Graphene oxide and reduced graphene oxide supported ZnO nanochips for removal of basic dyes from the industrial effluents
18 May 2021-Fullerenes Nanotubes and Carbon Nanostructures (Informa UK Limited)-Vol. 29, Iss: 11, pp 915-928
TL;DR: In this paper, the synthesis of highly active and controllable catalysts from GAs was reported, and they were shown to have high potential to build multifunctional catalysts.
Abstract: Currently, graphene and its functional derivatives are in high demand due to their unprecedented potential to build multifunctional catalysts. Here, we report the synthesis of highly active and che...
Citations
More filters
TL;DR: In this article, an innovative design was developed to improve the stability of MXene and to reduce the resistivity and photocorrosion of semiconductive photocatalysts.
51 citations
TL;DR: In this paper, a facile sol-gel technique was adopted to synthesize a nanostructured ZnO/SrZnO2 composite that acts as an efficient visible light-triggered photocatalyst.
38 citations
TL;DR: In this article, the micro-emulsion approach was adopted to fabricate rare earth and transition metal (Cu) co-doped barium hexaferrite (Ba1-xNdxFe12-yCuyO19) nanoparticles (NPs).
37 citations
TL;DR: In this article, the effect of Gd+3 ions substitution and RGO support on V2O5 was studied by different analytical techniques, including X-ray diffraction (XRD) results showed the orthorhombic crystal structure of synthesized samples with crystallize size in range of 22-35nm.
36 citations
TL;DR: In this article, the synthesis of Gd+3 doped V2O5 nanostructures along with fabrication of GVO/MXene binary nanocomposite were characterized by XRD (X-ray diffraction), FESEM (Field emission scanning electron microscopy), EDX (Energy dispersive X-ray), BET (Brunauer Emmett Teller technique) and UV-Visible spectroscopy.
34 citations
References
More filters
TL;DR: In this article, the authors focus on interfacial processes and summarize some of the operating principles of heterogeneous photocatalysis systems, including the electron transfer and energy transfer processes in photocatalytic reactions.
Abstract: In 1972, Fujishima and Honda discovered the photocatalytic splitting of water on TiO{sub 2} electrodes. This event marked the beginning of a new era in heterogeneous photocatalysis. Since then, research efforts in understanding the fundamental processes and in enhancing the photocatalytic efficiency of TiO{sub 2} have come from extensive research performed by chemists, physicists, and chemical engineers. Such studies are often related to energy renewal and energy storage. In recent years, applications to environmental cleanup have been one of the most active areas in heterogeneous photocatalysis. This is inspired by the potential application of TiO{sub 2}-based photocatalysts for the total destruction of organic compounds in polluted air and wastewaters. There exists a vast body of literature dealing with the electron transfer and energy transfer processes in photocatalytic reactions. A detailed description of these processes is beyond the scope of this review. Here, the authors tend to focus on interfacial processes and to summarize some of the operating principles of heterogeneous photocatalysis. In section 2, the authors first look at the electronic excitation processes in a molecule and in a semiconductor substrate. The electronic interaction between the adsorbate molecule and the catalyst substrate is discussed in terms of the catalyzed ormore » sensitized photoreactions. In section 3, thermal and photocatalytic studies on TiO{sub 2} are summarized with emphasis on the common characteristics and fundamental principles of the TiO{sub 2}-based photocatalysis systems. In section 4, they address the research effort in the electronic modification of the semiconductor catalysts and its effect on the photocatalytic efficiency. Several representative examples will be presented including the Schottky barrier formation and modification at metal-semiconductor interfaces. Some concluding remarks and future research directions will be given in the final section. 160 refs.« less
10,719 citations
TL;DR: The current available technologies are reviewed and an effective, cheaper alternative for dye removal and decolourisation applicable on large scale is suggested.
4,772 citations
TL;DR: In this paper, a review of biological decolorization of dyes used in textile industries and report on progress and limitations is presented, where the ability of microorganisms to carry out dye decolorisation has received much attention.
1,915 citations
TL;DR: This paper presents a critical review of recent achievements in the modification of ZnO photocatalyst for organic contaminants degradation and recommends improvements in the heterogeneous photocatalysis under UV/visible/solar illumination.
1,646 citations
TL;DR: In this paper, the root mean square strain was determined from the interplanar spacing and strain estimated from the three models, viz, uniform deformation model, unweighted deformation stress model, and uniform density model.
Abstract: ZnO nanoparticles were prepared by coprecipitation method at 450C. X-ray diffraction result indicates that the sample is having a crystalline wurtzite phase. Transmission electron microscopy (TEM) result reveals that the ZnO sample is spherical in shape with an average grain size of about 50nm. X-ray peak broadening analysis was used to evaluate the crystalline sizes and lattice strain by the Williamson-Hall (W-H) analysis. All other relevant physical parameters such as strain, stress, and energy density values were also calculated using W-H analysis with different models, viz, uniform deformation model, uniform deformation stress model and uniform deformation energy density model. The root mean square strain was determined from the interplanar spacing and strain estimated from the three models. The three models yield different strain values; it may be due to the anisotropic nature of the material. The mean particle size of ZnO nanoparticles estimated from TEM analysis, Scherrers formula and W-H analysis is highly intercorrelated.
1,439 citations