A highly efficient dual-phase GaN(O)/Nb2O5(N) photocatalyst prepared through nitridation and reoxidation process for NO removal

Abdellatif, Hassan R.S.; Zhang, Guan; Tang, Yu; Ruan, Wenji; Li, Jibiao; Xie, Deti; Ni, Jiupai; Ni, Chengsheng

doi:10.1016/j.cej.2020.126199

Cited by 27 publications

(9 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[6][7][8][9] According to the research of titanium dioxide (TiO 2 ) single crystal in photoelectrochemistry, Fujishima and Honda [10] pioneered the field of semiconductor photocatalysis. However, the wide band gap of metal oxide such as ZnO, [11][12][13][14] SnO 2 , [15][16][17][18] Nb 2 O 5 , [19][20][21] etc., makes them only respond to near-ultraviolet or ultraviolet light, resulting in low efficiency of solar energy. In fact, visible light accounts for 43% of sunlight, while ultraviolet ray accounts for merely 4%.…”

mentioning

confidence: 99%

Ultrathin 2D/2D ZnIn₂S₄/g‐C₃N₄ Nanosheet Heterojunction with Atomic‐Level Intimate Interface for Photocatalytic Hydrogen Evolution under Visible Light

Dang

Xie

Dai

et al. 2021

Adv Materials Inter

View full text Add to dashboard Cite

hydrogen combustion only produces water. Therefore, hydrogen as a promising energy for the future development can help to meet the future energy needs and solve environmental problems. [4,5] Semiconductor-based photocatalytic water splitting utilizing renewable solar energy for hydrogen production is considered to be a feasible technology with great promise. [6][7][8][9] According to the research of titanium dioxide (TiO 2 ) single crystal in photoelectrochemistry, Fujishima and Honda [10] pioneered the field of semiconductor photocatalysis. However, the wide band gap of metal oxide such as ZnO, [11][12][13][14] SnO 2 , [15][16][17][18] Nb 2 O 5 , [19][20][21] etc., makes them only respond to near-ultraviolet or ultraviolet light, resulting in low efficiency of solar energy. In fact, visible light accounts for 43% of sunlight, while ultraviolet ray accounts for merely 4%. Therefore, developing visible light-driven photocatalysts attracts widespread attention for purpose of making better use of solar energy. [22][23][24] Graphite carbon nitride (g-C 3 N 4 ) is an attractive nonmetallic conjugated polymer semiconductor, which has been extensively applied in photocatalytic water splitting because of its attractive electronic structure, excellent thermal and chemical stability, unique 2D layered structure, suitable band gap, low toxicity, etc. [25][26][27] However, the actual application of the original g-C 3 N 4 still suffers from the limitations of underutilization of visible light, lacking of catalytic active sites, hydrophobic surface, low carrier mobility, and rapid recombination of photoinduced carriers. [28,29] For addressing these challenges, various strategies have been adopted so as to improve the photocatalytic performance of the original g-C 3 N 4 , such as nanostructure design, [30][31][32] doping of metallic and nonmetallic elements, [33][34][35][36] construction of heterojunctions, [37][38][39][40] copolymerization, [41][42][43] defect engineering, and dye sensitization. [44,45] Among them, the controllable synthesis of nanoscale morphology is one of the resultful means. Because of its characteristics including appropriate porosity, massive surface groups for anchoring, large specific surface area, slim thickness and as well as high aspect ratio, semiconductor nanosheets describe a brilliant future. [46] Therefore, 2D g-C 3 N 4 nanosheets may significantly improve the photocatalytic activity. [47,48] Besides, integration with other semiconductors to build heterojunctions is considered to be a reliable means. [49][50][51] Ultrathin 2D/2D heterostructures usually Designation of high-efficiency water splitting photocatalyst is still a challenge in converting solar energy into chemical fuels. Heterojunction can inhibit recombination of carriers which is considered to be a reliable strategy to improve photocatalytic performance on water splitting. In this work, a "face-to-face" 2D tight heterostructure is constructed by growing ZnIn 2 S 4 nanosheets on g-C 3 N 4 nanosheets. Due to the ultrathin 2D structure...

show abstract

mentioning

confidence: 99%

Ultrathin 2D/2D ZnIn₂S₄/g‐C₃N₄ Nanosheet Heterojunction with Atomic‐Level Intimate Interface for Photocatalytic Hydrogen Evolution under Visible Light

Dang

Xie

Dai

et al. 2021

Adv Materials Inter

View full text Add to dashboard Cite

show abstract

“…4d) with a lower binding energy would probe a deeper region underneath the surface. 46 According to the binding energy, Ga existed mainly in the form of ZGO oxide. The binding energy of Ga 3d in reduced ZGO was higher than in ZGO because of the migration of Ga in the [GaO 6 ] octahedron to the tetrahedron site.…”

