化工新型材料

化工新型材料 ›› 2024, Vol. 52 ›› Issue (9) : 180-188. DOI: 10.19817/j.cnki.issn1006-3536.2024.09.028

科学研究

生物炭热解温度对TiO₂/生物炭复合材料光催化降解甲基橙的影响

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Effect of pyrolysis temperature of biochar on photocatalytic degradation of methyl orange by TiO₂/biochar composites

Liang Shengrong^1,2, An Mingze^2,3, Xia Sainan^1,2, Qin Yixue^1,2, Xu Guomin^1,2,3

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Received
2023-05-19
Issue Date	Revised Date
2024-09-29	2023-05-19

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摘要

以热解法制备不同温度的玉米秸秆生物炭(BC-i)(i=400℃、500℃、600℃、700℃、800℃和900℃),并通过超声辅助真空浸渍法制备了一系列TiO₂/生物炭复合材料(TBC-i)。结果表明:TBC-i光催化活性的提高可归因于生物炭良好的结构特性、BC与TiO₂之间增强的化学相互作用以及促进的光生电子-空穴的分离和转移效率。TBC-i的光催化活性均高于纯TiO₂,TBC-800表现出最佳的光催化活性,在催化剂投加量为7g/L时,TBC-800催化剂经模拟日光照射270min后对50mg/L MO的去除率为93.02%。TBC-i复合材料的制备在一定程度上为模拟有机污染物在太阳光下的降解提供了思路。

Abstract

Corn straw biochar (BC-i) was prepared by pyrolysis at different temperatures (i=400℃,500℃,600℃,700℃,800℃ and 900℃),and a series of TiO₂/biochar composites (TBC-i) were prepared by ultrasonic-assisted vacuum impregnation.The results showed that the improvement of photocatalytic activity of TBC-i could be attributed to the excellent structural properties of biochar,the enhanced chemical interaction between BC and TiO₂ as well as the promoted separation and transfer efficiency of photogenerated electrons and holes.The photocatalytic activity of TBC-i was higher than that of pure TiO₂,and TBC-800 exhibited the best photocatalytic activity.When the catalyst dosage was 7g/L,the removal rate of 50mg/L MO by TBC-800 catalyst after simulated sunlight irradiation for 270min was 93.02%.The successful preparation of TBC-i composites provided an idea for simulating the degradation of organic pollutants in sunlight to some extent.

关键词

TiO₂/生物炭复合材料 / 生物炭热解温度 / 甲基橙 / 光催化降解

Key words

TiO₂/biochar composites / biochar pyrolysis temperatures / methyl orange / photocatalytic degradation

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生物炭热解温度对TiO₂/生物炭复合材料光催化降解甲基橙的影响[J]. 化工新型材料, 2024, 52(9): 180-188 DOI:10.19817/j.cnki.issn1006-3536.2024.09.028

