Citation: Caihong ZHANG, Kexin WU, Zikang CAO, Hongji LIU, Luyao HAN, Yan YU, Li LI. Photocatalytic degradation and hydrogen evolution performance of the broad-spectrum response composite material PW₁₂/CdS modified by carbon quantum dots[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(8): 1733-1750. doi: 10.11862/CJIC.20260055 shu

Photocatalytic degradation and hydrogen evolution performance of the broad-spectrum response composite material PW₁₂/CdS modified by carbon quantum dots

Caihong ZHANG ¹ ,
Kexin WU ² ,
Zikang CAO ¹ ,
Hongji LIU ² ,
Luyao HAN ² ,
Yan YU ^{1, 2,,} ,
Li LI ^{1, 2,,}

1.
College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar, Heilongjiang 161006, China
2.
College of Materials Science and Engineering, Qiqihar University, Qiqihar, Heilongjiang 161006, China

Corresponding author: Yan YU, zglnasyy@163.com Li LI, qqhrlili@126.com
Received Date: 15 February 2026
Revised Date: 8 July 2026

Figures(14)

Aiming at the problem of water pollution, a broad-spectrum response composite material CQDs/PW₁₂/CdS modified by carbon quantum dots (CQDs) was prepared via a microwave-assisted hydrothermal method using glucose as the carbon source, cadmium sulfide (CdS) and phosphotungstic acid (PW₁₂) as precursors. The photocatalytic mechanism of CQDs/PW₁₂/CdS is more inclined towards the Z-scheme heterojunction. The optimized CQDs/PW₁₂/CdS heterojunction composites achieved 93.01% photodegradation efficiency of rhodamine B (RhB) at 120 min of simulated sunlight irradiation, and they also exhibited a favorable degrading effect on common dyes and antibiotics in water. Using lactic acid as the sacrificial reagent, the photocatalytic hydrogen production activity of the developed photocatalyst was evaluated under simulated sunlight irradiation. According to the experimental results, after 8 h of irradiation, the CQDs/PW₁₂/CdS composite material showed the highest H₂ production rate (12.34 mmol·g^-1), which was six times that of the monomer CdS (2.05 mmol·g^-1). The enhancement of photocatalytic activity is attributed to the effective separation of photogenerated charges caused by the anisotropic junctions in the CQDs/PW₁₂/CdS system.
- photocatalytic degradation,
- hydrogen evolution,
- polyoxometalates,
- carbon quantum dots
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Photocatalytic degradation and hydrogen evolution performance of the broad-spectrum response composite material PW12/CdS modified by carbon quantum dots

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通讯作者: 陈斌, bchen63@163.com

Photocatalytic degradation and hydrogen evolution performance of the broad-spectrum response composite material PW₁₂/CdS modified by carbon quantum dots