Hydrothermal and post-heat treatments of TiO2/ZnO composite powder and its photodegradation behavior on methyl orange

Xu, Xingming; Wang, Jianfei; Tian, Jing; Wang, Xin; Dai, Jinhui; Liu, Xiaoyun

doi:10.1016/j.ceramint.2011.03.067

Cited by 27 publications

(14 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Modification may be performed by formation hybrid materials [26,28,33]. Xu et al [8] developed the synthesis of a TiO 2 -ZnO oxide system based on the principles of the sol-gel and hydrothermal methods. A key part of their work was the evaluation of the photocatalytic properties of the resulting materials in the decomposition of methyl orange (C.I.…”

Section: Methods Of Synthesis Of Titania-based Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Titania-Based Hybrid Materials with ZnO, ZrO2 and MoS2: A Review

2018

View full text Add to dashboard Cite

Titania has properties that enable it to be used in a variety of applications, including self-cleaning surfaces, air and water purification systems, hydrogen evolution, and photoelectrochemical conversion. In order to improve the properties of titanium dioxide, modifications are made to obtain oxide/hybrid systems that are intended to have the properties of both components. In particular, zinc oxide, zirconia and molybdenum disulfide have been proposed as the second component of binary systems due to their antibacterial, electrochemical and photocatalytic properties. This paper presents a review of the current state of knowledge on the synthesis and practical utility of TiO2-ZnO and TiO2-ZrO2 oxide systems and TiO2-MoS2 hybrid materials. The first part focuses on the hydrothermal method; then a review is made of the literature on the synthesis of the aforementioned materials using the sol-gel method. In the last section, the literature on the electrospinning method of synthesis is reviewed. The most significant physico-chemical, structural and dispersive-morphological properties of binary hybrid systems based on TiO2 are described. A key aim of this review is to indicate the properties of TiO2-ZnO, TiO2-ZrO2 and TiO2-MoS2 hybrid systems that have the greatest importance for practical applications. The variety of utilities of titania-based hybrid materials is emphasized.

show abstract

Section: Methods Of Synthesis Of Titania-based Materialsmentioning

confidence: 99%

“…It is a well-known semiconductor with excellent photocatalytic properties, which has been widely used in environmental pollutant elimination [6,7], antibacterial dopes, self-cleaning surface, etc. [8]. Its unique antibacterial properties make it a candidate for applications in medical devices and sanitary ware surfaces [9].…”

Section: Introductionmentioning

confidence: 99%

Titania-Based Hybrid Materials with ZnO, ZrO2 and MoS2: A Review

2018

View full text Add to dashboard Cite

show abstract

“…The morphological analysis showed that as the temperature of thermal treatment increased, the diameter of the particles shifted towards higher values, as a result of their sintering and greater agglomeration Oghbaei and Mirzaee 2010;Roy et al 1999). Xu et al (2011) used a hydrothermal method and a calcination process for the synthesis of TiO 2 -ZnO oxide systems. The products contained spherical particles with a tendency towards agglomeration; however, the materials in that study had a smaller particle size.…”

Section: Characteristics Of the Synthesized Photocatalystsmentioning

confidence: 99%

“…It has been demonstrated in the literature that the addition of ZnO inhibits the formation of the TiO 2 crystal structure (Chen et al 2014;Giannakopoulou et al 2014); therefore in our study we used a small quantity of ZnO (molar ratio TiO 2 :ZnO = 8:2). Furthermore, many researchers, such as Cheng et al (2016) and Xu et al (2011), who synthesized TiO 2 -ZnO binary oxide systems using a hydrothermal method, have shown that a small addition of ZnO does not affect the observation of the wurtzite structure on the XRD pattern. However, the additional calcination process influences the formation of the structure of zinc titanate (ZnTiO 3 ) (Tolba et al 2015).…”

