首页|An experimental and theoretical study on photoluminescence of Ce3+-doped ZnS quantum dots and their application in Aspergillus oryzae

An experimental and theoretical study on photoluminescence of Ce3+-doped ZnS quantum dots and their application in Aspergillus oryzae

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ZnS and ZnS:3.125％Ce3+(ZSC)quantum dots(QDs)were synthesized by a low-temperature solid-phase method.The crystal structure,photoluminescence(PL)properties of ZSC QDs,and their effects on the growth and kojic acid production of Aspergillus oryzae(A.oryzae)were investigated.It is found that both QDs have a cubic blend structure with the average particle size ranging of 2.75-6.14 nm.Ce3+doping not only increases the band gap of ZnS QDs from 3.43 to 3.48 eV,but also increases the PL intensity by about 2.23 times,which is due to the fact that the electron carrier concentration is improved,and then the rate of radiative recombination is increased.The integral emission intensity,biomass,extracellular proteins yield,and kojic acid production of A.oryzae cultured with ZSC(ZnS)QDs are about 4.31(3.23),1.61(1.20),1.12(1.09),and 2.99(1.68)times higher than that of medium without QDs,respectively.

ZnSQuantum dotsDopingFirst-principles calculationsAspergillus oryzaeRare earths

Yan Lei、Guangzhi Zhang、Yitong Yao、Gaiqin Zhu、Zhong Chen、Jiangrong Dan、Hua Liu、Shuwang Duo

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School of Materials and Mechanical and Electrical Engineering,Jiangxi Science and Technology Normal University,Nanchang,330013,China

国家自然科学基金江西省自然科学基金Postgraduate Innovation Special Fund Grant Program of Jiangxi Science and Technology Normal UniversityDoctoral Starting up Foundation of Jiangxi Science and Technology Normal UniversityYouth Outstanding Talent Project of Jiangxi Science and Technology Normal Universityrespectively

6196400820212BAB204017YC2022-x132015QNBJRC006

2024

10.1016/j.jre.2023.07.005

稀土学报(英文版)
中国稀土学会

稀土学报(英文版)

CSTPCDEI
影响因子：1.3
ISSN：1002-0721
年,卷(期)：2024.42(6)
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