Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 4, Issue 8, Pages 4156-4163Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am300889u
Keywords
graphene; composites; adsorption; water purification; nanotechnology; environmental remediation
Funding
- Nanoscience and Nano Mission of the Department of Science and Technology (DST), Government of India
- UGC
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This paper describes a green method for the synthesis of graphenic material from cane sugar, a common disaccharide. A suitable methodology was introduced to immobilize this material on sand without the need of any binder, resulting in a composite, referred to as graphene sand composite (GSC). Raman spectroscopy confirmed that the material is indeed graphenic in nature, having G and D bands at 1597 and 1338 cm(-1), respectively. It effectively removes contaminants from water. Here, we use rhodamine 6G (R6G) as a model dye and chloropyrifos (CP) as a model pesticide to demonstrate this application. The spectroscopic and microscopic analyses coupled with adsorption experiments revealed that physical adsorption plays a dominant role in the adsorption process. Isotherm data in batch experiments show an adsorption capacity of 55 mg/g for R6G and 48 mg/g for CP, which are superior to that of activated carbon. The adsorbent can be easily regenerated using a suitable eluent. This quick and cost-effective technique for the into a commercial water filter with appropriate engineering.
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