- Title
- Highly enhanced photocatalytic hydrogen evolution activity of graphitic carbon nitride with 3D connected mesoporous structure
- Creator
- Yang, Jae-Hun; Kim, Sungho; Kim, In Young; Lee, Jang Mee; Yi, Jiabao; Karakoti, Ajay; Joseph, Stalin; Albahily, Khalid; Vinu, Ajayan
- Relation
- ARC.FT100100970 http://purl.org/au-research/grants/nhmrc/1100970
- Relation
- Sustainable Materials and Technologies Vol. 25, Issue September 2020, no. e00184
- Publisher Link
- http://dx.doi.org/10.1016/j.susmat.2020.e00184
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2020
- Description
- In this report, we demonstrate on the preparation of mesoporous graphitic carbon nitride (gCN) with 3D porous structure using dicyandiamide as a CN precursor and KIT-6 as a template via hard-template replication method and its superior photocatalytic hydrogen evolution activity under simulated sunlight. The powder X-ray diffraction, nitrogen adsorption and near edge X-ray absorption fine structure (NEXAFS) results reveal that the prepared materials possess gCN crystal structure with ordered mesopores and a 3D porous structure and a high specific surface area (221 m2/g). UV–Vis and PL spectra show that the absorption edges of mesoporous gCNs are slightly blue-shifted and the PL intensity is remarkably suppressed. The photocatalytic hydrogen evolution activity of gCN-KIT-6 under solar simulated irradiation is 1.92 mmol·g−1 h−1 which is much higher than that of gCN with 2D mesoporous structure, gCN from silica nanoparticle and bulk nonporous gCN. This high photocatalytic activity of gCN-KIT-6 can be attributed to 3D structure and the retarded electron-hole recombination.
- Subject
- mesoporous structure; 3D structure; photocatalytic hydrogen evolution activity; simulated sunlight; SDG 7; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1435925
- Identifier
- uon:39863
- Identifier
- ISSN:2214-9937
- Language
- eng
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Goal 7: Ensure access to affordable, reliable, sustainable and modern energy
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