title: Simple synthesis of luminescent CdSe quantum dots from ascorbic acid and selenium dioxide.
abstract: A simple, low-cost and convenient method was developed for the synthesis of highly luminescent CdSe quantum dots (QDs) in an aqueous medium. Compared with previous methods, this synthesis was carried out in one pot using ascorbic acid (C6H8O6) to replace NaBH4 or N2H4·H2O as a reductant, and selenium dioxide to replace selenium or its other hazardous, expensive and unstable compounds as a precursor. The mechanism of CdSe QDs formation was elucidated. The influence of various experimental variables, including refluxing time, Cd/MSA and Cd/Se molar ratios, on the luminescent properties of the QDs were systematically investigated. X-Ray powder diffraction and transmission electron microscopy characterization indicated that the QDs had a pure cubic zinc-blended structure with a spherical shape.
authors.affiliation: Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning, 530004, China.
authors.forename: Yilin
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Ministry-Province Jointly-Constructed Cultivation Base for the State Key Laboratory of Processing Non-Ferrous Metal and Featured Materials, Guangxi Zhuang Autonomous Region, Guangxi University, Nanning, 530004, China.
authors.forename: Meihua
authors.initials: M
authors.lastname: Yu
authors.affiliation: Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning, 530004, China.
authors.forename: Kun
authors.initials: K
authors.lastname: Yang
authors.affiliation: Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning, 530004, China.
authors.forename: Jianping
authors.initials: J
authors.lastname: Lu
authors.affiliation: Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning, 530004, China.
authors.forename: Linqing
authors.initials: L
authors.lastname: Chen
mesh_terms: D001205:Ascorbic Acid / Q000737:chemistry*; D002104:Cadmium / Q000737:chemistry; D049408:Luminescent Agents / Q000138:chemical synthesis* / Q000737:chemistry; D045663:Quantum Dots / Q000737:chemistry*; D012643:Selenium / Q000737:chemistry; D064588:Selenium Oxides / Q000737:chemistry*
chemical_list: D049408:Luminescent Agents; D064588:Selenium Oxides; D002104:Cadmium; D012643:Selenium; D001205:Ascorbic Acid
keywords: cadmium selenium; luminescence; nanocrystalline materials; selenium dioxide