Preparation and visible light catalytic performance of g-C<sub>3</sub>N<sub>4</sub>/POPs heterojunction

GUO Jiayun; FU Yangjie; ZHANG Kejie; JI Yun; YANG Juan; WANG Qi

doi:10.13801/j.cnki.fhclxb.20220325.001

Volume 40 Issue 2

Feb. 2023

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GUO Jiayun, FU Yangjie, ZHANG Kejie, et al. Preparation and visible light catalytic performance of g-C3N4/POPs heterojunction[J]. Acta Materiae Compositae Sinica, 2023, 40(2): 904-910. doi: 10.13801/j.cnki.fhclxb.20220325.001

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GUO Jiayun, FU Yangjie, ZHANG Kejie, et al. Preparation and visible light catalytic performance of g-C₃N₄/POPs heterojunction[J]. Acta Materiae Compositae Sinica, 2023, 40(2): 904-910. doi: 10.13801/j.cnki.fhclxb.20220325.001

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Preparation and visible light catalytic performance of g-C₃N₄/POPs heterojunction

doi: 10.13801/j.cnki.fhclxb.20220325.001

GUO Jiayun¹,
FU Yangjie¹,
ZHANG Kejie¹,
JI Yun¹,
YANG Juan³,
WANG Qi^{1, 2
,
,}

1.
School of Environment Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
2.
Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, China
3.
College of Safety and Engineering, Henan Polytechnic University, Zhengzhou 450018, China

Received Date: 2022-01-10
Accepted Date: 2022-03-19
Rev Recd Date: 2022-03-10

Available Online: 2022-03-28

Publish Date: 2023-02-15

Abstract

Abstract

As a promising environmental remediation technology, the development of efficient and stable photocatalysts with visible light response is one of the important studies in photocatalysis technology. In this work, g-C₃N₄/porous organic polymers (POPs) composite photocatalysts were prepared via atmospheric solvothermal method. Different ratios of g-C₃N₄ were in-situ loaded on conjugated porous organic polymers TAPB-DMTP POP synthesized with 1, 3, 5-tris(4-aminophenyl) benzene (TAPB) and 2, 5-dimethoxybenzene-1, 4-diformaldehyde (DMTP) as monomers. The chemical structure and optical properties of g-C₃N₄/POPs materials were characterized by XRD, FTIR, BET, TGA, UV-Vis DRS, current-time (i-t) and EIS methods. Cr(VI) was selected as the model pollutant, the photocatalytic reduction activities of g-C₃N₄/POPs photocatalysts with different g-C₃N₄ loading ratios were explored under visible light conditions, and the effects of pH value, catalyst dosage and substrate concentration were further investigated. The results shows that g-C₃N₄/POP-2 exhibits the best photocatalytic reduction performance at pH=2 with the reduction efficiency of 99.1% after 30 min of visible illumination. The reduction efficiency of Cr(VI) is significantly improved over g-C₃N₄/POP-2 compared with pure g-C₃N₄ and TAPB-DMTP POP, and the fitted first-order kinetics rate are 22.0 times and 2.2 times that of g-C₃N₄ and TAPB-DMTP POP, respectively. This composite also exhibits excellent photocatalytic stability as the Cr(VI) reduction rate reaches more than 90% after five cycles.
- porous organic polymers (POPs),
- g-C₃N₄,
- heterojunction,
- photocatalytic,
- Cr(VI) reduction
Long Abstrsct
Innovation Points

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References(22)

References

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