Back to Search
Start Over
Construction of 3D sponge-like hierarchical pore Ag10Si4O13 microblock photocatalyst with enhanced photocatalytic activities.
- Source :
-
Colloids & Surfaces A: Physicochemical & Engineering Aspects . Jan2022:Part 1, Vol. 633, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- Designing efficient visible light photocatalysts is targeted to improve the solar utilization to ameliorate environmental problems. Ag 10 Si 4 O 13 has great application potential due to a narrow band gap and the existence of internal electric field(spontaneous polarization electric field inside the crystal). Here, a novel and convenient synthetic strategy based on sol-gel method and template method was proposed to fabricate 3D sponge-like hierarchical pore Ag 10 Si 4 O 13 (HPA) microblock with enhanced photocatalytic activities. The group multiple coordination is conducive to further improve the dispersion of Ag 10 Si 4 O 13 precursor around polystyrene (PS) microsphere. Weak sintering between nano-Ag 10 Si 4 O 13 particles ensured the formation of sponge skeleton structure. Compared with Ag 10 Si 4 O 13 , HPA showed enhanced separation efficiency of electron hole pairs due to the carbon doping. And the uniform and well-developed pore structures further improved the photocatalytic performance. As a result, HPA (P-5) exhibited a degradation efficiency of 98.98% at 30 min under visible light, and an excellent cycle performance were obtained. The proposed strategy provides an important reference for the preparation of easily recoverable microblock photocatalyst. [Display omitted] • Green synthesis methods, keeping synthesis and environmental impact to a low threshold. • Multi-coordination between Ag 10 Si 4 O 13 precursor and PS resulting in a 3D sponge-like hierarchical pore. • Dual function of internal electric field and C doping enhanced photogenerated carrier separation efficiency of Ag 10 Si 4 O 13. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09277757
- Volume :
- 633
- Database :
- Academic Search Index
- Journal :
- Colloids & Surfaces A: Physicochemical & Engineering Aspects
- Publication Type :
- Academic Journal
- Accession number :
- 153866931
- Full Text :
- https://doi.org/10.1016/j.colsurfa.2021.127829