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Title

BIOMOLECULE-ASSISTED SYNTHESIS OF BI2S3NANOSTRUCTURES AND OPTIMIZE THE SYNTHESIS CONDITIONS WITH DIFFERENT PH

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Abstract

 INTRODUCTION: DURING THE PAST FEW DECADES, MUCH ATTENTION HAS BEEN FOCUSED ON NANOCRYSTALS AND ONE-DIMENSIONAL (1D) NANOSTRUCTURES OF SEMICONDUCTORS, OWING TO THEIR FUNDAMENTAL SIGNIFICANCE IN INVESTIGATING THE DEPENDENCE OF VARIOUS PHYSICAL PROPERTIES ON DIMENSIONALITY AND SIZE REDUCTION AS WELL AS THEIR POTENTIAL APPLICATIONS IN THE FABRICATION OF ELECTRONIC, OPTOELECTRONIC, ELECTROCHEMICAL, AND ELECTROMECHANICAL DEVICES WITH NANOSCALE DIMENSIONS [1, 2].RECENTLY, MUCH ATTENTION HAS BEEN FOCUSED ON FABRICATING VARIOUS INORGANIC NANOMATERIALS BY USING BIOMOLECULES. ALTHOUGH VARIOUS APPROACHES HAVE BEEN DEVELOPED TO PREPARE BI2S3 WITH MULTIFARIOUS MORPHOLOGIES, GREEN SYNTHESIS IS HIGHLY DESIRABLE BECAUSE ENVIRONMENT-FRIENDLY APPROACH MAY BE CONSIDERED TO BE A RELATIVELY GREEN CHEMICAL ALTERNATIVE OF PRACTICAL SIGNIFICANCE [3].BISMUTH SULFIDE (BI2S3), A VERY IMPORTANT PHOTOCONDUCTIVE, DIRECT BAND GAP (EG=1.3-EV) SEMICONDUCTOR, HAS NUMEROUS SIGNIFICANT APPLICATIONS INCLUDING IN PHOTOVOLTAIC CONVERTERS, PHOTODIODE ARRAYS, AND THERMOELECTRIC COOLING TECHNOLOGIES BASED ON THE PELTIER EFFECT, CT CONTRAST AGENT [4, 5].

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