In-situ photocalorimetry-fluorescence spectroscopy studies of RhB photocatalysis over Z-scheme g-C3N4@Ag@Ag3PO4 nanocomposites: A pseudo-zero-order rather than a first-order process

Li, Xingxing; Wan, Ting; Qiu, Jianyuan; Wei, Hui; Qin, Fanghong; Wang, Yihui; Liao, Yanjuan; Huang, Zaiyin; Tan, Xuecai

doi:10.1016/j.apcatb.2017.05.086

Cited by 126 publications

(31 citation statements)

References 55 publications

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“…All samples exhibit type IV nitrogen isotherm with a hysteresis loop, indicating the mesopores features [21]. The hysteresis loops of pristine TiO 2 , TiO 2 -3, TiO 2 -24 pertain to H3-type, that is caused by the unsaturated adsorption of nitrogen in relatively high P/P 0 [22,23]. For TiO 2 -12, a hysteresis loop is observed with distinct saturated adsorption platform in a wide relative pressure region.…”

Section: Characterization Of Prepared Tio 2 -Xmentioning

confidence: 92%

Effects of Particle Size on the Structure and Photocatalytic Performance by Alkali-Treated TiO2

et al. 2020

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Particle size of nanomaterials has significant impact on their photocatalyst properties. In this paper, TiO 2 nanoparticles with different crystalline sizes were prepared by adjusting the alkali-hydrothermal time (0-48 h). An annealing in N 2 atmosphere after hydrothermal treatment caused TiO 2 reduction and created defects, resulting in the visible light photocatalytic activity. The evolution of physicochemical properties along with the increase of hydrothermal time at a low alkali concentration has been revealed. Compared with other TiO 2 samples, TiO 2 -24 showed higher photocatalytic activity toward degrading Rhodamine B and Sulfadiazine under visible light. The radical trapping and ESR experiments revealed that O 2•is the main reactive specie in TiO 2 -24.Large specific surface areas and rapid transfer of photogenerated electrons are responsible for enhancing photocatalytic activity. The above findings clearly demonstrate that particle size and surface oxygen defects can be regulated by alkali-hydrothermal method. This research will deepen the understanding of particle size on the nanomaterials performance and provide new ideas for designing efficient photocatalysts.

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Section: Characterization Of Prepared Tio 2 -Xmentioning

confidence: 92%

Effects of Particle Size on the Structure and Photocatalytic Performance by Alkali-Treated TiO2

et al. 2020

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“…The color of RhB changed from pink to colorless which may be to cleavage of the chromophoric groups . After the conjugated structure of RhB was destructed, ring opening and mineralization occurred, which converted to carbon dioxide and water . Compared with the self‐degradation of RhB, no obvious change was observed for the PVDF membrane case as indicated in Figure b.…”

Section: Resultsmentioning

confidence: 97%

Buoyancy Assisted Janus Membrane Preparation by ZnO Interfacial Deposition for Water Pollution Treatment and Self‐cleaning

Pan

Shou

et al. 2019

Adv Materials Inter

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Water pollution, such as marine oil spill and organic chemicals pollution, is a worldwide challenge. To advance this emerging field, Janus membranes with asymmetric wettability, for oil–water separation, similitude of diode in electrocircuit, are fabricated by leveraging the buoyancy of poly(vinylidene fluoride) nanofiber on water/air interface. ZnO nanowires are in situ grown on the surface of nanofibers immersed in the solution, mimicking a nanoscale Setaria viridis structure. Such Janus membrane shows a good hydrophilicity/underwater oleophobicity on ZnO nanowires modified side and exhibits opposite hydrophobicity on the other side. Due to the side‐specific morphologies, this membrane can work either as “water‐removing” type or “oil‐removing” type filter as a diode in fluid. The membrane shows excellent permeability with the water and oil flux up to 1210 and 7653 L m−2 h−1, respectively, only driven by gravity. The durability of functional membrane is excellent and separation efficiency is higher than 97.24% after ten cycling tests. Furthermore, the hydrophilic side demonstrates an excellent photocatalytic performance over the degradation of rhodamine B dye, as self‐cleaning properties. This Janus membrane is to be an excellent candidate for wastewater remediation, both oil/water separation and organic pollutant decomposition.

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“…Furthermore, the VB edge of AgBr@Ag is located at 2.1 eV, which can oxidize OTC directly and oxidize H 2 O to . OH (1.99 eV vs. NHE) . Due to the small amount of .…”

Section: Resultsmentioning

confidence: 99%

“…PI, with lower potential of valence band (VB) does not exhibit high oxidizing ability, whereas the VB edge of AgBr@Ag is high enough to oxidize H 2 O to . OH (1.99 eV vs. NHE), which would provide good photocatalytic performance. Furthermore, many literature reports have noted that the coupling of semiconductors with plasmonic photocatalysts could accelerate the separation of photogenerated electron–hole pairs by the mutual transfer of carriers .…”

Section: Introductionmentioning

confidence: 99%

A Z‐Scheme Polyimide/AgBr@Ag Aerogel with Excellent Photocatalytic Performance for the Degradation of Oxytetracycline

Zhao

Wang

Zhang

et al. 2019

Chemistry An Asian Journal

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An ovel Z-schemep olyimide (PI)/AgBr@Aga erogel photocatalyst has been successfully synthesized by combining an in situ precipitation method and as upercritical drying method. The as-prepared PI/AgBr@Ag-50 (50 wt % AgBr@Ag in PI/AgBr@Ag) aerogel photocatalyst exhibited excellent photocatalytic activity foro xytetracycline degradation with ar ate constant of 0.025 min À1 ,w hich was 6.9 and 2.6 times higher than that of the PI aerogel or the AgBr@Ag nanoparticles, respectively.M ore significantly,t he PI/ AgBr@Ag-50 aerogel photocatalysts howed stable cycling, which could be attributed to the high mechanical strength and 3D network of the PI aerogel.T he introduction of AgBr@Ag on PI with ah eterojunction structure efficiently promoted the separation of electron-hole pairs by aZschemem echanism. The reduced metallic Ag nanoparticles were found to function as centers for the transfer of electrons from AgBr to PI. This work has revealed an ew application fort he aerogel PI/AgBr@Ag photocatalyst in environmentalp rotection.Supporting information and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

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In-situ photocalorimetry-fluorescence spectroscopy studies of RhB photocatalysis over Z-scheme g-C3N4@Ag@Ag3PO4 nanocomposites: A pseudo-zero-order rather than a first-order process

Cited by 126 publications

References 55 publications

Effects of Particle Size on the Structure and Photocatalytic Performance by Alkali-Treated TiO2

Effects of Particle Size on the Structure and Photocatalytic Performance by Alkali-Treated TiO2

Buoyancy Assisted Janus Membrane Preparation by ZnO Interfacial Deposition for Water Pollution Treatment and Self‐cleaning

A Z‐Scheme Polyimide/AgBr@Ag Aerogel with Excellent Photocatalytic Performance for the Degradation of Oxytetracycline

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