ZnO-chitosan/Rectorite Nanocomposite Exhibiting High Photocatalytic Activities under Visible-light Irradiation
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2020年第2期
论文作者：李世迁 Pen-Chi Chiang DING Ling Kinjal J.Shah 陈庆华 CHEN Sheng
文章页码：310 - 319
摘 要：Chitosan（CS）,hydrated zinc acetate,and rectorite（REC） were used as raw materials to prepare CS-embedded zinc oxide（ZnO） nanoparticle by a chemical precipitation process.Hydrogen-bonded REC-loaded ZnO-CS nanoparticle was to form ZnO-CS/REC nanocomposite photocatalyst,its morphology and structure were analyzed by means of FTIR,XRD,TGA,SEM,and TEM.The effects of the catalyst dosage,methyl orange（MO） initial concentration and solution pH on photocatalytic performance were also discussed.The experimental results show that the ZnO-CS/REC nanocomposite has a particle size of 100 nm with good dispersion and uniformity.Under irradiation of visible light,0.6 g/L photocatalyst was used to degrade MO in solution for 90 min at pH 6,then the MO solution（10 mg/L） was decolored by more than 99%,indicating that the ZnO-CS/REC nanocomposite exhibited highly photocatalytic degradation activity.Therefore,the photodegradation kinetic mechanism of MO in aqueous solution is presumed.
李世迁1，Pen-Chi Chiang2，DING Ling3，Kinjal J.Shah4，陈庆华1,5，CHEN Sheng1
1. College of Ocean and Bio-chemical Engineering, Fujian provincial Key Lab of Coastal Basin Environment, Fuqing Branch of Fujian Normal University2. Graduate Institute of Environmental Engineering, National Taiwan University3. College of Chemistry and Chemical Engineering, Wuhan University of Science and Technology4. College of Urban Construction, Nanjing Tech University5. Engineering Research Center of Polymer Green Recycling, Ministry of Education(Fujian Normal University)
摘 要：Chitosan（CS）,hydrated zinc acetate,and rectorite（REC） were used as raw materials to prepare CS-embedded zinc oxide（ZnO） nanoparticle by a chemical precipitation process.Hydrogen-bonded REC-loaded ZnO-CS nanoparticle was to form ZnO-CS/REC nanocomposite photocatalyst,its morphology and structure were analyzed by means of FTIR,XRD,TGA,SEM,and TEM.The effects of the catalyst dosage,methyl orange（MO） initial concentration and solution pH on photocatalytic performance were also discussed.The experimental results show that the ZnO-CS/REC nanocomposite has a particle size of 100 nm with good dispersion and uniformity.Under irradiation of visible light,0.6 g/L photocatalyst was used to degrade MO in solution for 90 min at pH 6,then the MO solution（10 mg/L） was decolored by more than 99%,indicating that the ZnO-CS/REC nanocomposite exhibited highly photocatalytic degradation activity.Therefore,the photodegradation kinetic mechanism of MO in aqueous solution is presumed.
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