Fabrication of g-C3N4/PW12/TiO2 composite with significantly enhanced photocatalytic performance under visible light

Shi, Hongfei; Zhao, Tingting; Wang, Jiabo; Chen, Zhe; Liu, Baolei; Ji, Hai‐Feng; Wang, Weidong; Zhang, Guanglei; Li, Yangguang

doi:10.1016/j.jallcom.2020.157924

Cited by 54 publications

(16 citation statements)

References 79 publications

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“…In addition, there are three main peaks in N 1s spectra (Figure 3B). The peak at 398.42 eV in the spectra of the two samples represents C-N=C bonds and the two smaller peaks at 399.80 and 400.90 eV can be classified as N-(C) 3 and C-N-H, respectively [55]. Moreover, O 1s spectra of pCN and D149/pCN are shown in Figure 3C.…”

Section: Regular Characterizationmentioning

confidence: 95%

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g-C3N4 Sensitized by an Indoline Dye for Photocatalytic H2 Evolution

Chen

Liu

2021

Processes

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Protonated g-C3N4 (pCN) formed by treating bulk g-C3N4 with an aqueous HCl solution was modified with D149 dye, i.e., 5-[[4[4-(2,2-diphenylethenyl) phenyl]-1,2,3,3a,4,8b-hexahydrocyclopent[b]indol-7-yl] methylene]-2-(3-ethyl-4-oxo-2-thioxo-5-thiazolidinylidene)-4-oxo-thiazolidin-2-ylidenerhodanine, for photocatalytic water splitting (using Pt as a co-catalyst). The D149/pCN-Pt composite showed a much higher rate (2138.2 µmol·h−1·g−1) of H2 production than pCN-Pt (657.0 µmol·h−1·g−1). Through relevant characterization, the significantly high activity of D149/pCN-Pt was linked to improved absorption of visible light, accelerated electron transfer, and more efficient separation of charge carriers. The presence of both D149 and Pt was found to be important for these factors. A mechanism was proposed.

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Section: Regular Characterizationmentioning

confidence: 95%

“…N=C bonds and the two smaller peaks at 399.80 and 400.90 eV can be classified as N-(C)3 and C-N-H, respectively[55]. Moreover, O 1s spectra of pCN and D149/pCN are shown in Figure3C.…”

mentioning

confidence: 97%

g-C3N4 Sensitized by an Indoline Dye for Photocatalytic H2 Evolution

Chen

Liu

2021

Processes

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“…Photocatalysis degradation has been demonstrated as one of the successful methods for the removal of phenolic compounds in wastewater. [117,118] POMs have already been used as photocatalysts for phenol oxidation for a long time. [119] Recently, significant progress has been made in the degradation of phenolic compounds with POMbased composite photocatalysts.…”

Section: Photocatalytic Degradation Of Other Organic Pollutantsmentioning

confidence: 99%

Application of polyoxometalates in photocatalytic degradation of organic pollutants

et al. 2021

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“…In recent years, the discharge of various organic pollutants has caused irreversible repercussions to natural ecosystems and human health [1][2][3][4]. Many methods are used for solving these environmental problems, such as photocatalysis, physical adsorption and advanced oxidation [5][6][7][8][9][10][11][12][13][14][15][16][17]. Among them, photocatalytic Fenton oxidation [18][19][20] has attracted more and more attention due to its advantages of simple operation, high efficiency, no secondary pollution and effective removal of environmental pollutants [21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Hollow Nanospheres Organized by Ultra-Small CuFe2O4/C Subunits with Efficient Photo-Fenton-like Performance for Antibiotic Degradation and Cr(VI) Reduction

et al. 2022

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Hollow transition metal oxides have important applications in the degradation of organic pollutants by a photo-Fenton-like process. Herein, uniform, highly dispersible hollow CuFe2O4/C nanospheres (denoted as CFO/C-PNSs) were prepared by a one-pot approach. Scanning electron microscope (SEM) and transmission electron microscope (TEM) images verified that the CFO/C-PNS catalyst mainly presents hollow nanosphere morphology with a diameter of 250 ± 30 nm. Surprisingly, the photodegradation test results revealed that CFO/C-PNSs had an excellent photocatalytic performance in the elimination of various organic contaminants under visible light through the efficient Fenton catalytic process. Due to the unique hollow structure formed by the assembly of ultra-small CFO/C subunits, the catalyst exposes more reaction sites, improving its photocatalytic activity. More importantly, the resulting magnetically separable CFO/C-PNSs exhibited excellent stability. Finally, the possible photocatalytic reaction mechanism of the CFO/C-PNSs was proposed, which enables us to have a clearer understanding of the photo-Fenton mechanism. Through a series of characterization and analysis of degradation behavior of CFO/C-PNS samples over antibiotic degradation and Cr(VI) reduction, •OH radicals generated from H2O2 decomposition played an essential role in enhancing the reaction efficiency. The present work offered a convenient method to fabricate hollow transition metal oxides, which provided impetus for further development in environmental and energy applications. Highlights: Novel hollow CuFe2O4/C nanospheres were prepared by a facile and cost-effective method. CuFe2O4/C exhibited excellent photo-Fenton-like performance for antibiotic degradation. Outstanding photocatalytic performance was attributed to the specific hollow cavity-porous structure. A possible mechanism for H2O2 activation over hollow CuFe2O4/C nanospheres was detailed and discussed.

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Fabrication of g-C3N4/PW12/TiO2 composite with significantly enhanced photocatalytic performance under visible light

Cited by 54 publications

References 79 publications

g-C3N4 Sensitized by an Indoline Dye for Photocatalytic H2 Evolution

g-C3N4 Sensitized by an Indoline Dye for Photocatalytic H2 Evolution

Application of polyoxometalates in photocatalytic degradation of organic pollutants

Hollow Nanospheres Organized by Ultra-Small CuFe2O4/C Subunits with Efficient Photo-Fenton-like Performance for Antibiotic Degradation and Cr(VI) Reduction

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