A novel bismuth oxyhalide/carbon quantum dot photocatalyst for the degradation of trichloroethane

Stieve, Brandon

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https://hdl.handle.net/2142/109910 Copy

Description

Title

A novel bismuth oxyhalide/carbon quantum dot photocatalyst for the degradation of trichloroethane

Author(s)

Stieve, Brandon

Issue Date

2021-04-27

Keyword(s)

• trichloroethane
• TCE
• remediation

Abstract

Presented by: Brandon Stieve – Graduate Student at Ball State University, brandonstieve@icloud.com Abstract: Trichloroethane (TCE) has been widely used for a number of industrial processes since the early 20th century, and as a result is also the most abundant contaminate in US groundwater. The US EPA lists TCE as a known carcinogen & is carcinogenic by all routes of exposure. Semiconductor photocatalysts have been increasingly studied for the remediation of toxic compounds. In this presentation, we describe a novel approach to enhance the photocatalytic activity of bismuth oxyhalides (BiOX) semiconductors by canon quantum dots sensitization. Varying sizes of carbon dots were prepared by a microwave synthesis using urea & citric acid as precursors. Subsequently, a specific wt% of carbon dots were integrated into different BiOX nano sheets by a surfactant-assisted hydrothermal method at 80°C. The catalytic activity of BiOCl, BiOBr, & BiOI along with there carbon dot-integrated composite were evaluated in the light-activated degradation of rhodamine B dye. Pristine BiOX photocatalysts displayed efficient degradation of rhodamine B with the activity order of BiOCl > BiOBr > BiOI. Integrating carbon dots into BiOX nano sheets demonstrated encased photocatalytic activity. The new composite material are promising photocatalysts for the degradation of TCE & other chlorinated volatile organic compounds Biography: I am a student from Ball State Universities Graduate Chemistry Program. I enjoy bike riding & hiking through nature. my future plan is to enroll in a chemistry PhD program, beyond that I plan on working on pure research in environmental chemistry.

Series/Report Name or Number

2021 Emerging Contaminants in the Environment Conference (ECEC21)

Type of Resource

• text
• still image

Language

en

Permalink

• http://hdl.handle.net/2142/109910
• https://youtu.be/lW0eAfoOy9M

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