One-step pyrolytic synthesis of ZnO nanorods with enhanced photocatalytic activity and high photostability under visible light and UV light irradiation

Huang, Nan; Shu, Jinxia; Wang, Zhonghua; Chen, Ming; Ren, Chunguang; Zhang, Wei

doi:10.1016/j.jallcom.2015.07.039

Cited by 147 publications

(50 citation statements)

References 52 publications

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“…In the spectrum of GO, the peak at 532.6 eV was attribute to C=O groups, and the peak at 533.9 eV was assigned to C-OH and/or C-O-C groups [37]. The O 1s spectrum of SnO 2 could be resolved into two peaks, which were assigned to Sn-O bond (531.0 eV) and Sn-OH (532.9 eV), respectively [38,39]. When SnO 2 was coupled with GO, an extra peak at 531.7 eV was found, which was attributed to the possible formation of Sn-O-C bonds [37].…”

Section: Resultsmentioning

confidence: 99%

Influence of interface combination of RGO-photosensitized SnO 2 @RGO core-shell structures on their photocatalytic performance

Shen

Zhao

Duan

et al. 2017

Applied Surface Science

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Section: Resultsmentioning

confidence: 99%

Influence of interface combination of RGO-photosensitized SnO 2 @RGO core-shell structures on their photocatalytic performance

Shen

Zhao

Duan

et al. 2017

Applied Surface Science

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“…ZnO is a representative n-type semiconductor, with a wide band gap of 3.37 eV and a high excitation binding energy of 60 meV [15], and produces electron–hole pairs under UV light or visible light irradiation. The electron and hole can interact with the O 2 adsorbed on the surface of the photocatalyst and H 2 O to generate ·O 2 − and ·OH, respectively, which can reduce and oxidize the organic contaminants completely into their respective end products (CO 2 and H 2 O, respectively) [16, 17].…”

Section: Introductionmentioning

confidence: 99%

Preparation of ZnO Photocatalyst for the Efficient and Rapid Photocatalytic Degradation of Azo Dyes

et al. 2017

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Zinc oxide (ZnO) photocatalysts were synthesized by sol–gel method using zinc acetate as precursor for degradation of azo dyes under UV irradiation. The resultant samples were characterized by different techniques, such as XRD, SEM, and EDX. The influence of preparation conditions such as calcination temperature and composite ratio on the degradation of methyl orange (MO) was investigated. ZnO prepared with a composite ratio of 4:1 and calcination temperature of 400 °C exhibited 99.70% removal rate for MO. The effect of operation parameters on the degradation was also studied. Results showed that the removal rate of azo dyes increased with the increased dosage of catalyst and decreased initial concentration of azo dyes and the acidic condition is favorable for degradation. Furthermore, the kinetics and scavengers of the reactive species during the degradation were also investigated. It was found that the degradation of azo dyes fitted the first-order kinetics and superoxide ions were the main species. The proposed photocatalyst can efficiently and rapidly degrade azo dyes; thus, this economical and environment-friendly photocatalyst can be applied to the treatment of wastewater contaminated with synthetic dyes.

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“…It has been confirmed that the photodegradation of organic dye pollutants in the semiconductor catalysts is due to the presence of active species, including hydroxyl radical ⋅ OH , photogenerated hole h + , and superoxide anion radical [35]. According to the obtained results, the mechanisms underlying the photocatalytic activity of tree-like ZnO/Si nanowire arrays towards the degradation of MB dye may be described as follows and be schematically illustrated in Fig.…”

Section: Resultsmentioning

confidence: 79%

Synthesis of ZnO/Si Hierarchical Nanowire Arrays for Photocatalyst Application

Yan

Lin

et al. 2017

Nanoscale Res Lett

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ZnO/Si nanowire arrays with hierarchical architecture were synthesized by solution method with ZnO seed layer grown by atomic layer deposition and magnetron sputtering, respectively. The photocatalytic activity of the as-grown tree-like arrays was evaluated by the degradation of methylene blue under ultraviolet light at ambient temperature. The comparison of morphology, crystal structure, optical properties, and photocatalysis efficiency of the two samples in different seeding processes was conducted. It was found that the ZnO/Si nanowire arrays presented a larger surface area with better crystalline and more uniform ZnO branches on the whole sidewall of Si backbones for the seed layer by atomic layer deposition, which gained a strong light absorption as high as 98% in the ultraviolet and visible range. The samples were proven to have a potential use in photocatalyst, but suffered from photodissolution and memory effect. The mechanism of the photocatalysis was analyzed, and the stability and recycling ability were also evaluated and enhanced.Electronic supplementary materialThe online version of this article (doi:10.1186/s11671-016-1803-0) contains supplementary material, which is available to authorized users.

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One-step pyrolytic synthesis of ZnO nanorods with enhanced photocatalytic activity and high photostability under visible light and UV light irradiation

Cited by 147 publications

References 52 publications

Influence of interface combination of RGO-photosensitized SnO 2 @RGO core-shell structures on their photocatalytic performance

Influence of interface combination of RGO-photosensitized SnO 2 @RGO core-shell structures on their photocatalytic performance

Preparation of ZnO Photocatalyst for the Efficient and Rapid Photocatalytic Degradation of Azo Dyes

Synthesis of ZnO/Si Hierarchical Nanowire Arrays for Photocatalyst Application

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