Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 26, Issue 29, Pages 30268-30278Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-019-06174-y
Keywords
Hierarchical porous carbon; Hydrochar; Atrazine; Environmental remediation
Categories
Funding
- National Key R D Project [2016YFD0800201, 2017YFD0801103]
- special project to guide the development of local science and technology by the central government [ZY18A05]
- National Natural Science Fund for Distinguished Young Scholars [41625002]
- Second Batch of National 10,000 Person Plan in 2016
- MOA Modern Agricultural Talents Support Project, Application Technology Research and Development Projects of Harbin [2016RAXXJ103]
- Heilongjiang Provincial Key Laboratory of Soil Protection and Remediation
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The excellent hierarchical porous carbon was fabricated from corn straw-derived hydrochar by chemical activation using potassium oxalate (K2C2O4). SEM, BET, XPS, XRD, and Raman analysis were carried out for the characterization of the as-obtained samples. The morphology of the as-obtained porous carbon with hierarchical porous structures is made up of a large number of nano-particle aggregates and some nanosheet-like structures, possessing a super-large specific surface area (SSA, up to 2523 m(2) g(-1)) with a large total pore volume of 1.464 cm(3) g(-1). The as-fabricated carbon material rapidly removes atrazine in the first 3 h at the initial concentration of 20 mg L-1 with an adsorption efficiency of 93.6%, which is faster and better than other representative materials reported previously. The acidic conditions are favorable for the atrazine adsorption onto the porous carbon. An efficient adsorbent was fabricated for environmental remediation, and in-depth insights into the interface mechanism between hierarchical porous carbon and atrazine are proposed. In addition, 95% of the adsorption capacity of MPC-1:3 can be recovered by simple annealing treatment.
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