Enhanced photocatalytic activity of Bi25FeO40–Bi2WO6 heterostructures based on the rational design of the heterojunction interface

RSC Advances ◽  
2016 ◽  
Vol 6 (31) ◽  
pp. 26038-26044 ◽  
Author(s):  
Lei Zhang ◽  
Yue Zou ◽  
Jian Song ◽  
Cheng-Ling Pan ◽  
Shao-Ding Sheng ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Rational Design ◽  
Hydrothermal Process ◽  
Facile Hydrothermal Process

Based on the rational design of heterojunction interface, a novel and efficient Bi25FeO40–Bi2WO6 heterostructure photocatalyst was successfully constructed by a facile hydrothermal process.

scholarly journals Synthesis and enhanced photocatalytic performance of 0D/2D CuO/tourmaline composite photocatalysts

2020 ◽  
Vol 11 ◽  
pp. 407-416 ◽  
Author(s):  
Changqiang Yu ◽  
Min Wen ◽  
Zhen Tong ◽  
Shuhua Li ◽  
Yanhong Yin ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Organic Contaminants ◽  
Hydrothermal Process ◽  
Charge Carriers ◽  
Molecular Vibration ◽  
Surface Element ◽  
Composite Photocatalysts ◽  
Excellent Photocatalytic Activity ◽  
Photoinduced Charge ◽  
Facile Hydrothermal Process

Photocatalysis is considered to be a green and promising technology for transforming organic contaminants into nontoxic products. In this work, a CuO/tourmaline composite with zero-dimensional/two-dimensional (0D/2D) CuO architecture was successfully obtained via a facile hydrothermal process, and its photocatalytic activity was evaluated by the degradation of methylene blue (MB). Surface element valence state and molecular vibration characterization revealed that CuO chemically interacted with tourmaline via Si–O–Cu bonds. The specific surface area of the CuO/tourmaline composite (23.60 m2 g−1) was larger than that of the pristine CuO sample (3.41 m2 g−1). The CuO/tourmaline composite exhibited excellent photocatalytic activity for the degradation of MB, which was ascribed to the increase in the quantity of the adsorption-photoreactive sites and the efficient utilization of the photoinduced charge carriers. This study provides a facile strategy for the construction of 0D/2D CuO structures and the design of tourmaline-based functional composite photocatalysts for the treatment of organic contaminants in water.

Facile Preparation of the Single Crystalline In2S3 Nanosheets with Highly Efficient Photocatalytic Activity

2013 ◽  
Vol 834-836 ◽  
pp. 8-11
Author(s):  
Hao Yong Yin ◽  
Jun Hong Tang ◽  
Chun Jie Yan ◽  
Qiu Lin Nie ◽  
Dan Wu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Organic Pollutants ◽  
Hydrothermal Process ◽  
Photocatalytic Decomposition ◽  
Single Crystalline ◽  
Highly Efficient ◽  
Sem And Tem ◽  
Facile Preparation ◽  
Facile Hydrothermal Process

The single crystalline In2S3 nanosheets with highly efficient photocatalytic activity have been controllably synthesized via a facile hydrothermal process without adding any surfactant. The morphologies of the nanosheets were characterized by SEM and TEM. The results show the diameter of the nanosheets ranges from 100nm to 400nm. The photocatalytic decomposition of methyl orange on the catalyst shows it has much higher photoactivity than that of nanoTiO2 which means it may be more capable to be used as photocatalyst in decomposition of organic pollutants.

Photocatalytic Hydrogen Evolution over Cr3+Doped Porous CdIn2S4 Photocatalysts under Visible Light Irradiation

2012 ◽  
Vol 486 ◽  
pp. 181-186
Author(s):  
Xue Feng Bai ◽  
Jin Shu Li
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Evolution ◽  
Doping Concentration ◽  
Hydrothermal Process ◽  
Sodium Dodecyl ◽  
Reflectance Spectroscopy ◽  
Photocatalytic Hydrogen Evolution ◽  
Micro Morphology ◽  
Facile Hydrothermal Process ◽  
Good Optical Property

A series of Cr3+doped porous CdIn2S4photocatalysts with good optical property were synthesized via a facile hydrothermal process using sodium dodecyl sulfate (SDS) as template. The above-prepared photocatalysts were characterized by XRD, field emission scanning electron microscopy (FESEM), UV-Vis diffusive reflectance spectroscopy (DRS) and XPS. The influences of Cr3+doping concentration on the morphology and photocatalytic activity of CdIn2S4photocatalysts were investigated. The results demonstrated that the presence of Cr3+doping in the CdIn2S4photocatalyst had significantly influence on the crystal structure, micro-morphology, e--h+recombination and photocatalytic activity. The photocatalytic hydrogen evolution of CdIn2S4was enhanced by doping, and the highest rate of hydrogen evolution of 758.8 μmol/(h·g) over Cr3+(0.5%)-CdIn2S4was observed.

scholarly journals Fast and Efficient Removal of Uranium onto a Magnetic Hydroxyapatite Composite: Mechanism and Process Evaluation

Processes ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 1927
Author(s):  
Tao Ou ◽  
Hairong Peng ◽  
Minhua Su ◽  
Qingpu Shi ◽  
Jinfeng Tang ◽  
...  
Keyword(s):  
Crystalline Phase ◽  
Rational Design ◽  
Cobalt Ferrite ◽  
Hydrothermal Process ◽  
Maximum Adsorption Capacity ◽  
Efficient Removal ◽  
Hydroxyapatite Composite ◽  
Main Crystalline Phase ◽  
Short Time ◽  
Facile Hydrothermal Process

