DEGRADATION OF HUMIC ACID IN WATER BY ULTRAVIOLET PHOTOCATALYSIS OF TiO<sub>2</sub>/GO COMPOSITE NANOMATERIALS

CHEN Jun-wei; LI Li-li; FANG Zhi-huang; YE Ling-fen; ZHENG Jia-hui; WANG Fei-feng

doi:10.13205/j.hjgc.202008015

Volume 38 Issue 8

Nov. 2020

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2020 > 38(8): 89-95

CHEN Jun-wei, LI Li-li, FANG Zhi-huang, YE Ling-fen, ZHENG Jia-hui, WANG Fei-feng. DEGRADATION OF HUMIC ACID IN WATER BY ULTRAVIOLET PHOTOCATALYSIS OF TiO2/GO COMPOSITE NANOMATERIALS[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(8): 89-95. doi: 10.13205/j.hjgc.202008015

Citation:

CHEN Jun-wei, LI Li-li, FANG Zhi-huang, YE Ling-fen, ZHENG Jia-hui, WANG Fei-feng. DEGRADATION OF HUMIC ACID IN WATER BY ULTRAVIOLET PHOTOCATALYSIS OF TiO₂/GO COMPOSITE NANOMATERIALS[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(8): 89-95. doi: 10.13205/j.hjgc.202008015

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DEGRADATION OF HUMIC ACID IN WATER BY ULTRAVIOLET PHOTOCATALYSIS OF TiO₂/GO COMPOSITE NANOMATERIALS

doi: 10.13205/j.hjgc.202008015

1. College of Environmental Science and Engineering, Fujian Normal University, Fuzhou 350007, China;
2. Key Laboratory of Resource Cycle and Pollution Control of Fujian Province, Fuzhou 350007, China;
3. Fujian Academy of Building Research Institute Co., Ltd, Fuzhou 350028, China

Received Date: 2019-05-27

Abstract

Abstract

In this paper, TiO₂/GO composite photocatalysts were prepared through sol-gel method by using butyl titanate and different loads of graphene oxide as precursors, at the optimal calcination temperature (350℃). The structure and properties of TiO₂/GO nanomaterials were characterized by SEM, XRD, Raman, FT-IR, TGA and BET. The degradation characteristic of humic acid (HA) in water by composite materials under UV light were analyzed. The results showed that the particle size of TiO₂/GO composite catalyst was decreased, while the specific surface area was increased, the agglomeration effect was reduced and the photocatalytic efficiency was improved, with the increase of GO loading ratio. The two characteristic peaks of 1350 cm^-1 and 1600 cm^-1 in Raman spectrum indicated that the GO was successfully loaded in TiO₂ nanomaterial, and the crystal type was mainly anatase. The composite material with 3%GO loaded performed best. When TiO₂/3%GO dosage was 0.5 g/L and the initial HA concentration in water was 10 mg/L, the degradation rate under ultraviolet light reached 84.7% after 1 h of radiation, and the degradation rate constant was 0.0313 min^-1.
- TiO₂,
- GO,
- nanomaterial,
- ultraviolet photocatalysis,
- humic acid

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References(28)

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