Silver/Silver(II) oxide (Ag/AgO) loaded graphitic carbon nitride microspheres: An effective visible light active photocatalyst for degradation of acidic dyes and bacterial inactivation

2018 ◽  
Vol 221 ◽  
pp. 339-348 ◽  
Author(s):  
Devthade Vidyasagar ◽  
Sachin G. Ghugal ◽  
Aditi Kulkarni ◽  
Pragya Mishra ◽  
Ashok G. Shende ◽  
...  
Keyword(s):  
Visible Light ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Bacterial Inactivation ◽  
Visible Light Active ◽  
Silver Silver

scholarly journals Investigation of Fe-Doped Graphitic Carbon Nitride-Silver Tungstate as a Ternary Visible Light Active Photocatalyst

2021 ◽  
Vol 2021 ◽  
pp. 1-18
Author(s):  
Eid H. Alosaimi ◽  
Nadia Azeem ◽  
Noor Tahir ◽  
Asim Jilani ◽  
Muhammad Zahid ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Visible Light ◽  
Metal Oxides ◽  
Advanced Oxidation Processes ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Oxidation Processes ◽  
Visible Light Active ◽  
Silver Tungstate

The rapid population growth and economic development have largely contributed to environmental pollution. Various advanced oxidation processes have been used as the most viable solution for the reduction of recalcitrant pollutants and wastewater treatment. Heterogeneous photocatalysis is one of the broadly used technologies for wastewater treatment among all advanced oxidation processes. Graphitic carbon nitride alone or in combination with various other semiconductor metal oxide materials acts as a competent visible light active photocatalyst for the removal of recalcitrant organic pollutants from wastewater. Rational designing of an environment-friendly photocatalyst through a facile synthetic approach encounters various challenges in photocatalytic technologies dealing with semiconductor metal oxides. Doping in g-C3N4 and subsequent coupling with metal oxides have shown remarkable enhancement in the photodegradation activity of g-C3N4-based nanocomposites owing to the modulation in g-C3N4 bandgap structuring and surface area. In the current study, a novel ternary Fe-doped g-C3N4/Ag2WO4 visible light active photocatalyst was fabricated through an ultrasonic-assisted facile hydrothermal method. Characterization analysis included SEM analysis, FTIR, XRD, XPS, and UV-Visible techniques to elucidate the morphology and chemical structuring of the as-prepared heterostructure. The bandgap energies were assessed using the Tauc plot. The ternary nanocomposite (Fe-CN-AW) showed increased photodegradation efficiency (97%) within 120 minutes, at optimal conditions of pH = 8, catalyst dose = 50 mg/100 ml, an initial RhB concentration of 10 ppm, and oxidant dose 5 mM under sunlight irradiation. The enhanced photodegradation of rhodamine B dye by ternary Fe-CN-AW was credited to multielectron transfer pathways due to insertion of a Fe dopant in graphitic carbon nitride and subsequent coupling with silver tungstate. The data were statistically assessed by the response surface methodology.

Graphitic carbon nitride/Na2Ti3O7/V2O5 nanocomposite as a visible light active photocatalyst

2020 ◽  
Vol 46 (11) ◽  
pp. 18287-18296 ◽  
Author(s):  
S.V. Prabhakar Vattikuti ◽  
Nguyen Dang Nam ◽  
Jaesool Shim
Keyword(s):  
Visible Light ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Visible Light Active

Metal-free g-C3N4 nanosheets as a highly visible-light-active photocatalyst for thiol–ene reactions

Nanoscale ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 3493-3499
Author(s):  
Shouren Zhang ◽  
Wenjing Yi ◽  
Yanzhen Guo ◽  
Ruoqi Ai ◽  
Zhichao Yuan ◽  
...  
Keyword(s):  
Visible Light ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Ene Reactions ◽  
Metal Free ◽  
Visible Light Active ◽  
Carbon Nitride Nanosheets

Graphitic carbon nitride nanosheets are synthesized as photocatalysts for thiol–ene reactions. They are metal-free, highly visible-light active, recyclable and scalable.

scholarly journals Mesoporous Graphitic Carbon Nitride-Based Nanospheres as Visible-Light Active Chemical Warfare Agents Decontaminant

ChemNanoMat ◽  
2016 ◽  
Vol 2 (4) ◽  
pp. 268-272 ◽  
Author(s):  
Dimitrios A. Giannakoudakis ◽  
Mykola Seredych ◽  
Enrique Rodríguez-Castellón ◽  
Teresa J. Bandosz
Keyword(s):  
Visible Light ◽  
Carbon Nitride ◽  
Chemical Warfare Agents ◽  
Chemical Warfare ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Active Chemical ◽  
Visible Light Active ◽  
Warfare Agents

Constructing graphite-like carbon nitride modified hierarchical yolk–shell TiO2 spheres for water pollution treatment and hydrogen production

2016 ◽  
Vol 4 (5) ◽  
pp. 1806-1818 ◽  
Author(s):  
Zhifeng Jiang ◽  
Chengzhang Zhu ◽  
Weiming Wan ◽  
Kun Qian ◽  
Jimin Xie
Keyword(s):  
Water Pollution ◽  
Hydrogen Production ◽  
Visible Light ◽  
Carbon Nitride ◽  
Porous Graphitic Carbon ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Pollution Treatment ◽  
Visible Light Active ◽  
Active Composite

Here we present a new visible light active composite based on porous graphitic carbon nitride decorated hierarchical yolk–shell TiO2 spheres for water pollution treatment and H2 evolution.

scholarly journals Templated Fabrication of Graphitic Carbon Nitride with Ordered Mesoporous Nanostructures for High-Efficient Photocatalytic Bacterial Inactivation under Visible Light Irradiation

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Jianqin Chen ◽  
Wenting Lin ◽  
Liyan Xie ◽  
Jianhui Huang ◽  
Wanjun Wang
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Light Irradiation ◽  
Graphitic Carbon Nitride ◽  
Bacterial Inactivation ◽  
Ordered Mesoporous ◽  
K 12 ◽  
Mesoporous Nanostructures

Biohazards are widely present in water, and a variety of waterborne diseases can be aroused by contaminated water. Therefore, the effective removal of biological hazards from water is necessary for the protection of human health. In this study, graphitic carbon nitride (g-C3N4) with ordered mesoporous nanostructures was successfully synthesized by a template method using SBA-15 as a hard template. The morphology, crystal structure, specific surface area, molecular structure, and light absorption properties of the as-prepared sample were characterized by TEM, XRD, BET, FT-IR, and UV-Vis DRS, respectively. The photocatalytic performance of the ordered mesoporous g-C3N4 was evaluated by the inactivation of Escherichia coli K-12 in water under visible light irradiation. Results showed that the bacterial inactivation efficiency can reach as high as 99% within 2 h of VL irradiation, which is 4 times higher than that of bulk g-C3N4. Moreover, the photocatalytic bacterial inactivation mechanism was revealed by a scavenging study, and the main active species in the photocatalytic inactivation process was found to be a photogenerated hole. This work will provide useful information for the development of new efficient g-C3N4-based materials for enhanced water disinfection applications by introducing ordered mesoporous nanostructures in a photocatalyst design and fabrication.

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