Journal
ACS CENTRAL SCIENCE
Volume 7, Issue 10, Pages 1668-1675Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acscentsci.1c00712
Keywords
-
Categories
Funding
- department of chemistry at Washington University
Ask authors/readers for more resources
The study shows that nanofibrillar PEDOT can act as a high-efficiency catalyst for the photoreduction of CO2 to CO, with record-breaking single catalytic efficiency and excellent CO production rate. Optimizing the polymer's band gap through chemical doping/dedoping treatments enhances the catalytic efficiency and performance.
Atmospheric pollution demands the development of solar-driven photocatalytic technologies for the conversion of CO2 into a fuel; state-of-the-art cocatalyst systems demonstrate conversion efficiencies currently unattainable by a single catalyst. Here, we upend the status quo demonstrating that the nanofibrillar conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) is a record-breaking single catalyst for the photoreduction of CO2 to CO. This high catalytic efficiency stems from a highly conductive nanofibrillar structure that significantly enhances surface area, CO2 adsorption and light absorption. Moreover, the polymer's band gap is optimized via chemical doping/dedoping treatments using hydrochloric acid, ammonia hydroxide, and hydrazine. The hydrazine-treated PEDOT catalyst exhibits 100% CO yield under a stable regime (>10 h) with a maximum rate of CO evolution (3000 mu mol g(cat)(-1) h(-1)) that is 2 orders of magnitude higher than the top performing single catalyst and surpassed only by three other cocatalyst systems. Nanofibrillar PEDOT provides a new direction for designing the next generation of high-efficiency photoreduction catalysts.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available