Study on the photocatalysis performance and degradation kinetics of X-3B over modified titanium dioxide

Qi, Xinhua; Wang, Zhonghua; Zhuang, Yanpei; Yu, Ying; Li, Jialing

doi:10.1016/j.jhazmat.2004.11.007

Cited by 48 publications

(22 citation statements)

References 20 publications

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“…Some k values of photodegradation of dyes in photocatalysis without microwave irradiation are listed in Table 3. Compared to reported k values in the literature ranging from 0.39 to 5.085 mg/L/ min for dye pollutants [19,21,22,28e30], the value 8.9 mg/ L/min in TiO 2 /MWL appears higher. This indicates that microwave irradiation accelerates the reaction between X-3B and hydroxyl radicals.…”

Section: Influence Of Initial Concentration Of X-3bcontrasting

confidence: 70%

Microwave assisted photocatalytic degradation of high concentration azo dye Reactive Brilliant Red X-3B with microwave electrodeless lamp as light source

Zhang

Wang

2007

Dyes and Pigments

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Section: Influence Of Initial Concentration Of X-3bcontrasting

confidence: 70%

Microwave assisted photocatalytic degradation of high concentration azo dye Reactive Brilliant Red X-3B with microwave electrodeless lamp as light source

Zhang

Wang

2007

Dyes and Pigments

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“…TiO 2 has been the most extensively investigated semiconductor for the photocatalytic oxidation of a variety of dyes (Qi et al 2005, Khataee et al 2009, Chebli et al 2011. It oxidizes organic pollutants through highly reactive oxygen species that is generated by photoexcitation (Fujishima et al 2000, Daneshvar et al 2003, Rivas et al 2012.…”

Section: Nanostructured Materialsmentioning

confidence: 99%

Recent advances and prospects of catalytic advanced oxidation process in treating textile effluents

Buthiyappan

Raman

Daud

2016

Reviews in Chemical Engineering

243

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AbstractIn the past few years, there have been many researches on the use of different types of homogenous catalyst for the degradation of textile wastewater in conventional advanced oxidation processes (AOPs). However, homogenous AOPs suffer from few limitations, including large consumption of chemicals, acidic pH, high cost of hydrogen peroxide, generation of iron sludge, and necessity of post-treatment. Therefore, recently, there have been more researches that focus on improving the performance of conventional AOPs using heterogeneous catalysts such as titanium dioxide, nanomaterials, metal oxides, zeolite, hematite, goethite, magnetite, and activated carbon (AC). Besides, different supports such as AC that have been incorporated with transition metals and clays have been proven to have excellent catalytic activity in AOPs. This paper presents a comprehensive review of advances and prospects of catalytic AOPs for the decontamination of a wide range of synthetic and real textile wastewater. This review provides an up-to-date critical review of the information on the degradation of various textile dyes by a wide range of heterogeneous catalysts and adsorbents. The future challenges of AOPs, including chemical consumption, toxicity assessment, reactor design, and limitation of catalysts, are discussed in this paper. In addition, this paper also discusses the presence of ions, generation of by-products, and industrial applications of AOPs. Special emphasis is given to recent studies and large-scale combination of AOPs for wastewater treatment. This review paper concludes that more studies are needed for the kinetics, reactor design, and modeling of hybrid AOPs and the production of their corresponding intermediate products and secondary pollutants. A better economic model should also be developed to predict the cost of AOPs, as the treatment cost varies with dyes and textile effluents.

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“…As it was seen that the calcination temperature had a significant effect on the activity of ZrO 2 / ZnO and the optimal calcination temperature was 350°C. The calcination temperature is one of the significant factors influencing photocatalyst's activities [18,19]. In order to find the optimal calcination temperature, ZrO 2 /ZnO samples calcinated for 3.5 h at 100°C intervals in the range of 250°C to 550°C and were used to degrade 40 mg/L RBR X-3B for 60 min under the irradiation of 254 nm UV.…”

Section: Effect Of Calcination Temperaturementioning

confidence: 99%

A simple and cheap method for preparation of coupled ZrO2/ZnO with high photocatalytic activities

Wang

Zhang

2007

Front. Environ. Sci. Eng. China

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The objective of this study was to prepare a new photocatalyst with high activities for degradation of organic pollutants. Coupled ZrO 2 /ZnO photocatalyst was prepared with a simple precipitation method with cheap raw materials zinc acetate and zirconium oxychloride, and was characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Reactive brilliant red X-3B was used as a model compound to investigate the photocatalytic activity of synthesized catalysts in water under 254 nm UV irradiation. Results show that the optimal calcination temperature and coupling molar ratio of Zr were 350°C and 2.5%, respectively. At the calcination temperature of 350°C, ZrO 2 was dispersed on the surface of hexagonal ZnO in the form of amorphous clusters. The particle size of ZrO 2 /ZnO decreased with the decrease of calcination temperature and the increase of Zr coupling amount. ZrO 2 /ZnO has better photocatalytic activity for degradation of reactive brilliant red (RBR) X-3B than pure ZnO and P25-TiO 2 .

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Study on the photocatalysis performance and degradation kinetics of X-3B over modified titanium dioxide

Cited by 48 publications

References 20 publications

Microwave assisted photocatalytic degradation of high concentration azo dye Reactive Brilliant Red X-3B with microwave electrodeless lamp as light source

Microwave assisted photocatalytic degradation of high concentration azo dye Reactive Brilliant Red X-3B with microwave electrodeless lamp as light source

Recent advances and prospects of catalytic advanced oxidation process in treating textile effluents

A simple and cheap method for preparation of coupled ZrO2/ZnO with high photocatalytic activities

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