An anion exchange approach to Bi2WO6 hollow microspheres with efficient visible light photocatalytic reduction of CO2 to methanol

Abstract
An anion exchange strategy is explored to synthesize Bi2WO6 hollow microspheres based on the microscale Kirkendall effect. The as-prepared Bi2WO6 hollow microspheres display high CO2 adsorption capacity and visible light photocatalytic conversion efficiency of CO2 into methanol without the aid of any co-catalyst.