Production of CuO–WO3 hybrids and their dye removal capacity/performance from wastewater by adsorption/photocatalysis

Dursun, Sami; Koyuncu, Suna Nur; Kaya, İsmail Cihan; Kaya, Gülcihan Güzel; Kalem, Volkan; Akyıldız, Hasan

doi:10.1016/j.jwpe.2020.101390

Cited by 62 publications

(30 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Six vibration peaks located at 169.5, 196.5, 277.5, 333.4, 692.1, and 802.0 cm −1 can be observed in the Raman spectrum. According to related literature [25,26], the peaks at 169.5 and 196.5 cm −1 are because of internal lattice vibration of the product. The vibration peaks at around 277.5 and 333.4 cm −1 correspond to bending vibration of W-O-W.…”

Section: Characterization Of the Hwhmsmentioning

confidence: 88%

Hexagonal WO3·0.33H2O Hierarchical Microstructure with Efficient Photocatalytic Degradation Activity

Wang

Huang

et al. 2021

Catalysts

View full text Add to dashboard Cite

Structural design and morphological control of semiconductors is considered to be one of the most effective ways to improve their photocatalytic degradation properties. In the present work, a hexagonal WO3·0.33H2O hierarchical microstructure (HWHMS) composed of nanorods was successfully prepared by the hydrothermal method. The morphology of the HWHMS was confirmed by field-emission scanning electron microscopy, and X-ray diffraction, Raman spectroscopy, and thermogravimetric analysis demonstrated that the synthesized product was orthorhombic WO3·0.33H2O. Owing to the unique hierarchical microstructure, the HWHMS showed larger Brunauer–Emmett–Teller (BET) surface and narrower bandgap (1.53 eV) than the isolated WO3·0.33H2O nanorods. Furthermore, the HWHMS showed enhanced photocatalytic activity for degradation of methylene blue under visible-light irradiation compared with the isolated nanorods, which can be ascribed to the narrower bandgap, larger BET specific surface area, and orthorhombic phase structure of the HWHMS. This work provides a potential protocol for construction of tungsten trioxide counterparts and materials similar to tungsten trioxide for application in gas sensors, photocatalysts, electrochromic devices, field-emission devices, and solar-energy devices.

show abstract

Section: Characterization Of the Hwhmsmentioning

confidence: 88%

Hexagonal WO3·0.33H2O Hierarchical Microstructure with Efficient Photocatalytic Degradation Activity

Wang

Huang

et al. 2021

Catalysts

View full text Add to dashboard Cite

show abstract

“…Among all these methods, adsorption proved itself as a promising removal method credited to the merits of cost effectiveness, high designation flexibility, high performance in removal of small molecules, least fluctuations, resistance to toxic matter, low discharge ratio and easy handling [12][13][14]. For dye removal, various types of adsorbents are extensively studied including activated carbon [15], metal oxides [16], polymers [17], zeolites [18], agricultural residues [19] CuO-ZnO tetrapodal hybrid [20], Cu-WO 3 [21] tpolydimethylsiloxane@zinc oxide tetrapod@iron oxide nanorod nanohybrid [22], ZnO-tetrapods/activated carbon (ZnO-T/AC) nanocomposite [23] and carboxylated cellulose nanofibril films [24]. But among them, few adsorbents face some difficulties like low adsorption capacity, insufficient extraction and issues of recycling and reuse [25].…”

Section: Introductionmentioning

confidence: 99%

Adsorption removal of Congo red onto L-cysteine/rGO/PANI nanocomposite: equilibrium, kinetics and thermodynamic studies

Razzaq

Akhtar

Zulfiqar

et al. 2021

Journal of Taibah University for Science

View full text Add to dashboard Cite

In this paper, adsorption of Congo red (CR) onto L-cysteine decorated with reduced graphene oxide/polyaniline composite at room temperature was investigated. The morphology and structure properties of as-prepared nanocomposite were verified by UV-visible spectroscopy (UV-visible), powder X-ray diffraction (XRD), Fourier transform infrared spectrophotometry (FTIR), scanning electron microscopy (SEM), and Brunauer Emmett Teller (BET) studies. Effect ofabsorbent dosage, contact time, initial dye concentration and temperature were studied and optimal conditions for the adsorption process of Congo red dye were found. The obtained results indicated that isotherms data fitted well to Langmuir model. While kinetics data fitted well to the pseudo-second-order kinetic equation and the adsorption process was generally governed via intra-particle diffusion. Thermodynamic data showed that adsorption process of CR was endothermic and spontaneous in nature. At optimal conditions, the maximum adsorption capacity of CR was calculated and found to be 56.57 mg/g, which shows that L-cysteine functionalized reduced graphene oxide/polyaniline based nanocomposite can be efficiently used for wastewater management.

show abstract

“…Recently, electrospun one-dimensional semiconductor metal oxide nanostructures, predisposed by their unique optical and electrical properties, have attracted the attention of researchers studying photocatalytic pollutant decomposition processes of TiO 2 , ZnO and SnO 2 , whose energy gap width, radiation absorption range and mobility rate can be controlled by the parameters of the manufacturing process (Figure 9, Tables 3 and 4) [86,[103][104][105][106][107]. [111] of the photocatalytic properties of ZnO/SnO 2 nanofiber with and without the addition of the P123 precursor, which resulted in a much higher photocatalytic activity in the degradation of methyl orange (MO) in UV light of the composite nanofibers with the addition of P123.…”

Section: Electrospun 1d Mos In Saving the Natural Environmentmentioning

confidence: 99%

A Short Review on Various Engineering Applications of Electrospun One-Dimensional Metal Oxides

Smok

Tański

2021

Materials

View full text Add to dashboard Cite

The growing scientific interest in one-dimensional (1D) nanostructures based on metal-oxide semiconductors (MOS) resulted in the analysis of their structure, properties and fabrication methods being the subject of many research projects and publications all over the world, including in Poland. The application of the method of electrospinning with subsequent calcination for the production of these materials is currently very popular, which results from its simplicity and the possibility to control the properties of the obtained materials. The growing trend of industrial application of electrospun 1D MOS and the progress in modern technologies of nanomaterials properties investigations indicate the necessity to maintain the high level of research and development activities related to the structure and properties analysis of low-dimensional nanomaterials. Therefore, this review perfectly fits both the global trends and is a summary of many years of research work in the field of electrospinning carried out in many research units, especially in the Department of Engineering Materials and Biomaterials of the Faculty of Mechanical Engineering and Technology of Silesian University of Technology, as well as an announcement of further activities in this field.

show abstract

Production of CuO–WO3 hybrids and their dye removal capacity/performance from wastewater by adsorption/photocatalysis

Cited by 62 publications

References 68 publications

Hexagonal WO3·0.33H2O Hierarchical Microstructure with Efficient Photocatalytic Degradation Activity

Hexagonal WO3·0.33H2O Hierarchical Microstructure with Efficient Photocatalytic Degradation Activity

Adsorption removal of Congo red onto L-cysteine/rGO/PANI nanocomposite: equilibrium, kinetics and thermodynamic studies

A Short Review on Various Engineering Applications of Electrospun One-Dimensional Metal Oxides

Contact Info

Product

Resources

About