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参考文献

原文顺序 | 出版日期 | 本文引用

[1] Song C,Chen K,Chen M,et al.Sequential combined adsorption and solid-phase photocatalysis to remove aqueous organic pollutants by H₃PO₄-modified TiO₂ nanoparticles anchored on biochar[J].Journal of Water Process Engineering,2022,45:102467.
[2] Raj A,Yadav A,Arya S,et al.Preparation,characterization and agri applications of biochar produced by pyrolysis of sewage sludge at different temperatures[J].Science of the Total Environment,2021,795:148722.
[3] Lazarotto J S,de Lima Brombilla V,Silvestri S,et al.Conversion of spent coffee grounds to biochar as promising TiO₂ support for effective degradation of diclofenac in water[J].Applied Organometallic Chemistry,2020,34(12):e6001.
[4] He Y,Wang Y,Hu J,et al.Photocatalytic property correlated with microstructural evolution of the biochar/ZnO composites[J].Journal of Materials Research and Technology,2021,11:1308-1321.
[5] Guo M,Xiang H,Tang S,et al.Effect of pyrolysis temperature on structure and photocatalytic properties of biochar-coupled BiVO₄[J].Journal of Environmental Chemical Engineering,2022,10(2):107255.
[6] Zhang H,Wang Z,Li R,et al.TiO₂ supported on reed straw biochar as an adsorptive and photocatalytic composite for the efficient degradation of sulfamethoxazole in aqueous matrices[J].Chemosphere,2017,185:351-360.
[7] Qin J,Chen Q,Sun M,et al.Pyrolysis temperature-induced changes in the catalytic characteristics of rice husk-derived biochar during 1,3-dichloropropene degradation[J].Chemical Engineering Journal,2017,330:804-812.
[8] Zhao D,Zong W,Fan Z,et al.Synthesis of carbon-doped nanosheets m-BiVO₄ with three-dimensional (3D) hierarchical structure by one-step hydrothermal method and evaluation of their high visible-light photocatalytic property[J].Journal of Nanoparticle Research,2017,19:1-16.
[9] Fazal T,Razzaq A,Javed F,et al.Integrating adsorption and photocatalysis:a cost effective strategy for textile wastewater treatment using hybrid biochar-TiO₂ composite[J].Journal of Hazardous Materials,2020,390:121623.
[10] 陆丽丽,单锐,何明阳.新型TiO₂/生物炭复合催化剂光催化降解甲基橙[J].太阳能学报,2021,42(4):32.
[11] Li B,Zhao Z,Gao F,et al.Mesoporous microspheres composed of carbon-coated TiO₂ nanocrystals with exposed {0 0 1} facets for improved visible light photocatalytic activity[J].Applied Catalysis B:Environmental,2014,147:958-964.
[12] Wu X,Yin S,Dong Q,et al.Synthesis of high visible light active carbon doped TiO₂ photocatalyst by a facile calcination assisted solvothermal method[J].Applied Catalysis B:Environmental,2013,142:450-457.
[13] Wang G,Zhang W,Li J,et al.Carbon quantum dots decorated BiVO₄ quantum tube with enhanced photocatalytic performance for efficient degradation of organic pollutants under visible and near-infrared light[J].Journal of Mathematical Sciences,2019,54:6488-6499.
[14] Wu C,Chen R,Ma C,et al.Construction of upconversion nitrogen doped graphene quantum dots modified BiVO₄ photocatalyst with enhanced visible-light photocatalytic activity[J].Ceramics International,2019,45(2):2088-2096.
[15] Jiang Z,Wei W,Mao D,et al.Silver-loaded nitrogen-doped yolk-shell mesoporous TiO₂ hollow microspheres with enhanced visible light photocatalytic activity[J].Nanoscale,2015,7(2):784-797.
[16] Cheng C,Tan X,Lu D,et al.Carbon-dot-sensitized,nitrogen-doped TiO₂ in mesoporous silica for water decontamination through nonhydrophobic enrichment-degradation mode[J].A European Journal,2015,21(49):17944-17950.
[17] Liu S,Peng S,Zhang B,et al.Effects of biochar pyrolysis temperature on thermal properties of polyethylene glycol/biochar composites as shape-stable biocomposite phase change materials[J].RSC Advances,2022,12(16):9587-9598.
[18] Geng A,Xu L,Gan L,et al.Using wood flour waste to produce biochar as the support to enhance the visible-light photocatalytic performance of BiOBr for organic and inorganic contaminants removal[J].Chemosphere,2020,250:126291.
[19] 李建会,杨春梅,张彩凤,等.ZnO/BiOBr复合材料制备及可见光催化降解RhB性能研究[J].光子学报,2022,51(2):0216001.
[20] Li S,Ng Y H,Zhu R,et al.In situ construction of elemental phosphorus nanorod-modified TiO₂ photocatalysts for efficient visible-light-driven H₂ generation[J].Applied Catalysis B:Environmental,2021,297:120412.