Effect of microwave irradiation time on structural and optical properties of ZnS nanoparticles

B. Lalitha Devi; K. Mohan Rao; D. Ramananda

doi:10.1016/j.inoche.2022.109460

Effect of microwave irradiation time on structural and optical properties of ZnS nanoparticles

B. Lalitha Devi^*, K. Mohan Rao, D. Ramananda

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

In this communication, we report the synthesis of ZnS nanoparticles by chemical precipitation of Zn²⁺ ions with S^2- ions in aqueous solution. Freshly formed ZnS nanoparticles (NPs) in colloidal suspension were microwave irradiated for different time intervals in a domestic microwave oven. Effect of microwave irradiation (MWI) time on microstructure, surface morphology and optical properties of NPs are studied using various characterization tools. The structural analysis confirms the influence of MWI time on cubic and crystalline nature of the samples which are in good agreement with selected area electron diffraction (SAED) pattern. The size of the NPs increased with increase in time of MWI. The size increase is consistent with literature reports that microwave irradiation accelerates not only the nucleation but also crystal growth. The band gap of the material tends to decrease as a function of irradiation time. The role of MWI time on surface defect removing process is also explained in detail.

Original language	English
Article number	109460
Journal	Inorganic Chemistry Communications
Volume	140
DOIs	https://doi.org/10.1016/j.inoche.2022.109460
Publication status	Published - 06-2022

All Science Journal Classification (ASJC) codes

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/j.inoche.2022.109460

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title = "Effect of microwave irradiation time on structural and optical properties of ZnS nanoparticles",

abstract = "In this communication, we report the synthesis of ZnS nanoparticles by chemical precipitation of Zn2+ ions with S2- ions in aqueous solution. Freshly formed ZnS nanoparticles (NPs) in colloidal suspension were microwave irradiated for different time intervals in a domestic microwave oven. Effect of microwave irradiation (MWI) time on microstructure, surface morphology and optical properties of NPs are studied using various characterization tools. The structural analysis confirms the influence of MWI time on cubic and crystalline nature of the samples which are in good agreement with selected area electron diffraction (SAED) pattern. The size of the NPs increased with increase in time of MWI. The size increase is consistent with literature reports that microwave irradiation accelerates not only the nucleation but also crystal growth. The band gap of the material tends to decrease as a function of irradiation time. The role of MWI time on surface defect removing process is also explained in detail.",

author = "{Lalitha Devi}, B. and {Mohan Rao}, K. and D. Ramananda",

note = "Funding Information: The authors thank Bhandarkars{\textquoteright} Arts and Science college, Kundapura for sample preparation facilities and Manipal Academy of Higher Education, Manipal- for characterizations. One of the authors, Lalitha Devi B thanks the University Grants Commission, Government of India, for teacher fellowship. Funding Information: The authors thank Bhandarkars? Arts and Science college, Kundapura for sample preparation facilities and Manipal Academy of Higher Education, Manipal- for characterizations. One of the authors, Lalitha Devi B thanks the University Grants Commission, Government of India, for teacher fellowship. Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = jun,

doi = "10.1016/j.inoche.2022.109460",

language = "English",

volume = "140",

journal = "Inorganic Chemistry Communications",

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T1 - Effect of microwave irradiation time on structural and optical properties of ZnS nanoparticles

AU - Lalitha Devi, B.

AU - Mohan Rao, K.

AU - Ramananda, D.

N1 - Funding Information: The authors thank Bhandarkars’ Arts and Science college, Kundapura for sample preparation facilities and Manipal Academy of Higher Education, Manipal- for characterizations. One of the authors, Lalitha Devi B thanks the University Grants Commission, Government of India, for teacher fellowship. Funding Information: The authors thank Bhandarkars? Arts and Science college, Kundapura for sample preparation facilities and Manipal Academy of Higher Education, Manipal- for characterizations. One of the authors, Lalitha Devi B thanks the University Grants Commission, Government of India, for teacher fellowship. Publisher Copyright: © 2022 Elsevier B.V.

PY - 2022/6

Y1 - 2022/6

N2 - In this communication, we report the synthesis of ZnS nanoparticles by chemical precipitation of Zn2+ ions with S2- ions in aqueous solution. Freshly formed ZnS nanoparticles (NPs) in colloidal suspension were microwave irradiated for different time intervals in a domestic microwave oven. Effect of microwave irradiation (MWI) time on microstructure, surface morphology and optical properties of NPs are studied using various characterization tools. The structural analysis confirms the influence of MWI time on cubic and crystalline nature of the samples which are in good agreement with selected area electron diffraction (SAED) pattern. The size of the NPs increased with increase in time of MWI. The size increase is consistent with literature reports that microwave irradiation accelerates not only the nucleation but also crystal growth. The band gap of the material tends to decrease as a function of irradiation time. The role of MWI time on surface defect removing process is also explained in detail.

AB - In this communication, we report the synthesis of ZnS nanoparticles by chemical precipitation of Zn2+ ions with S2- ions in aqueous solution. Freshly formed ZnS nanoparticles (NPs) in colloidal suspension were microwave irradiated for different time intervals in a domestic microwave oven. Effect of microwave irradiation (MWI) time on microstructure, surface morphology and optical properties of NPs are studied using various characterization tools. The structural analysis confirms the influence of MWI time on cubic and crystalline nature of the samples which are in good agreement with selected area electron diffraction (SAED) pattern. The size of the NPs increased with increase in time of MWI. The size increase is consistent with literature reports that microwave irradiation accelerates not only the nucleation but also crystal growth. The band gap of the material tends to decrease as a function of irradiation time. The role of MWI time on surface defect removing process is also explained in detail.

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Effect of microwave irradiation time on structural and optical properties of ZnS nanoparticles

Abstract

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