Facile and Green synthesis of Novel Fluorescent CQD’S from Calotropis Gigantea (blue) Leaves for Photocatalytic Degradation of Dyes

Dr B Mallikarjuna
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Abstract

A sustainable, economical, and efficient method for producing biocompatible novel fluorescent carbon quantum dots (CQD’s) using the leaves of medicinal plant Calotropis gigantean by using microwave assist method. The obtained CG CQD’S were characterized by UV-Visible spectrophotometer, Fourier Transform Infrared Spectroscopy(FTIR), X-Ray diffraction(XRD), Dynamic light scattering (DLS) and Fluorescence spectroscopy. The synthesized carbon quantum dots (CQD's) are used to study the photo catalytic dye degradation of Bromophenol and Rose Bengal. The photocatalytic degradation of rose bengal by CQD’S with two different concentrations (50μg/ml and 100μg/ml ) was 18.5% and 35.33% degradation respectively. The photocatalytic degradation of bromo phenol blue by CQD’S with two different concentrations (50μg/ml and 100μg/ml) was 19.7% and 36.14 % degradation respectively. Keywords; Green synthesis, Calotropis Gigantea(CG),Carbon quantum dots, Photocatalytic, Rose Bengal, Bromphenol.
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从石菖蒲(蓝)叶中轻松绿色合成新型荧光 CQD'S,用于染料的光催化降解
一种可持续、经济、高效的方法,采用微波辅助法,利用药用植物石菖蒲的叶片生产生物相容性新型荧光碳量子点(CQD)。通过紫外-可见分光光度计、傅立叶变换红外光谱(FTIR)、X 射线衍射(XRD)、动态光散射(DLS)和荧光光谱对获得的 CG CQD'S 进行了表征。合成的碳量子点(CQD)被用于研究光催化降解溴酚和玫瑰红染料。两种不同浓度(50 微克/毫升和 100 微克/毫升)的碳量子点对玫瑰红的光催化降解率分别为 18.5% 和 35.33%。两种不同浓度(50μg/ml 和 100μg/ml)的 CQD'S 对溴酚蓝的光催化降解率分别为 19.7% 和 36.14%。关键词:绿色合成,石菖蒲(CG),碳量子点,光催化,玫瑰红,溴酚。
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