ZnO nanoparticles implanted in TiO2 macrochannels as an effective direct Z-scheme heterojunction photocatalyst for degradation of RhB

Wang, Juan; Wang, Guohong; Wei, Xianhong; Guo, Liejin; Li, Jun

doi:10.1016/j.apsusc.2018.06.182

Cited by 156 publications

(36 citation statements)

References 74 publications

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“…Recently, many photocatalysts with different structures and shapes have been designed and synthesized. In particular, the metal-oxide semiconductor has received intensive attention for the photocatalytic degradation of organic wastewater due to its suitable band structure, physicochemical stability, non-toxicity, and so on [7][8][9]. Moreover, the one-dimensional (1D) nanostructure has been confirmed as a favorable structure for the photocatalytic degradation process, profiting from the enlarged specific surface area, short immigrating path of the ion, and unique 1D electron transfer trajectory [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Sulfur-doped g-C3N4/TiO2 S-scheme heterojunction photocatalyst for Congo Red photodegradation

Wang

Cheng

et al. 2021

Chinese Journal of Catalysis

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Section: Introductionmentioning

confidence: 99%

Sulfur-doped g-C3N4/TiO2 S-scheme heterojunction photocatalyst for Congo Red photodegradation

Wang

Cheng

et al. 2021

Chinese Journal of Catalysis

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“…The reduction products, CH 2 O, HCOOH, CH 3 OH and CH 4 , were obtained, and this result laid the foundation for photocatalytic CO 2 reduction. Thereafter, TiO 2 was continuously proven to be an efficient and promising photocatalyst (Liu G., et al, 2018; Wang et al, 2018b, 2019). Various Ti-based modified catalysts have been designed and developed for improving the CO 2 photoreduction efficiency (Jiang et al, 2018; Zhao et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

A Highly Efficient Composite Catalyst Constructed From NH2-MIL-125(Ti) and Reduced Graphene Oxide for CO2 Photoreduction

et al. 2019

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Substantial consumption of fossil fuels causes an increase in CO2 emissions and intensifies global pollution problems, such as the greenhouse effect. Recently, a new type of ultra-low-density porous material, metal-organic frameworks (MOFs), has been developed for the photocatalytic conversion of CO2. Herein, a composite photocatalytic catalyst based on NH2-MIL-125(Ti) and reduced graphene oxide (rGO@NH2-MIL-125) was fabricated through a facile “one-pot” process. The acquired materials were characterized to obtain their structures, morphologies, and optical information. The experimental results showed that methyl formate (MF) was the predominant reaction product, and rGO@NH2-MIL-125 exhibited the highest yield of 1,116 μmol·g−1·h−1, more than twice that of pure MIL-125. The high photoactivity of rGO@NH2-MIL-125 can be ascribed to the effective spatial separation and transfer of photoinduced carriers, largely due to the synergistic effect of amino functionality and rGO incorporation. rGO@NH2-MIL-125 also displayed acceptable repeatability in cyclic runs for CO2 reduction.

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“…Current developments for the use TiO 2 are focused on the support of the photocatalyst on a wide variety of materials (Ansón-Casaos et al, 2013;Ranjith et al, 2019) which may set the basis for the implementation of applied waste-water treatment solutions. (Wang et al, 2018), in a degradation process mediated by the formation of a direct Zscheme heterojunction structure formed between ZnO and TiO 2 , with hydroxyl and superoxide anion radical playin relevant roles in the phtocatalytic process. Similarly, enhanced photocatalytic performance under visible light irradiation have been observed for p-n heterojunctions formed in TiO 2 nanofibers decorated with Ag 2 O nanoparticles (Liu et al, 2019), effect mainly attributed to the fast separation of the photogenerated electronhole pairs and high light absorption efficiency of the fibers.…”

Section: Vbmentioning

confidence: 99%

Photocatalytic Degradation of Aqueous Rhodamine 6G Using Supported TiO2 Catalysts. A Model for the Removal of Organic Contaminants From Aqueous Samples

et al. 2020

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As a model for the removal of complex organic contaminants from industrial water effluents, the heterogeneous photocatalytic degradation of Rhodamin 6G was studied using TiO 2-derived catalysts, incorporated in water as suspension as well as supported in raschig rings. UV and Visible light were tested for the photo-degradation process. TiO 2 catalysts were synthesized following acid synthesis methodology and compared against commercial TiO 2 catalyst samples (Degussa P25 and Anatase). The bandgap (E g) of the TiO 2 catalysts was determined, were values of 2.97 and 2.98 eV were obtained for the material obtained using acid and basic conditions, respectively, and 3.02 eV for Degussa P25 and 3.18 eV for anatase commercial TiO 2 samples. Raschig ringssupported TiO 2 catalysts display a good photocatalytic performance when compared to equivalent amounts of TiO 2 in aqueous suspension, even though a large surface area of TiO 2 material is lost upon support. This is particularly evident by taking into account that the characteristics (XRD, RD, Eg) and observed photodegradative performance of the synthesized catalysts are in good agreement with the commercial TiO 2 samples, and that the RH6G photodegradation differences observed with the light sources considered are minimal in the presence of TiO 2 catalysts. The presence of additives induce changes in the kinetics and efficiency of the TiO 2-catalyzed photodegradation of Rh6G, particularly when white light is used in the process, pointing toward a complex phenomenon, however the stability of the supported photocatalytic systems is acceptable in the presence of the studied additives. In line with this, the magnitude of the chemical oxygen demand, indicates that, besides the different complex photophysical processes taking place, the endproducts of the considered photocatalytic systems appears to be similar.

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ZnO nanoparticles implanted in TiO2 macrochannels as an effective direct Z-scheme heterojunction photocatalyst for degradation of RhB

Cited by 156 publications

References 74 publications

Sulfur-doped g-C3N4/TiO2 S-scheme heterojunction photocatalyst for Congo Red photodegradation

Sulfur-doped g-C3N4/TiO2 S-scheme heterojunction photocatalyst for Congo Red photodegradation

A Highly Efficient Composite Catalyst Constructed From NH2-MIL-125(Ti) and Reduced Graphene Oxide for CO2 Photoreduction

Photocatalytic Degradation of Aqueous Rhodamine 6G Using Supported TiO2 Catalysts. A Model for the Removal of Organic Contaminants From Aqueous Samples

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