https://scholars.lib.ntu.edu.tw/handle/123456789/616364
Title: | Solar to hydrocarbon production using metal-free water-soluble bulk heterojunction of conducting polymer nanoparticle and graphene oxide | Authors: | Lien H.-T. Chang Y.-C. Huang C.-Y. Hsu H.-C. Chang S.-T. Wong D.P. Wang C.-H. Wang C.-H. Chen K.-H. Chen L.-C. LI-CHYONG CHEN |
Issue Date: | 2021 | Journal Volume: | 154 | Journal Issue: | 16 | Source: | Journal of Chemical Physics | Abstract: | This work demonstrates the first example of interfacial manipulation in a hybrid photocatalyst based on poly(3-hexylthiophene-2,5-diyl) (P3HT) nanoparticle and graphene oxide (GO) bulk heterojunctions to efficiently reduce CO2 into selective industrial hydrocarbons under gas-phase reaction and visible-light illumination. High selectivity of chemical products (methanol and acetaldehyde) was observed. Moreover, the hybrid photocatalyst’s solar-to-fuel conversion efficiency was 13.5 times higher than that of pure GO. The increased production yield stems from the co-catalytic and sensitizing role of P3HT in the hybrid system due to its ability to extend light absorption to the visible range and improve interfacial charge transfer to GO. The hybrid P3HT-GO formed a type II heterojunction, and its static and dynamic exciton behaviors were examined using fluorescence spectroscopy and exciton lifetime mapping. A reduced fluorescence decay time was observed by interfacial manipulation for improved dispersion, indicating a more efficient charge transfer from the excited P3HT to GO. Thus, the conducting polymer nanoparticles, 2D nanocarbon, have demonstrated superior performance as a metal-free, non-toxic, low-cost, and scalable heterogeneous photocatalyst for CO2 reduction to solar fuel, a solid-gas system. © 2021 Author(s). |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104824340&doi=10.1063%2f5.0042716&partnerID=40&md5=77afc524e54eb76471df6b5f303eeed3 https://scholars.lib.ntu.edu.tw/handle/123456789/616364 |
ISSN: | 00219606 | DOI: | 10.1063/5.0042716 | SDG/Keyword: | Carbon dioxide;Charge transfer;Chemical reactions;Conducting polymers;Excitons;Fluorescence;Fluorescence spectroscopy;Graphene;Heterojunctions;Hybrid systems;Hydrocarbons;Light;Light absorption;Phase interfaces;Conducting polymer nanoparticles;Fluorescence decay time;Fuel conversion efficiencies;Heterogeneous photocatalysts;Hydrocarbon production;Interfacial charge transfer;Poly(3-hexylthiophene-2 ,5-diyl);Type II hetero junctions;Metal nanoparticles |
Appears in Collections: | 凝態科學研究中心 |
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