Solar-driven dual-function Ag/Au@CN photocatalyst for simultaneous hydrogen production and pollutant reduction from industrial wastewater
Issued Date
2026-09-05
Resource Type
ISSN
09277757
eISSN
18734359
Scopus ID
2-s2.0-105037392281
Journal Title
Colloids and Surfaces A Physicochemical and Engineering Aspects
Volume
744
Rights Holder(s)
SCOPUS
Bibliographic Citation
Colloids and Surfaces A Physicochemical and Engineering Aspects Vol.744 (2026)
Suggested Citation
Longchin P., Hunsom M. Solar-driven dual-function Ag/Au@CN photocatalyst for simultaneous hydrogen production and pollutant reduction from industrial wastewater. Colloids and Surfaces A Physicochemical and Engineering Aspects Vol.744 (2026). doi:10.1016/j.colsurfa.2026.140605 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/116562
Title
Solar-driven dual-function Ag/Au@CN photocatalyst for simultaneous hydrogen production and pollutant reduction from industrial wastewater
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Abstract
A dual-function Ag/Au@CN photocatalyst was fast synthesized via simple thermal treatment and photodeposition for simultaneous hydrogen (H<inf>2</inf>) production and pollutant reduction from industrial wastewater under solar light irradiation. The CN photocatalyst with a co-metal decoration exhibited higher photocatalytic activity than those with a single-metal decoration and pristine CN photocatalyst. Among all co-metal decorated CN photocatalysts, the 0.13Ag/Au@CN sample achieved the highest H<inf>2</inf> production rate, approximately 95.6, 1.3, and 9.8 times higher than those of CN, Au@CN, and Ag@CN photocatalysts, respectively. This enhancement is attributed to the optimally balanced Au and Ag contents in the CN structure, which can facilitate strong light-harvesting ability, effective reaction sites, and efficient charge transport. Optimal conditions, including wastewater dilution, type and concentration of hole scavengers, and photocatalyst loading, further accelerated the photocatalytic activity. The principal reactive oxygen species (ROS) involved in photocatalytic pollutant reduction via the Ag/Au@CN photocatalyst were the superoxide (O<inf>2</inf><sup>•⁻</sup>) radicals and followed by photogenerated holes (h<sup>+</sup>). This work highlights the synthesis of an efficient dual-function photocatalyst through a simple approach for simultaneous energy production and industrial wastewater remediation under solar light irradiation, offering a sustainable strategy for industrial wastewater management.