Construction novel highly active photocatalytic H2 evolution over noble-metal-free trifunctional Cu3P/CdS nanosphere decorated g-C3N4 nanosheet

Rameshbabu, Ramachandran and Koh, Siaw Paw and Kaviyarasan, Kulandaivelu and Yaw, Chong Tak and Tiong, Sieh Kiong and Benedict, Foo and Yusaf, Talal F. and Valdés, Héctor and Kadirgama, Kumaran and Pasupuleti, Jagadeesh (2024) Construction novel highly active photocatalytic H2 evolution over noble-metal-free trifunctional Cu3P/CdS nanosphere decorated g-C3N4 nanosheet. International Journal of Hydrogen Energy, 55. pp. 592-603. ISSN 0360-3199. (Published)

Pdf
Construction novel highly active photocatalytic H2 evolution over noble-metal.pdf
Restricted to Repository staff only
Download (12MB) | Request a copy

Preview

Pdf
Construction novel highly active photocatalytic H2 evolution over noble-metal-free trifunctional Cu3P_CdS nanosphere decorated g-C3N4 nanosheet_ABS.pdf
Download (262kB) | Preview

DOI/Official URL: https://doi.org/10.1016/j.ijhydene.2023.11.212

Abstract

Hydrogen energy possesses immense potential in developing a green renewable energy system. However, a significant problem still exists in improving the photocatalytic H2 production activity of metal-free graphitic carbon nitride (g-C3N4) based photocatalysts. Here is a novel Cu3P/CdS/g-C3N4 ternary nanocomposite for increasing photocatalytic H2 evolution activity. In this study, systematic characterizations have been carried out using techniques like X-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HR-TEM), Raman spectra, UV–Vis diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy (XPS), surface area analysis (BET), electrochemical impedance (EIS), and transient photocurrent response measurements. Surprisingly, the improved 3CP/Cd-6.25CN photocatalyst displays a high H2 evolution rate of 125721 μmol h−1 g−1. The value obtained exceeds pristine g-C3N4 and Cu3P/CdS by 339.8 and 7.6 times, respectively. This could be the maximum rate of hydrogen generation for a g–C3N4–based ternary nanocomposite ever seen when exposed to whole solar spectrum and visible light (λ > 420 nm). This research provides fresh perspectives on the rational manufacture of metal-free g-C3N4 based photocatalysts that will increase the conversion of solar energy. By reusing the used 3CP/Cd/g-C3N4 photocatalyst in five consecutive runs, the stability of the catalyst was investigated, and their individual activity in the H2 production activity was assessed. To comprehend the reaction mechanisms and emphasise the value of synergy between the three components, several comparison systems are built.

Item Type:	Article
Additional Information:	Indexed by Scopus
Uncontrolled Keywords:	CdS; Energy; G-C3N4; Hydrogen evolution; Photocatalyst; Stability
Subjects:	T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General) T Technology > TJ Mechanical engineering and machinery T Technology > TL Motor vehicles. Aeronautics. Astronautics
Faculty/Division:	Faculty of Mechanical and Automotive Engineering Technology
Depositing User:	Mr Muhamad Firdaus Janih@Jaini
Date Deposited:	16 Jan 2024 06:58
Last Modified:	16 Jan 2024 06:58
URI:	http://umpir.ump.edu.my/id/eprint/40035
Download Statistic:	View Download Statistics

Actions (login required)

View Item