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Study on the performance and mechanism of methylmercury removal by hydrogen substituted graphdiyne
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Hong-hu LI1, 4, *, Hua-ying LU2, Xi-yan PENG1, 4, Zhen-hua SHEN3, Miao AN1, 4, Cui JIE1, 4, Jiao-yv YANG1, 4
China Environmental Science | 2025, 45(1) : 198 - 207
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China Environmental Science | 2025, 45(1): 198-207
• Water Pollution Control •
Study on the performance and mechanism of methylmercury removal by hydrogen substituted graphdiyne
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Hong-hu LI1, 4, *, Hua-ying LU2, Xi-yan PENG1, 4, Zhen-hua SHEN3, Miao AN1, 4, Cui JIE1, 4, Jiao-yv YANG1, 4
Affiliations
  • 1.School of Information Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China
  • 2.Yichang Ecological Environment Monitoring Center of Hubei Provincial Department of Ecological Environment, Yichang 443000, China
  • 3.Yichang Three Gorges Reservoir Ecological Environment Monitoring Station, Yichang 443000, China
  • 4.Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan 430073, China
Published: 2025-01-20
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Hydrogen substituted graphdiyne (HsGDY) was synthesized through an in-situ cross-coupling reaction with triethynylbenzene as a precursor. The CH3Hg+ adsorption performance of the novel sp-hybridized carbon material HsGDY was studied in comparison with traditional sp2-hybridized carbon material graphene (GE). This work showed that HsGDY had an excellent adsorption performance for CH3Hg+, which was significantly better than GE. When the CH3Hg+ concentration was 1.25µg/L and solution pH was 7, the final removal efficiency of HsGDY with 30 mg dosage for CH3Hg+ could reach nearly 100%. An increase in ion strength, a decrease in pH and the presence of Hg2+ would to some extent inhibit the adsorption of CH3Hg+ on HsGDY due to the competitive adsorption effect. HsGDY had good regeneration performance. After 5 regeneration cycles, its CH3Hg+ removal efficiency was still above 80%. By characterization methods such as Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and density functional theory (DFT) calculations, the adsorption mechanism of CH3Hg+ onto HsGDY was thoroughly studied. The results indicated that CH3Hg+ was chemically adsorbed on the HsGDY surface, mainly due to the interaction between the acetylenic functional group and CH3Hg+.

hydrogen substituted graphdiyne  /  methylmercury  /  sp-hybridized carbon  /  acetylene bond
Hong-hu LI, Hua-ying LU, Xi-yan PENG, Zhen-hua SHEN, Miao AN, Cui JIE, Jiao-yv YANG. Study on the performance and mechanism of methylmercury removal by hydrogen substituted graphdiyne[J]. China Environmental Science, 2025 , 45 (1) : 198 -207 .
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Year 2025 volume 45 Issue 1
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  • Receive Date：2024-05-14
  • Online Date：2026-03-18
  • Published：2025-01-20
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  • Received：2024-05-14
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Affiliations
    1.School of Information Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China
    2.Yichang Ecological Environment Monitoring Center of Hubei Provincial Department of Ecological Environment, Yichang 443000, China
    3.Yichang Three Gorges Reservoir Ecological Environment Monitoring Station, Yichang 443000, China
    4.Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan 430073, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Genus		 种数
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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