The exploration and rational design of easily separable and highly efficient sorbents with satisfactory capability of extracting radioactive uranium (U)-containing compound(s) are of paramount significance. In this study, a novel magnetic hydroxyapatite (HAP) composite (HAP@ CoFe2O4), which was coupled with cobalt ferrite (CoFe2O4), was rationally designed for uranium(VI) removal through a facile hydrothermal process. The U(VI) ions were rapidly removed using HAP@ CoFe2O4 within a short time (i.e., 10 min), and a maximum U(VI) removal efficiency of 93.7% was achieved. The maximum adsorption capacity (Qmax) of the HAP@CoFe2O4 was 338 mg/g, which demonstrated the potential of as-prepared HAP@CoFe2O4 in the purification of U(VI) ions from nuclear effluents. Autunite [Ca(UO2)2(PO4)2(H2O)6] was the main crystalline phase to retain uranium, wherein U(VI) was effectively extracted and immobilized in terms of a relatively stable mineral. Furthermore, the reacted HAP@CoFe2O4 can be magnetically recycled. The results of this study reveal that the suggested process using HAP@CoFe2O4 is a promising approach for the removal and immobilization of U(VI) released from nuclear effluents.

Novel α-FeOOH Nanorods/Ag3PO4 Semiconductor Composites with Enhanced Photocatalytic Activity and Stability

NANO ◽  
2016 ◽  
Vol 11 (06) ◽  
pp. 1650071 ◽  
Author(s):  
Wei Zhang ◽  
Chao Hu ◽  
Jie Tan ◽  
Zhujun Fan ◽  
Fangli Chi ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Hydrothermal Process ◽  
Ultra Violet ◽  
Electron Pairs ◽  
Violet Light ◽  
Photocatalytic Activities ◽  
Composite Formula ◽  
Facile Hydrothermal Process

The composite [Formula: see text]-FeOOH nanorods/Ag3PO4 photocatalyst has been successfully fabricated through a facile hydrothermal process combined with a successive in situ precipitation technique. The SEM and TEM images show that Ag3PO4 particles have been successfully loaded on the surface of FeOOH nanorods. The photocatalytic activities of the [Formula: see text]-FeOOH/Ag3PO4 composite were investigated for their efficiency on the degradation of Rhodamine B (RhB) under ultra-violet light and visible light irradiation, and the results showed that the [Formula: see text]-FeOOH/Ag3PO4 composite possessed remarkable photocatalytic activities. The enhanced photocatalytic activity can be attributed to the strong absorption in visible light and the effective separation of photogenerated hole–electron pairs between Ag3PO4 and [Formula: see text]-FeOOH.

scholarly journals Rational design of asymmetric supercapacitors via a hierarchical core–shell nanocomposite cathode and biochar anode

RSC Advances ◽  
2019 ◽  
Vol 9 (72) ◽  
pp. 42543-42553 ◽  
Author(s):  
Meiqing Fan ◽  
Xu Zeng ◽  
Xiaodong Yang ◽  
Xin Zhang ◽  
Bo Ren
Keyword(s):  
Rational Design ◽  
Hydrothermal Process ◽  
Core Shell ◽  
Asymmetric Supercapacitors ◽  
Facile Hydrothermal Process

Hierarchical MnO2 nanosheets standing on hollow NiO microspheres have been designed by a facile hydrothermal process. Furthermore, asymmetric supercapacitors via core/shell NiO/MnO2 cathode and biochar anode were assembled.

Rational design and preparation of few-layered MoSe2 nanosheet@C/TiO2 nanobelt heterostructures with superior lithium storage performance

RSC Advances ◽  
2016 ◽  
Vol 6 (28) ◽  
pp. 23161-23168 ◽  
Author(s):  
Hanshuo Wu ◽  
Yuxin Wu ◽  
Xi Chen ◽  
Yongjin Ma ◽  
Mingquan Xu ◽  
...  
Keyword(s):  
Rational Design ◽  
Hydrothermal Process ◽  
Lithium Storage ◽  
Storage Performance ◽  
Facile Hydrothermal Process

A heterostructure of MoSe2 nanosheets decorated on C/TiO2 nanobelts was successfully fabricated through a facile hydrothermal process with the assistance of glucose.

Preparation, Characterization and Photocatalytic Activity of F, Fe-Codoped Nano-TiO2

2013 ◽  
Vol 448-453 ◽  
pp. 169-173
Author(s):  
Chun Yan Yan ◽  
Wen Tao Yi
Keyword(s):  
Photocatalytic Activity ◽  
Diffuse Reflectance Spectroscopy ◽  
Uv Light ◽  
Hydrothermal Process ◽  
Neutral Red ◽  
Reaction Model ◽  
X Ray Diffraction ◽  
Pseudo First Order Reaction ◽  
Adsorption Desorption ◽  
Desorption Method

Pure and F, Fe-codoped TiO2 were prepared by sol-hydrothermal process, in which titanium (IV) n-butoxide, Fe (NO3)2·6H2O and NH4F were used as precursors. And the samples were characterized by X-ray diffraction (XRD), UV-vis diffuse reflectance spectroscopy (DRS), scanning electron microscopy (SEM), and N2 adsorption-desorption method. The results showed that the F, Fe-codoped samples were principally single-phase anatase structures, and the particles possessed higher BET area than that of pure TiO2. The photocatalytic activity and reusability of the catalysts under UV light (365nm) was investigated with neutral red as the model compound. The results showed that F (2.0%), Fe (4.0%) codoped TiO2 had the highest photocatalytic activity among all as-prepared samples. The kinetic study showed that this photocatalytic process coincided with the Langmuir-Hinshelwood (L-H) pseudo first order reaction model.

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