Z-scheme WOx/Cu-g-C3N4 heterojunction nanoarchitectonics with promoted charge separation and transfer towards efficient full solarspectrum photocatalysis
Authors:
- Xiao Zhang,
- Katarzyna Matras-Postolek,
- Ping Yang,
- San Ping Jiang
Abstract
Construction of Z-scheme heterojunctions has been considered one superb method in promoting solar-assisted charge carrier separation of carbon-based materials to achieve efficient utilization of solar energy in hydrogen production and CO2 reduction. One interesting concept in nanofabrication that has become trend recent years is nanoarchitectonics. A heterostructure photocatalyst constructed based on the idea of nanoarchitectonics using the combination of g-C3N4, metal and an additional semiconducting nanocomposite is investigated in this paper. Z-scheme tungsten oxide incorporated copper modified graphitic carbon nitride (WOx/Cu-g-C3N4) heterostructures are fabricated via immobilization of WOx on Cu nanoparticles modified superior thin g-C3N4 nanosheets. Mechano-chemical pre-reaction and a two-step high-temperature thermal polymerization process are the keys in attaining homogeneous distribution of Cu nanoparticles in g-C3N4 nanosheets. The horizontal growth of homogeneously distributed WOx nanobelts on Cu modified g-C3N4 (Cu-g-C3N4) base via solvothermal synthesis is achieved. The photocatalytic performances of the heterostructures are evaluated through water splitting and CO2 photoreduction measurements in full solar spectrum irradiation condition. The presence of Cu nanoparticles in the composite system improves charge transport between g-C3N4 and WOx and thus enhances the photocatalytic performances (H2 generation and CO2 photoreduction) of the composite material, while the presence of WOx nanocomposites enhances light absorption of the composite material in the near infrared range. The synthesized heterostructure with optimized WOx to Cu-g-C3N4 ratio and in case of no co-catalyst addition exhibits enhanced photocatalytic H2 evolution (4560 μmolg-1h−1) as well as excellent CO2 reduction rate (5.89 μmolg-1h−1 for CO generation).
- Record ID
- CUT458597af90fc4b21b7b017bb8712f18b
- Publication categories
- ;
- Author
- Journal series
- Journal of Colloid and Interface Science, ISSN 0021-9797, e-ISSN 1095-7103
- Issue year
- 2023
- Vol
- 636
- Pages
- 646-656
- Other elements of collation
- fot.; schem.; tab.; wykr.; Bibliografia (na s.) - 655-656; Bibliografia (liczba pozycji) - 52; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 636
- Keywords in English
- nanosheets, Cu nanoparticles, H2 evolution, CO2 reduction
- ASJC Classification
- ; ; ;
- DOI
- DOI:10.1016/j.jcis.2023.01.052 Opening in a new tab
- URL
- https://www.sciencedirect.com/science/article/pii/S0021979723000589 Opening in a new tab
- Related project
- Heterostruktury kompozytowe z g-C3N4 i klastrów metali szlachetnych jako katalizatory w procesach foto- i elektrochemicznych napędzanych światłem słonecznym. . Project leader at PK: , ,
- Language
- eng (en) English
- License
- Score (nominal)
- 100
- Score source
- journalList
- Score
- Publication indicators
- Additional fields
- Indeksowana w: Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT458597af90fc4b21b7b017bb8712f18b/
- URN
urn:pkr-prod:CUT458597af90fc4b21b7b017bb8712f18b
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.