Section: Characteristics Of the Synthesized Photocatalystsmentioning

confidence: 99%

Synthesis of highly crystalline photocatalysts based on TiO2 and ZnO for the degradation of organic impurities under visible-light irradiation

et al. 2019

View full text Add to dashboard Cite

A TiO 2 -ZnO binary oxide system (with molar ratio TiO 2 :ZnO = 8:2) was synthesized by a hydrothermal method, assisted by calcination at temperatures of 500, 600 and 700 °C, using zinc citrate as the precursor of ZnO. The morphology (SEM, TEM), crystalline structure (XRD, Raman spectroscopy), diffuse reflectance spectra (DRS), chemical surface composition (EDXRF), porous structure parameters (low-temperature N 2 sorption) and characteristic functional groups (FT-IR) of the TiO 2 -ZnO oxide materials were comprehensively analyzed. The novelty of this work is the observation of the coexistence of the crystalline structures of anatase and ZnTiO 3 in TiO 2 -ZnO oxide materials. Moreover, it is shown that the obtained materials absorb visible radiation. The key stage of the study was the evaluation of the photocatalytic activity of the TiO 2 -ZnO binary oxide systems in the degradation of model organic pollutants: C.I. Basic Red 1, C.I. Basic Violet 10, C.I. Basic Blue 3 and 4-nitrophenol. For all synthesized materials, a high efficiency of degradation of the model organic impurities was demonstrated. The results show that the synthesized products may be materials of interest for use in the degradation of organic pollutants. Moreover, the kinetics of the photocatalytic degradation of selected organic compounds were determined based on the Langmuir-Hinshelwood equation, assuming a pseudo-first-order (PFO) reaction.

show abstract

“…TiO 2 /SiO 2 composite has increased potential application in the field of varied photocatalysis, as they show improved photocatalytic and thermal properties simultaneously when compared to pure TiO 2 7 . Coupled semiconductor photocatalyst of TiO 2 /ZnO has been reported to enhance the photo degradation efficiency of TiO 2 catalyst and studies on improving the photocatalytic efficiency have been reported [8][9][10][11] . Zinc oxide has achieved applications in various areas such as optical, magnetic and gas sensing and apart from these, zinc compounds have been generally regarded as safe 12 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Applications of ZnO/TiO2/SiO2 Zinc (tris) Thiourea Sulfate Nanocomposite

Manoharan¹,

Venckatesh²,

Sivaraj³

2018

Orient. J. Chem

View full text Add to dashboard Cite

ZnO/TiO 2 /SiO 2 nanocomposite was synthesized using microwave assisted sol-gel method and characterized using UV-Visible spectroscopy, XRD, SEM, EDX, FT-IR and TEM analysis. XRD results showed the crystallite in anatase phase. FT-IR reports bands that appeared at 1108 and 862 cm-1which shows the formation of Si-O-Si and Zn-O-Ti bonds. SEM and EDX analysis showed the incorporation of ZnO nanoparticle with the TiO 2 /SiO 2 nanocomposite which increase the separation of electron-hole pairs and can enhance in photocatalytic activity on methylene blue dye under sunlight irradiation. Ultrasound irradiation was applied for the impregnation of ZTS nanocomposite with homogeneous distribution on cotton fabrics. The antibacterial activities of the ZTS impregnated cotton fabrics observed against Escherichia coli (Gram negative) and Staphylococcus aureus (Gram positive) cultures was significant. The effectiveness of fabric treatment is assessed by excellent Ultraviolet protection factor (UPF).

show abstract

Hydrothermal and post-heat treatments of TiO2/ZnO composite powder and its photodegradation behavior on methyl orange

Cited by 27 publications

References 24 publications

Titania-Based Hybrid Materials with ZnO, ZrO2 and MoS2: A Review

Titania-Based Hybrid Materials with ZnO, ZrO2 and MoS2: A Review

Synthesis of highly crystalline photocatalysts based on TiO2 and ZnO for the degradation of organic impurities under visible-light irradiation

Synthesis, Characterization and Applications of ZnO/TiO2/SiO2 Zinc (tris) Thiourea Sulfate Nanocomposite

Contact Info

Product

Resources

About