Removal of ethylbenzene from air by graphene quantum dots and multi wall carbon nanotubes in present of UV radiation
سال انتشار: 1398
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 52
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شناسه ملی سند علمی:
JR_AMECJ-2-4_005
تاریخ نمایه سازی: 14 آذر 1402
چکیده مقاله:
Luminescent graphene quantum dots (GQDs) and multi wall carbon
nanotubes (MWCNTs) as photocatalytic sorbent based on was used for
removal of toxic ethylbenzene from air in present of UV-radiation. A novel
method based on solid gas removal (SGR) based on GQDs and MWCNTs
as an efficient adsorbent was used for ethylbenzene removal from air in
Robson quartz tubes (RGT). After synthesized and purified of GQDs and
MWCNTs, a system was designed for generation of ethylbenzene in air
with difference concentrations, and then the mixture was moved to quartz
tubes with UV radiation in optimized conditions. The ethylbenzene in
air was absorbed on the ۲۵ mg of GQDs or MWCNTs, desorbed from
sorbent at ۱۴۶oC and determined by GC-FID. The main parameters such
as, temperature, ethylbenzene concentration, amount of GQDs / MWCNTs
and flow rate were studied and optimized. The recovery of ethylbenzene
removal from air (more than ۹۵%) and absorption capacity of adsorbent
(۱۸۶.۴ mg g-۱) were achieved in present of UV radiation at room temperature
by GQDs. The flow rate and temperature were obtained at ۳۰۰ mL min-۱
and less than ۴۲ ۰C, respectively. Based on results, the special surface area
and favorite porosity of GQDs caused to efficient removal of ethylbenzene
from air in present of UV as compared to other carbon compounds such as
MWCNTs, and graphene.
کلیدواژه ها:
Graphene quantum dots ، Multi wall carbon nanotubes ، Ethylbenzene ، Air removal ، UV-radiation ، Solid gas removal
نویسندگان
Maling Gou
State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu ۶۱۰۰۴۱, China- Department of Thoracic Oncology, Cancer Center, West China Hospital, Medical School, S
Baharak Bahrami Yarahmadi
Occupational Health Engineering Department, School of Public Health, Kerman University of Medical Sciences, Kerman, Iran