Synthesis and characterization of low-cost g-C 3 N 4 /TiO 2 composite with enhanced photocatalytic performance under visible-light irradiation

Senthil, Raja Arumugam; Theerthagiri, Jayaraman; Selvi, A.; Madhavan, J.

doi:10.1016/j.optmat.2017.01.025

Cited by 115 publications

(32 citation statements)

References 46 publications

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“…The different energy levels are the most important requirement for formation of the composites of two different photocatalysts, which helped to produce higher electron-hole charge carriers through reducing the recombination. The valence band (VB) and conduction band (CB) potentials of the as-obtained pure α-FeOOH and α-AgVO 3 were determined through the following Equations (2) and (3) [24,61]. E VB = X − E e + 0.5E g…”

Section: Photocatalytic Degradation Mechanismmentioning

confidence: 99%

“…Among the different metal oxides, the TiO 2 is the most frequently used photocatalyst for environmental remediation due to its outstanding properties of low cost, non-toxicity, high stability and relatively suitable band gaps for photocatalytic reaction [22,23]. However, the practical application of TiO 2 photocatalyst has been restricted so far in visible-light irradiation because of its limited response to solar light spectrum and fast recombination of electron-hole charge carriers for the large band-gap of 3.2 eV [24]. Therefore, the design and development of highly visible-light responsive semiconductor-based photocatalysts is an urgent requirement for its practical applications.…”

Section: Introductionmentioning

confidence: 99%

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A Facile Synthesis of Visible-Light Driven Rod-on-Rod like α-FeOOH/α-AgVO3 Nanocomposite as Greatly Enhanced Photocatalyst for Degradation of Rhodamine B

et al. 2018

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In this work, we have synthesized the rod-on-rod–like α-FeOOH/α-AgVO3 nanocomposite photocatalysts with the different amounts of solvothermally synthesized α-FeOOH nanorods via a simple co-precipitation method. The as-synthesized photocatalysts were characterized by X-ray diffraction (XRD), Fourier-transform infrared (FT-IR) spectroscopy, UV−Visible diffuse reflectance spectroscopy, scanning electron microscopy (SEM), element mapping, high-resolution transmission electron microscopy (HR-TEM) and X-ray photoelectron spectroscopy (XPS) analysis. The observed SEM images show that both α-AgVO3 and α-FeOOH exhibits the rod-shaped morphology with nano size. Furthermore, the photocatalytic activities of the obtained photocatalysts were evaluated towards the degradation of Rhodamine B (RhB) under visible-light irradiation. It is demonstrated that the 3 mg α-FeOOH added to the α-FeOOH/α-AgVO3 nanocomposite exhibited an enhanced photocatalytic performance as compared with the pure α-AgVO3 and α-FeOOH. This significant improvement can be attributed to the increased photo-excited electron-hole pair separation efficiency, large portion of visible-light absorption ability and the reduced recombination of the electron-hole pair. The recycling test revealed that the optimized nanocomposite exhibited good photostability and reusability properties. In addition, the believable photodegradation mechanism of RhB using α-FeOOH/α-AgVO3 nanocomposite is proposed. Hence, the developed α-FeOOH/α-AgVO3 nanocomposite is a promising material for the degradation of organic pollutants in an aqueous environment.

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Section: Photocatalytic Degradation Mechanismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Facile Synthesis of Visible-Light Driven Rod-on-Rod like α-FeOOH/α-AgVO3 Nanocomposite as Greatly Enhanced Photocatalyst for Degradation of Rhodamine B

et al. 2018

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“…E e denotes the free electron energy (about 4.5 eV). Also, the electronegativity of TiO 2 is 5.81 eV [28]. The VB and CB values of the TiO 2 were determined to be 2.75 and −0.14 eV, respectively.…”

Section: Photo-degradation Mechanismmentioning

confidence: 94%

Facile synthesis of improved anatase TiO2 nanoparticles for enhanced solar-light driven photocatalyst

et al. 2020

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Herein, we have reported a new Photon Induced Method (PIM) to the synthesis of enhanced temperature stable anatase phased TiO 2 nanoparticles. These TiO 2 nanoparticles exhibited an anatase phase even after calcinating at 800 °C for average crystallite size is 9 nm with a bandgap is 2.98 eV, stretching into the visible light region are identified from DRS, and photoluminescence spectroscopic studies. Whereas, the standard and others reported TiO 2 has existed a 100% rutile phase at this same temperature. The reversibly improved TiO 2 has attained from the PIM method by tuning of oxygen vacancy during the preparation condition. The enhanced methylene blue dye under in the solar-light 100% degradation within 10 min is a very novel report, not reported elsewhere. The obtained pure anatase TiO 2 with high chemical reactivity has a great potential for antibacterial, cancer cells kill, photocatalysis and solar energy conversion applications under solar-light irradiation.

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“…It is highly efficient in catalyzing hydrogen production and degrading organic pollutants under visible light. [14][15][16] It can be obtained by roasting inexpensive raw materials, such as urea, thiourea and melamine. [17][18][19] The forbidden band width of g-C 3 N 4 is 2.7 eV, which is not only excited by visible light, but also has high solar energy utilization.…”

Section: Introductionmentioning

confidence: 99%

Nano-zirconia supported by graphitic carbon nitride for enhanced visible light photocatalytic activity

Liu

et al. 2020

RSC Adv.

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Synthesis and characterization of low-cost g-C 3 N 4 /TiO 2 composite with enhanced photocatalytic performance under visible-light irradiation

Cited by 115 publications

References 46 publications

A Facile Synthesis of Visible-Light Driven Rod-on-Rod like α-FeOOH/α-AgVO3 Nanocomposite as Greatly Enhanced Photocatalyst for Degradation of Rhodamine B

A Facile Synthesis of Visible-Light Driven Rod-on-Rod like α-FeOOH/α-AgVO3 Nanocomposite as Greatly Enhanced Photocatalyst for Degradation of Rhodamine B

Facile synthesis of improved anatase TiO2 nanoparticles for enhanced solar-light driven photocatalyst

Nano-zirconia supported by graphitic carbon nitride for enhanced visible light photocatalytic activity

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