Preparation of g-C3N4/TiO2 by template method and its photocatalytic performance

Wu, Zhengjie; Zhao, Youhai; Mi, Lijie; Guo, Yunlong; Wang, Haiwang; Liu, Kefan; Zhang, Ke; Wang, Bingzhu

doi:10.1016/j.colsurfa.2021.126756

Cited by 39 publications

(9 citation statements)

References 49 publications

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“…As shown in Fig. 2b, For bulk g-C 3 N 4 , the characteristic absorption bands in the range of 1200-1650 cm −1 were attributed to C-N and C=N stretching vibrations of the heterocycles, 52,53 while the sharp peak at 808 cm −1 was ascribed to the breathing mode of heptazine units. 54 For CNNS, it showed similar infrared spectral absorption peaks with bulk g-C 3 N 4 , but the intensities of these peaks were weaker than those of bulk g-C 3 N 4 .…”

Section: Resultsmentioning

confidence: 90%

Efficient Removal of High-Concentration Dye Pollutants in Wastewater Using Composite Photocatalyst NH₂-MIL-125 (Ti)/g-C₃N₄ Nanosheets Under Visible Light

Shi¹,

Ju²,

Nie³

et al. 2022

ECS J. Solid State Sci. Technol.

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The NH2-MIL-125(Ti)/g-C3N4 nanosheets composite photocatalyst was prepared by one-step solvothermal synthesis and used for the removal of high concentration dye wastewater. The morphology, structure and photoelectrochemical properties of the as-synthesized samples were characterized by XRD, SEM, XPS, FT-IR, UV-vis DRS PL, EIS and transient photocurrent. The results showed that g-C3N4 nanosheets were tightly loaded on the surface of NH2-MIL-125(Ti) to form the NH2-MIL-125(Ti)/g-C3N4 nanosheets composite photocatalyst. Among them, NM (Ti)/CNNS30 showed the best adsorption performance and photocatalytic degradation activity for the removal of high concentration RhB solution. In addition, the optimal experimental conditions such as the concentration of RhB solution, the dosage of NM (Ti)/CNNS30 and the initial pH of RhB were also explored. Finally, the mechanism of photocatalytic degradation of NM(Ti)/CNNS30 on high concentration RhB solution was also proposed based on active species capture experiment and energy band structure analysis. It was inferred that ·O2- and h+ were the main active species for NM(Ti) photocatalytic degradation of high concentration RhB. This work provided new insights into the design and synthesis of highly efficient photocatalysts for the practical treatment of high concentration dye wastewater.

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Section: Resultsmentioning

confidence: 90%

Efficient Removal of High-Concentration Dye Pollutants in Wastewater Using Composite Photocatalyst NH₂-MIL-125 (Ti)/g-C₃N₄ Nanosheets Under Visible Light

Shi¹,

Ju²,

Nie³

et al. 2022

ECS J. Solid State Sci. Technol.

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“…As can be clearly seen from the PL spectrum in the left panel of Figure 7, the peaks of the PL lines of the TiO 2 (B) nanobelts were the strongest, while the peaks of the PL lines of the composite decreased rapidly with the increase in the molar ratio of the added Ag 3 PO 4 . Stronger fluorescence reflects an easier recombination of the photogenerated electron-hole pairs of the substance, making it difficult for the photogenerated electron-hole pairs to migrate to the surface of the catalyst to participate in the photocatalytic redox reaction, which is not conducive to the performance of photocatalysis [30][31][32]. The right panel of Figure 7 shows the photocurrent curves of the samples.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Ag3PO4/TiO2(B) Heterojunction Nanobelt with Extended Light Response and Enhanced Photocatalytic Performance

