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MgO-Modified Activated Carbon Fibers for Enhanced Adsorption of Toluene: Efficiency and Mechanism
Wu Wenjuan,He Han,Chu Wei,Lin Baoguo,Wang Pan,Zhu Chengzhu 한국화학공학회 2024 Korean Journal of Chemical Engineering Vol.41 No.8
To enhance the surface functionalities of activated carbon fi ber (ACF), the impregnation and high-temperature calcination methods were utilized to eff ectively load magnesium oxide on ACF. Dynamic adsorption tests were carried out to examine the impact of diff erent doping amounts and calcination temperatures with respect to the adsorption performance of MgO/ ACF on toluene, and it was characterized by SEM, XRD, N 2 ad-desorption isotherms and FT-IR technique. When Mg/ACF mass ratio was 3% and a calcination temperature of 550 °C, the Mg 0.03 /ACF-550 composite material revealed the optimum adsorption capacity of toluene was 230.8 mg/g, which was 31% higher than the original ACF, and it could be regenerated and permitting reuse for multiple cycles. Its adsorption process of toluene occurred via a combination of surface adsorption and pore-fi lling mechanisms.
A fluorescent probe for colorimetric detection of bisulfite and application in sugar and red wine
Haitao Chen,Xiaoming Wu,Jialin Wang,Hao Wang,Feiyan Tao,Shaoxiang Yang,Hongyu Tian,Yongguo Liu,Baoguo Sun 한국식품과학회 2019 Food Science and Biotechnology Vol.28 No.4
A new fluorescent probe made from (E)-2-(benzo[d]thiazol-2-yl)-3-(6-hydroxynaphthalen-2-yl) acrylonitrile(Probe 1) was synthesized for the determination ofbisulfite concentrations in real food samples (red wine andsugar). Adding bisulfite to a Probe 1 solution caused amarked decrease in fluorescence intensity and a visualcolor change from yellow to light yellow. This distinctcolor response indicates that Probe 1 could be used as avisual sensor for bisulfite. Probe 1 can detect bisulfitequantitatively in the range 0–400 lM with a detection limitof 0.10 lM. This makes Probe 1 a convenient signalinginstrument for determining bisulfite levels in sugar and redwine samples.