122nd General Meeting of the KCS

Type Poster Presentation
Area Physical Chemistry
Room No. Grand Ballroom
Time 10월 19일 (금요일) 11:00~12:30
Code PHYS.P-215
Subject Construction of 1-D ternary Nano hybrid CdS/ZnS/Pt for high selective CO2 reduction with water- Highly efficient and durable semiconductor for CO generation
Authors Praveen Kumar Dharani, Putta Rangappa, TaeKyu Kim*
Department of Chemistry, Pusan National University, Korea
Abstract

Carbon dioxide (CO2) the major contributor to climate change becoming increasingly apparent and worrisome due to its role as greenhouse gas. Conversion of anthropogenic (CO2) to value-added chemicals through solar driven catalysis considered as an appealing approach to tackle CO2 emission challenges. Although materials developed to produce high energy fuels from CO2 reduction with water, it is still a challenge to develop suitable, highly efficient and stable nanostructures for long time operation. As CO2 reduction reaction requires participation of multiple electrons, only nano hybrids involving two are more selective co-catalysts is beneficial. Herein, we report photo deposited Pt on core shell structured CdS-ZnS nano hybrid as durable catalyst for CO2 reduction. The unique design integrates covering of CdS nanorods with ZnS shells and further photo reduction of H2PtCl6 onto CdS/ZnS in water-alcohol system. This delicate design accelerates the separation and transfer of photo generated charges, enhanced the photo absorption, reduced photo corrosion of CdS and facilitates abundant catalytic active sites. The as-synthesized CdS/ZnS/Pt nano hybrids are investigated for photocatalytic CO2 reduction with water to produce CO and CH4 in presence of Tri ethanol amine (TEOA) as hole (h+) scavenger. The optimized CdS/ZnS/Pt catalyst exhibited good stability for more than 42 hrs with unbroken rate of reaction for CO generation. The hybrid material realizes efficient solar-to-chemical energy conversion in suspension, demonstrating the potential of delicate structured materials are highly efficient and stable catalysts for photo reduction of CO2.

E-mail apr30003@gmail.com