Template-free synthesis of CdS hollow nanospheres based on an ionic liquid assisted hydrothermal process and their application in photocatalysis

Journal Article · Tue Jun 15 04:00:00 EDT 2010 · Journal of Solid State Chemistry

OSTI ID:21421531

Xinping, Li; Yanan, Gao; Li, Yu ^[1]

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1. Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, Shandong 250100 (China)

Polycrystalline CdS hollow nanospheres with diameter of about 130 nm have been successfully synthesized in high yield by an ionic liquid (IL) assisted template-free hydrothermal method for the first time. Both the molar ratios of Cd/S precursor in the solution and the reaction temperature play important roles in the formation of the CdS hollow nanospheres. The concentrations of capping agent hexamethylenetetramine (HMT) and polyvinylpyrrolidone (PVP) are also crucial for the morphology and size of the final product. IL was found to be a key component in the formation of CdS hollow structures, because solid spheres were obtained in the absence of IL. A subsequent growth mechanism of hollow interior by localized Ostwald ripening process has been further discussed. Such hollow structures show high photocatalytic ability in the photodegradation of methylene blue. - Graphical abstract: TEM images of typical as-prepared CdS hollow nanospheres.

• OSTI ID: 21421531
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 6 Vol. 183; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
AMIDES
AMINES
ANTI-INFECTIVE AGENTS
ANTIMICROBIAL AGENTS
AZINES
AZOLES
BLOOD SUBSTITUTES
CADMIUM COMPOUNDS
CADMIUM SULFIDES
CATALYSIS
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
DRUGS
ELECTRON MICROSCOPY
HALIDES
HALOGEN COMPOUNDS
HEMATOLOGIC AGENTS
HETEROCYCLIC COMPOUNDS
HYDROTHERMAL SYNTHESIS
INORGANIC PHOSPHORS
LACTAMS
METHYLENE BLUE
MICROSCOPY
NANOSTRUCTURES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
PHENOTHIAZINES
PHOSPHORS
PHOTOCATALYSIS
POLYMERS
POLYVINYLS
PVP
PYRROLES
PYRROLIDONES
SPHERES
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY
UROTROPIN