Liu

Zhang

et al. 2021

Molecules

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Photocatalytic degradation, as an emerging method to control environmental pollution, is considered one of the most promising environmental purification technologies. As Tibet is a region with some of the strongest solar radiation in China and even in the world, it is extremely rich in solar energy resources, which is ideal for applying photocatalytic technology to its ecological environment protection and governance. In this study, Na2Ti3O7 nanobelts were prepared via a hydrothermal method and converted to TiO2∙xH2O ion exchange, which was followed by high-temperature calcination to prepare TiO2(B) nanobelts (“B” in TiO2(B) means “Bronze phase”). A simple in situ method was used to generate Ag3PO4 particles on the surface of the TiO2 nanobelts to construct a Ag3PO4/TiO2(B) heterojunction composite photocatalyst. By generating Ag3PO4 nanoparticles on the surface of the TiO2(B) nanobelts to construct heterojunctions, the light absorption range of the photocatalyst was successfully extended from UV (ultraviolet) to the visible region. Furthermore, the recombination of photogenerated electron–hole pairs in the catalyst was inhibited by the construction of the heterojunctions, thus greatly enhancing its light quantum efficiency. Therefore, the prepared Ag3PO4/TiO2(B) heterojunction composite photocatalyst greatly outperformed the TiO2(B) nanobelt in terms of photocatalytic degradation.

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“…Where n = 0.5 in the formula, because both g-C 3 N 4 and TiO 2 are direct band gap semiconductors. 37 The computed result is shown in Fig. 4(b).…”

Section: Practical Photocatalytic Performance Investigationsmentioning

confidence: 99%

Fabrication of novel direct Z-scheme + isotype heterojunction photocatalyst g-C₃N₄/TiO₂ with peroxymonosulfate (PMS) activation synergy and 2D/0D structure

Zhang

Chen

et al. 2022

Catal. Sci. Technol.

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Preparation of g-C3N4/TiO2 by template method and its photocatalytic performance

Cited by 39 publications

References 49 publications

Efficient Removal of High-Concentration Dye Pollutants in Wastewater Using Composite Photocatalyst NH₂-MIL-125 (Ti)/g-C₃N₄ Nanosheets Under Visible Light

Efficient Removal of High-Concentration Dye Pollutants in Wastewater Using Composite Photocatalyst NH₂-MIL-125 (Ti)/g-C₃N₄ Nanosheets Under Visible Light

Preparation of Ag3PO4/TiO2(B) Heterojunction Nanobelt with Extended Light Response and Enhanced Photocatalytic Performance

Fabrication of novel direct Z-scheme + isotype heterojunction photocatalyst g-C₃N₄/TiO₂ with peroxymonosulfate (PMS) activation synergy and 2D/0D structure

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Preparation of g-C3N4/TiO2 by template method and its photocatalytic performance

Cited by 39 publications

References 49 publications

Efficient Removal of High-Concentration Dye Pollutants in Wastewater Using Composite Photocatalyst NH2-MIL-125 (Ti)/g-C3N4 Nanosheets Under Visible Light

Efficient Removal of High-Concentration Dye Pollutants in Wastewater Using Composite Photocatalyst NH2-MIL-125 (Ti)/g-C3N4 Nanosheets Under Visible Light

Preparation of Ag3PO4/TiO2(B) Heterojunction Nanobelt with Extended Light Response and Enhanced Photocatalytic Performance

Fabrication of novel direct Z-scheme + isotype heterojunction photocatalyst g-C3N4/TiO2 with peroxymonosulfate (PMS) activation synergy and 2D/0D structure

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Efficient Removal of High-Concentration Dye Pollutants in Wastewater Using Composite Photocatalyst NH₂-MIL-125 (Ti)/g-C₃N₄ Nanosheets Under Visible Light

Efficient Removal of High-Concentration Dye Pollutants in Wastewater Using Composite Photocatalyst NH₂-MIL-125 (Ti)/g-C₃N₄ Nanosheets Under Visible Light

Fabrication of novel direct Z-scheme + isotype heterojunction photocatalyst g-C₃N₄/TiO₂ with peroxymonosulfate (PMS) activation synergy and 2D/0D structure