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Sonoprecipitation fabrication of enhanced electron transfer Cu(OH)2/g-C3N4 nanophotocatalyst with promoted H2-Production activity under visible light irradiation

Author

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  • Mahzoon, Saeed
  • Haghighi, Mohammad
  • Nowee, Seyed Mostafa

Abstract

A series of Cu(OH)2/g-C3N4 photocatalysts were fabricated via precipitation and sonoprecipitation. Various physicochemical and electrochemical techniques were employed to investigate the physical and optical properties of the samples, while their photocatalytic performance was studied based on the water splitting. Based on the observations, Cu(OH)2 was nominated as an stable and highly efficient non-precious cocatalyst for photocatalytic H2 generation. 4Cu(OH)2/C3N4(U) sample demonstrated the highest performance (187 μmol/h/g) among the other samples with various loading of Cu(OH)2 which is 31 times higher than pure C3N4. This enhancement was because of the important role of Cu(OH)2 as electron traps and active sites. Additionally, the photoactivity of the sono-synthesized photocatalyst was significantly higher than the one synthesized by precipitation method by 67%. The findings confirmed the promoting influence of ultrasound irradiation on providing well intimate cocatalyst-semiconductor interfacial contact, higher surface area and better dispersion of cocatalysts. This could facilitate the efficient transfer of electrons to cocatalyst and decrease charge carriers recombination where supported by PL, EIS and transient photocurrent results. This study addresses the sonochemical method as a promised rout for fabrication of a closely contact interface which is a key parameter to achieve more efficient noble metal free cocatalysts.

Suggested Citation

  • Mahzoon, Saeed & Haghighi, Mohammad & Nowee, Seyed Mostafa, 2020. "Sonoprecipitation fabrication of enhanced electron transfer Cu(OH)2/g-C3N4 nanophotocatalyst with promoted H2-Production activity under visible light irradiation," Renewable Energy, Elsevier, vol. 150(C), pages 91-100.
    • Handle: RePEc:eee:renene:v:150:y:2020:i:c:p:91-100
    DOI: 10.1016/j.renene.2019.12.135
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    References listed on IDEAS

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    1. Mahzoon, Saeed & Nowee, Seyed Mostafa & Haghighi, Mohammad, 2018. "Synergetic combination of 1D-2D g-C3N4 heterojunction nanophotocatalyst for hydrogen production via water splitting under visible light irradiation," Renewable Energy, Elsevier, vol. 127(C), pages 433-443.
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    Cited by:

    1. Mojaddami, Majdoddin & Simchi, Abdolreza, 2020. "Robust water splitting on staggered gap heterojunctions based on WO3∖WS2–MoS2 nanostructures," Renewable Energy, Elsevier, vol. 162(C), pages 504-512.
    2. Belessiotis, George V. & Kontos, Athanassios G., 2022. "Plasmonic silver (Ag)-based photocatalysts for H2 production and CO2 conversion: Review, analysis and perspectives," Renewable Energy, Elsevier, vol. 195(C), pages 497-515.
    3. Vinoth, S. & Pandikumar, A., 2021. "Ni integrated S-gC3N4/BiOBr based Type-II heterojunction as a durable catalyst for photoelectrochemical water splitting," Renewable Energy, Elsevier, vol. 173(C), pages 507-519.
    4. Pan, Jiaqi & Liu, Yanyan & Ou, Wei & Li, Shi & Li, Hongli & Wang, Jingjing & Song, Changsheng & Zheng, Yingying & Li, Chaorong, 2020. "The photocatalytic hydrogen evolution enhancement of the MoS2 lamellas modified g-C3N4/SrTiO3 core-shell heterojunction," Renewable Energy, Elsevier, vol. 161(C), pages 340-349.

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    More about this item

    Keywords

    Sonoprecipitation; Nanophotocatalyst; Non-precious cocatalyst; Water splitting; H2 evolution;
    All these keywords.

    JEL classification:

    • H2 - Public Economics - - Taxation, Subsidies, and Revenue

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