Section: Resultsmentioning

confidence: 99%

“…4d) with a lower binding energy would probe a deeper region underneath the surface. 46 According to Fig. 3 TEM images of ZGO after reduction with 5% H 2 at 650 °C for 15 h (a-h) and 800 °C for 5 h (i-l).…”

Section: Materials Characterization Studiesmentioning

confidence: 99%

Transparent conductive oxide type materials as the anode of solid oxide fuel cells at a reduced temperature

Zhang

et al. 2022

J. Mater. Chem. A

Self Cite

View full text Add to dashboard Cite

show abstract

“…The photocurrent and Mott-Schottky were obtained on an electrochemical workstation (Zennium Pro, Zahner, Germany) in a conventional three electrodes configuration with the synthesized samples as the working electrode, a gold mesh as the counter electrode, Ag/AgCl as a reference electrode, and Na 2 SO 4 (0.5 M) aqueous solution as the electrolyte, respectively. The working electrodes (2 cm 2 ) were prepared by spreading a slurry form 5 mg of samples, 25 µl of PEDOT and 50 µl of water on F-doped tin oxide glass with glass rod using adhesive tapes as spacers [28]. After drying in ambient air, the photoelectrodes were dried at 150 • C for 30 min.…”

Section: Photo-electrochemical Measurementmentioning

confidence: 99%

Plasma-treatment of polymeric carbon nitride for efficient NO abatement under visible light

Zeng¹,

Ni²,

Mariotti³

et al. 2022

J. Phys. D: Appl. Phys.

Self Cite

View full text Add to dashboard Cite

Photocatalysis is considered to be efficient in combatting emission nitrogen oxide (NOx), which is one of the atmospheric pollutants affecting human health. Polymeric carbon nitride (PCN) is a low-cost polymeric photocatalyst with a 2-dimensional structure that is sensitive to the visible sunlight in the solar spectrum, but its photocatalytic efficiency needs to be enhanced for the purpose of pollutant abatement. In this study, PCN was treated using a facile ambient pressure dielectric barrier discharge (DBD) plasma in air, Ar and Ar-5% H2 flow. According to the spectroscopic characterization and NO removal tests, the DBD plasma did not destroy the crystal structure of PCN, but improved the separation efficiency of photogenerated charges and enhanced the capacity of NO abatement. The plasma treatment in Ar-5% H2 showed an optimal removal efficiency of 69.19% and a selectivity for nitrate of 90.51% under visible light irradiation. The hydrogen plasma etched the PCN surface, resulting in more defects (carbon vacancies) and carbonyl group on the surface, while the air plasma was found to increase the suspending NOx bonding on the surface for the increased NOx emission under illumination. The generation of high-energy electron and reactive radicals in the electrical discharges could cause the surface modification of PCN for efficient photocatalysis.

show abstract

A highly efficient dual-phase GaN(O)/Nb2O5(N) photocatalyst prepared through nitridation and reoxidation process for NO removal

Cited by 27 publications

References 69 publications

Ultrathin 2D/2D ZnIn₂S₄/g‐C₃N₄ Nanosheet Heterojunction with Atomic‐Level Intimate Interface for Photocatalytic Hydrogen Evolution under Visible Light

Ultrathin 2D/2D ZnIn₂S₄/g‐C₃N₄ Nanosheet Heterojunction with Atomic‐Level Intimate Interface for Photocatalytic Hydrogen Evolution under Visible Light

Transparent conductive oxide type materials as the anode of solid oxide fuel cells at a reduced temperature

Plasma-treatment of polymeric carbon nitride for efficient NO abatement under visible light

Contact Info

Product

Resources

About

A highly efficient dual-phase GaN(O)/Nb2O5(N) photocatalyst prepared through nitridation and reoxidation process for NO removal

Cited by 27 publications

References 69 publications

Ultrathin 2D/2D ZnIn2S4/g‐C3N4 Nanosheet Heterojunction with Atomic‐Level Intimate Interface for Photocatalytic Hydrogen Evolution under Visible Light

Ultrathin 2D/2D ZnIn2S4/g‐C3N4 Nanosheet Heterojunction with Atomic‐Level Intimate Interface for Photocatalytic Hydrogen Evolution under Visible Light

Transparent conductive oxide type materials as the anode of solid oxide fuel cells at a reduced temperature

Plasma-treatment of polymeric carbon nitride for efficient NO abatement under visible light

Contact Info

Product

Resources

About

Ultrathin 2D/2D ZnIn₂S₄/g‐C₃N₄ Nanosheet Heterojunction with Atomic‐Level Intimate Interface for Photocatalytic Hydrogen Evolution under Visible Light

Ultrathin 2D/2D ZnIn₂S₄/g‐C₃N₄ Nanosheet Heterojunction with Atomic‐Level Intimate Interface for Photocatalytic Hydrogen Evolution under Visible Light