Novel cone-like ZnO mesocrystals with co-exposed (101̄1) and (0001̄) facets and enhanced photocatalytic activity

2018 ◽  
Vol 5 (9) ◽  
pp. 2257-2267 ◽  
Author(s):  
Shuhua Liang ◽  
Xufeng Gou ◽  
Jie Cui ◽  
Yongguang Luo ◽  
Hongtao Qu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Dye Degradation ◽  
Zno Nanocrystals ◽  
Photocatalytic Dye Degradation

Surface heterojunctions were constructed in ZnO mesocrystals with co-exposed curved (101̄1) and flat (0001̄) surfaces and greater photocatalytic dye degradation was achieved compared to that of ZnO nanocrystals.

scholarly journals Vanadium doped CaTiO3 cuboids: Role of vanadium in improving the photocatalytic activity

2021 ◽  
Author(s):  
Harsha Bantawal ◽  
Sandhya U. Shenoy ◽  
Denthaje Krishna Bhat
Keyword(s):  
Photocatalytic Activity ◽  
Water Splitting ◽  
Dye Degradation ◽  
Low Cost ◽  
Physicochemical Stability ◽  
Photocatalytic Dye Degradation

CaTiO3 has attracted enormous interest in the field of photocatalytic dye degradation and water splitting owing to its low cost, excellent physicochemical stability and structural tunability. Herein, we have developed...

Effects of morphology, surface area, and defect content on the photocatalytic dye degradation performance of ZnO nanostructures

RSC Advances ◽  
2014 ◽  
Vol 4 (77) ◽  
pp. 41099-41110 ◽  
Author(s):  
Natalia Morales Flores ◽  
Umapada Pal ◽  
Reina Galeazzi ◽  
Alberto Sandoval
Keyword(s):  
Photocatalytic Activity ◽  
Surface Area ◽  
Dye Degradation ◽  
Zno Nanostructures ◽  
Defect Content ◽  
Photocatalytic Dye Degradation

Contributions of morphology, surface area, and defect content, on the photocatalytic activity of ZnO nanostructures have been discussed.

ZnO Tetrapods for Potential Photocatalytic Dye Degradation

2018 ◽  
Vol 779 ◽  
pp. 97-101 ◽  
Author(s):  
Shynggys Sadyk ◽  
Timur Sh. Atabaev
Keyword(s):  
Photocatalytic Activity ◽  
Electron Microscope ◽  
Dye Degradation ◽  
Uv Light ◽  
Photocatalytic Properties ◽  
Light Illumination ◽  
X Ray ◽  
Vis Spectroscopy ◽  
Photocatalytic Dye Degradation ◽  
Scanning Electron

In this study, a facile method was used to prepare ZnO tetrapods for potential dye degradation applications. Field emission scanning electron microscope (FESEM), energy-dispersive X-ray spectroscopy (EDX) and UV-Vis spectroscopy were employed to investigate the morphology, chemical composition, and photocatalytic properties of prepared ZnO tetrapods. A Rhodamine B (RB) dye was used as a model dye to study the photocatalytic activity of the prepared sample. It was shown that RB dye can be efficiently degraded in the presence of ZnO tetrapods under continuous UV-light illumination. Thus, prepared ZnO tetrapods with excellent photocatalytic properties can be potentially used in wastewater treatment.

Review elucidating graphene derivatives (GO/rGO) supported metal sulfides based hybrid nanocomposites for efficient photocatalytic dye degradation

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Mahwash Mahar Gul ◽  
Khuram Shahzad Ahmad
Keyword(s):  
Photocatalytic Activity ◽  
Graphene Oxide ◽  
Hybrid Composites ◽  
Dye Degradation ◽  
Metal Sulfide ◽  
Pollutant Removal ◽  
Metal Sulfides ◽  
Degradation Rates ◽  
Graphene Derivatives ◽  
Photocatalytic Dye Degradation

