ZnO/biochar nanocomposites via solvent free ball milling for enhanced adsorption and photocatalytic degradation of methylene blue

被引：247

作者：

Yu, Fang ^{[1
,2
]}

Tian, Fengyu ^{[1
]}

Zou, Haowen ^{[3
]}

Ye, Zihan ^{[1
]}

Peng, Chuang ^{[1
]}

Huang, Jinsheng ^{[2
]}

Zheng, Yulin ^{[2
]}

Zhang, Yue ^{[2
]}

Yang, Yicheng ^{[2
]}

Wei, Xiaoqian ^{[4
]}

Gao, Bin ^{[2
]}

机构：

[1] Wuhan Univ, Sch Resource & Environm Sci, 299 Bayi Rd, Wuhan 430072, Peoples R China

[2] Univ Florida, Dept Agr & Biol Engn, Gainesville, FL 32611 USA

[3] Zhejiang Univ Technol, Coll Environm, Hangzhou 310014, Peoples R China

[4] Nanjing Univ, Sch Chem & Chem Engn, Key Lab Mesoscop Chem MOE, Nanjing 210093, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2021年 / 415卷

关键词：

Engineered biochar; Photocatalyst; Adsorption; Photodegradation; Ball milling; Dye removal; PERSISTENT FREE-RADICALS; BIOCHAR; REMOVAL; EFFICIENT; ZNO; FABRICATION; FACILE;

D O I：

10.1016/j.jhazmat.2021.125511

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

There are challenges in developing multifunctional materials that can not only effectively adsorb but also completely eliminate organic contaminants in water. In this work, novel ZnO/biochar nanocomposites were synthesized using a facile ball-milling method. A series of characterization results showed that the ZnO nanoparticles dispersed uniformly on carbon surface within the biochar matrix. Ball milling increased the mesopores and macropores of the nanocomposites by breaking biochar and squeezing ZnO. The addition of appropriate amount of ZnO into biochar enhanced both the adsorption capacity and photocatalytic ability of the nanocomposites for methylene blue (MB) removal. When the initial concentration of MB was 160 mg/g, the nanocomposites exhibited high MB removal efficiency (up to 95.19%) under visible light through the combination of adsorption and photocatalysis. This work provides a feasible synthesis of metal oxide/biochar nanocomposites with excellent adsorption and photocatalysis properties for the treatment of organic dye wastewater.

引用

页数：8

共 38 条

[1] Influence of the surface-to-bulk defects ratio of ZnO and TiO2 on their UV-mediated photocatalytic activity [J].

Aggelopoulos, Christos A. ;

Dimitropoulos, Marinos ;

Govatsi, Aikaterini ;

Sygellou, Lamprini ;

Tsakiroglou, Christos D. ;

Yannopoulos, Spyros N. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2017, 205 :292-301

[2] A review on photocatalytic remediation of environmental pollutants and H2 production through water splitting: A sustainable approach [J].

Ahmad, Kaleem ;

Ghatak, Himadri Roy ;

Ahuja, S. M. .

ENVIRONMENTAL TECHNOLOGY & INNOVATION, 2020, 19

[3] Facile and low-cost fabrication of ZnO/biochar nanocomposites from jute fibers for efficient and stable photodegradation of methylene blue dye [J].

Chen, Mingxin ;

Bao, Chongzhuo ;

Hu, Dongwen ;

Jin, Xin ;

Huang, Qiang .

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, 2019, 139 :319-332

[4] Microwave one-pot production of ZnO/Fe3O4/activated carbon composite for organic dye removal and the pyrolysis exhaust recycle [J].

Cheng, Song ;

Chen, Quan ;

Xia, Hongying ;

Zhang, Libo ;

Peng, Jinhui ;

Lin, Guo ;

Liao, Xuefeng ;

Jiang, Xin ;

Zhang, Qi .

JOURNAL OF CLEANER PRODUCTION, 2018, 188 :900-910

[5] Nanoparticles of ZnO obtained by mechanical milling [J].

Damonte, LC ;

Zélis, LAM ;

Soucase, BM ;

Fenollosa, MAH .

POWDER TECHNOLOGY, 2004, 148 (01) :15-19

[6] Manipulation of Persistent Free Radicals in Biochar To Activate Persulfate for Contaminant Degradation [J].

Fang, Guodong ;

Liu, Cun ;

Gao, Juan ;

Dionysiou, Dionysios D. ;

Zhou, Dongmei .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2015, 49 (09) :5645-5653

[7] Mechanism of hydroxyl radical generation from biochar suspensions: Implications to diethyl phthalate degradation [J].

Fang, Guodong ;

Zhu, Changyin ;

Dionysiou, Dionysios D. ;

Gao, Juan ;

Zhou, Dongmei .

BIORESOURCE TECHNOLOGY, 2015, 176 :210-217

[8] Key Role of Persistent Free Radicals in Hydrogen Peroxide Activation by Biochar: Implications to Organic Contaminant Degradation [J].

Fang, Guodong ;

Gao, Juan ;

Liu, Cun ;

Dionysiou, Dionysios D. ;

Wang, Yu ;

Zhou, Dongmei .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2014, 48 (03) :1902-1910

[9] Relationship of the physicochemical properties of novel ZnO/biochar composites to their efficiencies in the degradation of sulfamethoxazole and methyl orange [J].

Goncalves, Mayara Gabriela ;

da Silva Veiga, Paulo Apolinario ;

Fornar, Mayara Regina ;

Peralta-Zamora, Patricio ;

Mangrich, Antonio Salvio ;

Silvestri, Siara .

SCIENCE OF THE TOTAL ENVIRONMENT, 2020, 748

[10] MOF derived ZnO/C nanocomposite with enhanced adsorption capacity and photocatalytic performance under sunlight [J].

Hu, Cuicui ;

Hu, Xiaoxia ;

Li, Rong ;

Xing, Yanjun .

JOURNAL OF HAZARDOUS MATERIALS, 2020, 385

← 1 2 3 4 →