Simple fabrication and photocatalytic activity of ZnO particles with different morphologies

Xie, Juan; Li, Yanting; Zhao, Wei; Bian, Li; Wei, Yu

doi:10.1016/j.powtec.2010.10.019

Cited by 159 publications

(61 citation statements)

References 49 publications

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“…On the other hand, with the decrease of the crystal size the distance of photo-generated electrons and holes moving from internal to the surface is shorten, thus promote the process of photo degradation. Third, it is well-known that the crystal morphologies play also important role on the photocatalytic performance of ZnO nanocrystals since the photocatalytic activity is strongly depends on some specific exposed crystal faces [49,50]. However, such a specific crystal faces is still open questions to answer.…”

Section: Photocatalytic Activitymentioning

confidence: 99%

Spray drying assisted assembly of ZnO nanocrystals using cellulose as sacrificial template and studies on their photoluminescent and photocatalytic properties

Yuan

Wang

et al. 2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Zincoxen cellulose solution was used as raw materials for the preparation of zincoxen/cellulose complex microspheres via a spray drying process. The obtained zincoxen/cellulose microspheres were turned into assemblies of ZnO nanocrystals upon calcinations at 500 or 700 . The assemblies of ZnO nanocrystals exhibit high photocatalytic activity for methyl orange degradation under ultraviolet light irradiation in aqueous solution and also satisfied reusability and stability of morphology and composition.Page 3 of 24 A c c e p t e d M a n u s c r i p t Highlight Spray drying technique was utilized for the preparation of ZnO nanocrystal assemblies using zincoxen cellulose solution as raw materials.Zincoxen plays both the role as solvent for cellulose and precursor for the ZnO nanocrystals.Cellulose acts as assembly agent during the spray drying step and sacrificial templates in the calcinations processThe content of cellulose and the calcination temperature influence the properties of the resulted ZnO nanocrystal assembliesThe assemblies of ZnO nanocrystals exhibit high photocatalytic activity for methyl orange degradation in aqueous solution.Page 4 of 24

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Section: Photocatalytic Activitymentioning

confidence: 99%

Spray drying assisted assembly of ZnO nanocrystals using cellulose as sacrificial template and studies on their photoluminescent and photocatalytic properties

Yuan

Wang

et al. 2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…Zinc Oxide (ZnO) is an n-type semiconductor notable for its wide band gap (3.2 eV), large binding energy (60 meV), non-toxic nature and similar photodegradation mechanism to TiO 2 [2] which allows it to be a potential alternate photocatalyst. Many techniques have been employed to synthesis nanosized ZnO, namely sol-gel processing [3], co-precipitation [4], hydrothermal growth [5] and thermal decomposition [6].…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of ZnO Nanoparticles by an Alginate Mediated Ion-Exchange Process and a case study for Photocatalysis of Methylene Blue Dye

Keong

Vivek

Salamatinia

et al. 2017

J. Phys.: Conf. Ser.

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Abstract. In this study, zinc oxide (ZnO) was prepared via extrusion-dripping method through an ion exchange mediated process using sodium alginate. The samples were synthesized at 500 ˚C and 600 ˚C to study the effect of calcination temperature. The morphology, microstructure and optical activity of the calcined ZnO nanoparticles were analyzed by TGA, FESEM and XRD. It was found that ZnO nanoparticles synthesized at 600 ˚C was of higher purity with high crystallinity. To enhance the photocatalytic efficiency of zinc oxide, ZnO/NCC films were synthesized at varying ZnO loading fractions of 10 wt%, 15 wt%, 20 wt% and 25 wt% and were evaluated by photodegradation of Methylene blue dye and the highest dye percentage removal is found to be 96% which is obtained at ZnO loadings of 25 wt%. The usage of ionexchange process has shown promising results in producing ZnO of desirable characteristics.

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“…Data from several reports have shown that the addition of nanoparticles in NF systems has led to a reduction in the membrane fouling flux with an increased total removal of colour and unwanted elements of wastewater dyes [3]. ZnO nanoparticles, in particular, would be of interest due to their higher reactivity, surface area, photosensitivity, chemical stability, non-toxic nature, and low cost [4]. Along with its stable wurtzite structure and wide bandgap (3.4 eV) compound semiconductor, ZnO has been mainly used as a catalyst for dye treatment [5,6].…”

Section: Introductionmentioning

confidence: 99%

Influence of zinc oxide nanoparticles in the nanofiltration of hazardous Congo red dyes

Hairom

Mohammad

Kadhum

2015

Chemical Engineering Journal

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Simple fabrication and photocatalytic activity of ZnO particles with different morphologies

Cited by 159 publications

References 49 publications

Spray drying assisted assembly of ZnO nanocrystals using cellulose as sacrificial template and studies on their photoluminescent and photocatalytic properties

Spray drying assisted assembly of ZnO nanocrystals using cellulose as sacrificial template and studies on their photoluminescent and photocatalytic properties

Green Synthesis of ZnO Nanoparticles by an Alginate Mediated Ion-Exchange Process and a case study for Photocatalysis of Methylene Blue Dye

Influence of zinc oxide nanoparticles in the nanofiltration of hazardous Congo red dyes

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