Abstract Photocatalysis by utilizing semiconductors for the removal of toxic pollutants has gained tremendous interest for remediation purposes. The organic pollutants usually include; pesticides, dyes and other phenolic compounds. An imperative restraint associated with the photocatalytic effectiveness of the catalyst is the rapid recombination of the light generated electrons and holes. The particle agglomeration and electron-hole recombination hinders the rate of pollutant removal. For decades, researchers have used metal-sulfides efficiently for photocatalytic dye degradation. The recent use of hybrid nanomaterials with the combination of graphene derivatives such as graphene oxide and reduced graphene oxide (GO/rGO)-metal sulfide has gained interest. These composites have displayed an impressive upsurge in the photocatalytic activity of materials. The current review describes the various researches on dye photodegradation by employing (GO/rGO)-metal sulfide, exhibiting a boosted potential for photocatalytic dye degradation. A comprehensive study on (CuS, ZnS and CdS)–GO/rGO hybrid composites have been discussed in detail for effective photocatalytic dye degradation in this review. Astonishingly improved dye degradation rates were observed in all these studies employing such hybrid composites. The several studies described in the review highlighted the varying degradation rates based on diverse research parameters and efficacy of graphene derivatives for enhancement of photocatalytic activity.

Two-dimensional porous cuprous oxide nanoplatelets derived from metal–organic frameworks (MOFs) for efficient photocatalytic dye degradation under visible light

2018 ◽  
Vol 47 (23) ◽  
pp. 7694-7700 ◽  
Author(s):  
Yifan Lin ◽  
Hao Wan ◽  
Fashen Chen ◽  
Xiaohe Liu ◽  
Renzhi Ma ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Cuprous Oxide ◽  
Dye Degradation ◽  
Metal Organic Frameworks ◽  
High Photocatalytic Activity ◽  
Two Dimensional ◽  
Metal Organic ◽  
Photocatalytic Dye Degradation ◽  
Very High

Two-dimensional porous N-doped Cu2O/carbon nanoplatelets derived from metal–organic frameworks (MOFs) exhibited very high photocatalytic activity for dye degradation under visible light.

scholarly journals Enhanced Visible-Light Photocatalytic Performance of SAPO-5-Based g-C3N4 Composite for Rhodamine B (RhB) Degradation

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3948
Author(s):  
Lingfang Qiu ◽  
Zhiwei Zhou ◽  
Mengfan Ma ◽  
Ping Li ◽  
Jinyong Lu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Redox Reactions ◽  
Photocatalytic Performance ◽  
Dye Degradation ◽  
Thermal Polymerization ◽  
Light Illumination ◽  
Electron Hole ◽  
Visible Light Illumination ◽  
Visible Light Photocatalytic

Novel visible-light responded aluminosilicophosphate-5 (SAPO-5)/g-C3N4 composite has been easily constructed by thermal polymerization for the mixture of SAPO-5, NH4Cl, and dicyandiamide. The photocatalytic activity of SAPO-5/g-C3N4 is evaluated by degrading RhB (30 mg/L) under visible light illumination (λ > 420 nm). The effects of SAPO-5 incorporation proportion and initial RhB concentration on the photocatalytic performance have been discussed in detail. The optimized SAPO-5/g-C3N4 composite shows promising degradation efficiency which is 40.6% higher than that of pure g-C3N4. The degradation rate improves from 0.007 min−1 to 0.022 min−1, which is a comparable photocatalytic performance compared with other g-C3N4-based heterojunctions for dye degradation. The migration of photo-induced electrons from g-C3N4 to the Al site of SAPO-5 should promote the photo-induced electron-hole pairs separation rate of g-C3N4 efficiently. Furthermore, the redox reactions for RhB degradation occur on the photo-induced holes in the g-C3N4 and Al sites in SAPO-5, respectively. This achievement not only improves the photocatalytic activity of g-C3N4 efficiently, but also broadens the application of SAPOs in the photocatalytic field.

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