Journal ArticleDOI
Ultrasonic chemical synthesis of hybrid mpg-C3N4/BiPO4 heterostructured photocatalysts with improved visible light photocatalytic activity
Reads0
Chats0
TLDR
In this paper, the structure, morphology, surface composition and chemical state of mpg-C3N4/BiPO4 hybrid photocatalysts were characterized by XRD, TEM, FTIR and XPS, respectively.Abstract:
Highly efficient mpg-C3N4/BiPO4 heterostructured photocatalysts were successfully synthesized via a facile ultrasonic chemical method. The structure, morphology, surface composition and chemical state of mpg-C3N4/BiPO4 hybrid photocatalysts were characterized by XRD, TEM, FTIR and XPS, respectively. Their photocatalytic activity was evaluated under visible light, UV light and solar light irradiation against the photodegradation of rhodamine B (RhB). BiPO4 nanorod was anchored on the surface of mpg-C3N4 nanosheets and the strong electrostatic interaction between mpg-C3N4 and BiPO4 facilitated the formation of mpg-C3N4/BiPO4 heterostructure. Under visible light irradiation, O2− and h+ were the two primary active species. BiPO4 served as an electron trap to efficiently promote the separation of photogenerated electron-hole pairs. The electrons in the CB of both BiPO4 and mpg-C3N4 could react with O2 adsorbed onto the surface of BiPO4/mpg-C3N4 and reduce it to form O2−, the holes left behind in the VB of mpg-C3N4 could not directly oxidize OH− or H2O to form OH. The 9.5CN/0.5BPO could degrade 92.3% of RhB in 30 min, which was about 1.3 times as high as that of mpg-C3N4. The TOC removal rate of 9.5CN/0.5BPO was 1.23 times higher than that of mpg-C3N4. Under UV light irradiation, O2−, h+ and OH were the primary active species, the inhibition degree followed the order BQ > EDTA-2Na > TBA. The electrons in the CB of both BiPO4 and mpg-C3N4 could react with O2 to generate O2−, the holes in the VB of BiPO4 could react with OH− or H2O to produce OH. The 9.5CN/0.5BPO could degrade 94.3% of RhB in 6 min, which was approximately 4.2 times higher than that of BiPO4 and 1.5 times larger than that of mpg-C3N4. The TOC removal rate of 9.5CN/0.5BPO was 6.98 times higher than that of P25. HPLC analysis proved that the destruction of the conjugated structure of RhB would be the major process. Based on the experimental results, a possible charge transfer mechanism for the enhanced visible and UV light photocatalytic activity was proposed.read more
Citations
More filters
Journal ArticleDOI
MIL-101(Fe)/g-C3N4 for enhanced visible-light-driven photocatalysis toward simultaneous reduction of Cr(VI) and oxidation of bisphenol A in aqueous media
Feiping Zhao,Feiping Zhao,Yongpeng Liu,Samia Ben Hammouda,Bhairavi Doshi,Néstor Guijarro,Xiaobo Min,Chong-Jian Tang,Mika Sillanpää,Kevin Sivula,Shaobin Wang +10 more
TL;DR: In this article, a MIL-101(Fe)/g-C3N4 heterojunction was synthesized via in-situ growth of MIL- 101(Fe) onto g-C 3N4 surface and applied as a bifunctional photocatalyst for simultaneous reduction of Cr(VI) and degradation of BPA under visible light.
Journal ArticleDOI
Boosting the Photocatalytic Ability of g-C3N4 for Hydrogen Production by Ti3C2 MXene Quantum Dots.
TL;DR: Ti3C2 MXene quantum dots (QDs) possess the activity of Pt as co-catalyst in promotion the photocatalytic H2 evolution to form heterostructure with g-C3N4 nanosheets (NSs) (denoted as g-N4@Ti2C2 QDs), causing the improvement of carrier transfer efficiency.
Journal ArticleDOI
Engineering spherical lead zirconate titanate to explore the essence of piezo-catalysis
TL;DR: In this article, the role of polarization charges and free charges in piezoelectric catalysis by doping the PZT with a spherical morphology was investigated and the relationship between deformation and catalytic performance was clarified.
Journal ArticleDOI
Photocatalytic properties of the g-C3N4/{010} facets BiVO4 interface Z-Scheme photocatalysts induced by BiVO4 surface heterojunction
TL;DR: The g-C3N4/{010} facets of BiVO4 interface Z-scheme photocatalysts are fabricated by ultrasonic dispersion method as mentioned in this paper.
Journal ArticleDOI
Constructing Highly Uniform Onion-Ring-like Graphitic Carbon Nitride for Efficient Visible-Light-Driven Photocatalytic Hydrogen Evolution.
Lifeng Cui,Jialing Song,Allister F. McGuire,Shifei Kang,Xueyou Fang,Junjie Wang,Chaochuang Yin,Xi Li,Yangang Wang,Bianxiao Cui +9 more
TL;DR: Experimental characterization and testing suggest that onion-ring-like g-C3N4 facilitates charge separation, extends the lifetime of photoinduced carriers, exhibits 5-fold higher photocatalytic hydrogen evolution, and shows great potential for photoc atalytic applications.
References
More filters
Journal ArticleDOI
A metal-free polymeric photocatalyst for hydrogen production from water under visible light
Xinchen Wang,Kazuhiko Maeda,Arne Thomas,Kazuhiro Takanabe,Gang Xin,Johan M. Carlsson,Kazunari Domen,Markus Antonietti +7 more
TL;DR: It is shown that an abundant material, polymeric carbon nitride, can produce hydrogen from water under visible-light irradiation in the presence of a sacrificial donor.
Journal ArticleDOI
Unique Electronic Structure Induced High Photoreactivity of Sulfur-Doped Graphitic C3N4
TL;DR: The homogeneous substitution of sulfur for lattice nitrogen and a concomitant quantum confinement effect are identified as the cause of this unique electronic structure and the excellent photoreactivity of C(3)N(4-x)S(x), which may shed light on general doping strategies for designing potentially efficient photocatalysts.
Journal ArticleDOI
Graphitic carbon nitride materials: controllable synthesis and applications in fuel cells and photocatalysis
TL;DR: In this article, the potential applications of nanostructured and nanoporous graphitic carbon nitrides (g-C3N4) materials have been developed for a wide range of new applications.
Journal ArticleDOI
Graphitic Carbon Nitride Polymers toward Sustainable Photoredox Catalysis.
TL;DR: The methods to modify the electronic structure, nanostructure, crystal structure, and heterostructure of g-C3 N4, together with correlations between its structure and performance are illustrated.
Journal ArticleDOI
Metal‐Containing Carbon Nitride Compounds: A New Functional Organic–Metal Hybrid Material
TL;DR: Wang et al. as discussed by the authors proposed a method for the extraction of Colloid Chemistry Max-Planck Institute of Colloids and Interfaces Research Campus Golm, 14476 Potsdam (Germany).