Graphene: A Reusable Substrate for Unprecedented Adsorption of Pesticides

被引：169

作者：

Maliyekkal, Shihabudheen M. ^{[1
,2
]}

Sreeprasad, T. S. ^{[1
]}

Krishnan, Deepti ^{[1
]}

Kouser, Summayya ^{[3
]}

Mishra, Abhishek Kumar ^{[3
]}

Waghmare, Umesh V. ^{[3
]}

Pradeep, T. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem, DST Unit Nanosci, Madras 600036, Tamil Nadu, India

[2] VIT Univ, Sch Mech & Bldg Sci, Madras 600127, Tamil Nadu, India

[3] JNCASR, Theoret Sci Unit, Bangalore 560064, Karnataka, India

来源：

SMALL | 2013年 / 9卷 / 02期

关键词：

first-principles calculations; graphene; pesticides; density functional theory; CARBON NANOTUBES; GRAPHITE OXIDE; ORGANOPHOSPHORUS PESTICIDES; ENDOSULFAN; INSECTICIDES; CHLORPYRIFOS; CRYSTAL; FILMS; WATER; BIODEGRADATION;

D O I：

10.1002/smll.201201125

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Unprecedented adsorption of chlorpyrifos (CP), endosulfan (ES), and malathion (ML) onto graphene oxide (GO) and reduced graphene oxide (RGO) from water is reported. The observed adsorption capacities of CP, ES, and ML are as high as similar to 1200, 1100, and 800 mg g(-1), respectively. Adsorption is found to be insensitive to pH or background ions. The adsorbent is reusable and can be applied in the field with suitable modifications. A first-principles pseudopotential-based density functional analysis of graphenewaterpesticide interactions showed that the adsorption is mediated through water, while direct interactions between graphene and the pesticides is rather weak or unlikely.

引用

页码：273 / 283

页数：11

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