Anionic uranyl oxyfluorides as a bifunctional platform for highly selective ion-exchange and photocatalytic degradation of organic dyes

2018 ◽  
Vol 47 (42) ◽  
pp. 14908-14916 ◽  
Author(s):  
Zenghui Yue ◽  
Jian Lin ◽  
Mark A. Silver ◽  
Ling Han ◽  
Xiaoyun Li ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Ion Exchange ◽  
Photocatalytic Degradation ◽  
Organic Dyes ◽  
Photocatalytic Properties

Anionic uranium oxyfluorides with tunable open-volumes were synthesized and they exhibit selective ion-exchange and photocatalytic properties toward methylene blue.

Two novel donor–acceptor hybrid heterostructures with enhanced visible-light photocatalytic properties

2018 ◽  
Vol 47 (35) ◽  
pp. 12041-12045 ◽  
Author(s):  
Jian-Jun Liu ◽  
Zheng Xiang ◽  
Ying-Fang Guan ◽  
Chang-Cang Huang ◽  
Mei-Jin Lin
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Visible Light Irradiation ◽  
Organic Dyes ◽  
Metal Cations ◽  
Light Irradiation ◽  
Photocatalytic Properties ◽  
Highly Efficient ◽  
Donor Acceptor ◽  
Visible Light Photocatalytic

The ternary combination of metal cations, CuI and viologen based carboxylate leads to two donor–acceptor hybrid heterostructures, which exhibit highly efficient photocatalytic degradation activities towards organic dyes under visible light irradiation.

scholarly journals Titanium dioxide modified with manganese: physicochemical and photocatalytic properties

2021 ◽  
Vol 12 (2-2021) ◽  
pp. 214-218
Author(s):  
S. A. Safaryan ◽  
◽  
M. L. Belikov ◽  
V. A. Krysanova ◽  
◽  
...  
Keyword(s):  
Methylene Blue ◽  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Phase Composition ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Organic Dyes ◽  
Photocatalytic Properties

The article presents the results of the studies of the physicochemical and photocatalytic properties of titanium dioxide modified with manganese, by the example of decomposition of organic dyes — ferroin and methylene blue. The correlations between the specific surface area and phase composition of the composites with their photocatalytic activity are revealed.

scholarly journals Synthesis and characterisation of novel Cu(ii)-anchored biopolymer complexes as reusable materials for the photocatalytic degradation of methylene blue

RSC Advances ◽  
2020 ◽  
Vol 10 (31) ◽  
pp. 18259-18279 ◽  
Author(s):  
Murugaiyan Manimohan ◽  
Sivashanmugam Pugalmani ◽  
K. Ravichandran ◽  
Mohamed Aboobucker Sithique
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Organic Dyes ◽  
Uv Visible

Biopolymer-incorporated Cu(ii) complexes are proven to be excellent photocatalysts for the degradation of organic dyes (methylene blue) under UV-visible light.

Highly efficient photocatalytic degradation of organic dyes by Cu doped ZnO nanostructures

2015 ◽  
Vol 17 (38) ◽  
pp. 25172-25181 ◽  
Author(s):  
Sini Kuriakose ◽  
Biswarup Satpati ◽  
Satyabrata Mohapatra
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Photocatalytic Degradation ◽  
Organic Dyes ◽  
Zno Nanostructures ◽  
Highly Efficient ◽  
Doped Zno

Cu doped ZnO nanostructures exhibit highly efficient sunlight driven photocatalytic activity for degradation of methylene blue and methyl orange dyes.

scholarly journals Fluorinated and Platinized Titania as Effective Materials in the Photocatalytic Treatment of Dyestuffs and Stained Wastewater Coming from Handicrafts Factories

Catalysts ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 179 ◽  
Author(s):  
Julie Murcia ◽  
Ángela Cely ◽  
Hugo Rojas ◽  
María Hidalgo ◽  
José Navío
Keyword(s):  
Methylene Blue ◽  
Methyl Orange ◽  
Photocatalytic Degradation ◽  
Photocatalytic Performance ◽  
Natural Fibers ◽  
Textural Properties ◽  
Photocatalytic Properties ◽  
Real Wastewater ◽  
Commercial Tio2

In this study, commercial and lab-prepared TiO2 were modified by fluorination and platinum photodeposition; and the effect of these modifications over the physicochemical and photocatalytic properties of TiO2 was evaluated. It was found that F and Pt addition leads to the modification of the optical and textural properties of TiO2. The materials prepared were tested in the photocatalytic degradation of different organic dyestuffs such as methylene blue (MB) and methyl orange (MO); the degradation of commercial anilines employed in the staining of natural fibers was also evaluated. Photocatalysis was also studied in this work as an eco-friendly treatment of wastewater coming from handicrafts factories. In general it was observed that the effectiveness of the photocatalytic treatment strongly depends on the substrate to be degraded, thus, fluorinated and platinized commercial Titania (Pt-F-P25) showed the best photocatalytic performance in the MB and MO photodegradation and in contrast, in the case of the anilines the highest degradation was obtained over commercial TiO2 fluorinated (F-P25). These results can be explained by differences observed in the structure and in the adsorption of these dyestuffs over the photocatalysts surfaces. F-P25 photocatalyst also demonstrated to be the best material for the treatment of real wastewater coming from handicrafts factories.

