one-step procedure. Here, the LiCl/KCl eutectic melt was used as a high-temperature solvent; 3-amino-1,2,4-triazole-5-thiol simultaneously acts as a carbon nitride precursor, sulfur source, and reducing agent for Mo5+, while MoCl5 was added as a metal source for MoS2 nanoparticles being active centers for the water reduction reaction. Water oxidation centers could be created using the rich complexation chemistry of 1,2,4-triazoles. Namely, cobalt species were introduced into carbon nitride network using Co3[3,5-diamino-1,2,4-triazole]6 complex as a dopant, prepared in a separate step. The developed method enables one to control the cocatalysts? loading and tune the dimensions of MoS2 NPs. The materials reported here show 10% of the efficiency of a reference Pt/mesoporous graphitic carbon nitride composite in hydrogen evolution, and half of the performance of the reference Co3O4/S-doped carbon nitride material, prepared by multistep synthesis, in oxygen evolution, however, in one and the same system.

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 Dates: 2016-01-072016
 Publication Status: Published in print
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 Identifiers: DOI: 10.1021/acs.chemmater.5b03722
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Title: Chemistry of Materials
  Other : Chem. Mater.
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Chemical Society
Pages: - Volume / Issue: 28 (3) Sequence Number: - Start / End Page: 772 - 778 Identifier: ISSN: 0897-4756