Controllable synthesis of peapod-like TiO2@GO@C electrospun nanofiber membranes with enhanced mechanical properties and photocatalytic degradation abilities towards methylene blue

2020 ◽  
Vol 44 (9) ◽  
pp. 3755-3763 ◽  
Author(s):  
Qi Zhang ◽  
Xing Chen ◽  
Haiyan Wang ◽  
Xuming Bai ◽  
Xiaonan Deng ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Carrier Transport ◽  
Photocatalytic Properties ◽  
Electrospun Nanofiber ◽  
Controllable Synthesis ◽  
Nanofiber Membranes

Electrospun peapod-like TiO2@GO@C nanofiber membranes enhance their photocatalytic properties for the improved crystallinity of TiO2 and carrier transport, and simultaneously improve their mechanical properties.

scholarly journals Synthesis and photocatalytic properties of three dimensional laminated structure anatase TiO2/nano-Fe0 with exposed (001) facets

RSC Advances ◽  
2020 ◽  
Vol 10 (20) ◽  
pp. 11823-11830
Author(s):  
Yeshuo Dong ◽  
Fanjun Meng
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Photocatalytic Performance ◽  
Three Dimensional ◽  
Anatase Tio2 ◽  
Photocatalytic Properties ◽  
Laminated Structure

Three dimensional laminated structure anatase TiO2/nano-Fe0 with exposed (001) facets were successfully synthesized, which exhibited higher photocatalytic performance in the photocatalytic degradation of methylene blue.

Effect of Er3+ Doped on Photocatalytic Properties of ZnO-TiO2 Nanofibers

2013 ◽  
Vol 591 ◽  
pp. 258-262 ◽  
Author(s):  
Meng Wang ◽  
Ming Hao Fang ◽  
Chao Tang ◽  
Zhao Hui Huang ◽  
Yang Ai Liu ◽  
...  
Keyword(s):  
Methylene Blue ◽  
High Temperature ◽  
Photocatalytic Degradation ◽  
Calcination Temperature ◽  
Composite Nanofibers ◽  
Raw Materials ◽  
Photocatalytic Properties ◽  
Doping Content ◽  
Doped Zno ◽  
Calcined Temperature

Er3+ doped ZnO-TiO2 nanofibers with diameter of 100～200 nm were prepared by electrospinning mothed after calcined at high temperature, using polyvinylpyrrolidone(PVP), Zn(NO3)2·6H2O, Er(NO3)3·5H2O, Ti(OC4H9)4 asraw materials. The composite nanofibers were characterized by XRD, SEM, and UV-V respectively. Effects of different calcined temperatures on structure and photocatalytic degradation were investigated. The results indicated that the crystallinity becomes better with the increasing of calcination temperature. The composite nanofibers had the best effects of photocatalytic degradation of methylene blue, when Er3+ doping content was 0.3 wt.% and calcined temperature was 500 °C.

Structural, Morphological and Optical Bandgap Analysis of Multifunction Applications of Y2O3 -ZnO Nanocomposites : Varistors and Visible Photocatalytic Degradations of Wastewater

2021 ◽  
Author(s):  
T.H AlAbdulaal ◽  
Manal AlShadidi ◽  
Mai Hussien ◽  
Ganesh Vanga ◽  
Abdel-Fatah Bouzidi ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Rhodamine B ◽  
Diffuse Reflectance Spectroscopy ◽  
Organic Dyes ◽  
Low Cost ◽  
Combustion Method ◽  
Ac Electrical Conductivity ◽  
Nanoparticle Structure ◽  
Yttrium Doping

Abstract In this study, a combustion method as an efficient, easy, low-cost, and eco-friendly technique was used to synthesize nano-ZnO as a matrix with different yttrium doping ratios with different doping concentrations. Not only X-ray diffraction (XRD), but also scanning electron microscopy (SEM), and Fourier transformation Infrared spectroscopy (FT-IR) technique employed to characterize the structural and surface morphology of the Y2O3-ZnO nanocomposites. The obtained results supported ZnO's growth from crystalline to satisfactory nanoparticle structure by changing the yttrium doping concentrations inside ZnO nanoparticles. Moreover, UV-Vis diffuse reflectance spectroscopy, AC electrical conductivity, and current-voltage characteristics were considered to characterize the effects of yttrium doping on the energy bandgaps and electrical/dielectric properties and discussed the parameters of the ceramic varistors of the studied Y2O3-ZnO nano-complex oxides. The photocatalytic degradation efficiency of phenol, Methylene Blue, and Rhodamine B was investigated using all prepared Y2O3-ZnO nanostructured samples. As the yttrium doping ratios increased, the photocatalytic efficiency increased. After the addition of moderate Y3+ ions-doping, Further generation of hydroxyl radicals over ZnO. For Y2O3-ZnO (S5), the optimal photocatalyst is a degradation of 100 % of phenol, Methylene Blue, and Rhodamine B solutions compared to 80% of photocatalysis for ZnO stand alone. The prepared Y2O3-ZnO nanostructured materials are considered novel potential candidates in broad nano-applications ranging from biomedical and photocatalytic degradation for organic dyes and phenol to environmental and varistor applications.

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