Fe2O3–AgBr nonwoven cloth with hierarchical nanostructures as efficient and easily recyclable macroscale photocatalysts

RSC Advances ◽  
2015 ◽  
Vol 5 (15) ◽  
pp. 10951-10959 ◽  
Author(s):  
Huihui Zhao ◽  
Lisha Zhang ◽  
Xiaodong Gu ◽  
Shijie Li ◽  
Bo Li ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hierarchical Nanostructures ◽  
Nonwoven Cloth ◽  
Calcination Method

The Fe2O3–AgBr nonwoven cloth with hierarchical nanostructures synthesized by an electrospinning–calcination method exhibits efficient photocatalytic activity and easy recycling features.

Preparation of magnetically separable and recyclable carbon dots/NiCo2O4 composites with enhanced photocatalytic activity for the degradation of tetracycline under visible light

2018 ◽  
Vol 5 (6) ◽  
pp. 1438-1444 ◽  
Author(s):  
Jinhui Jiang ◽  
Weilong Shi ◽  
Feng Guo ◽  
Songliu Yuan
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Carbon Dots ◽  
Magnetic Composite ◽  
Composite Photocatalysts ◽  
One Step ◽  
Magnetically Separable ◽  
Calcination Method

CDs/NiCo2O4 magnetic composite photocatalysts with enhanced photocatalytic activity were fabricated through a one-step calcination method.

scholarly journals Crystalline phase regulation of anatase–rutile TiO2 for the enhancement of photocatalytic activity

RSC Advances ◽  
2020 ◽  
Vol 10 (71) ◽  
pp. 43592-43598
Author(s):  
Kuang Wang ◽  
Yan Zhuo ◽  
Jiayi Chen ◽  
Dawei Gao ◽  
Yu Ren ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Photocatalytic Activity ◽  
Nitric Acid ◽  
Crystalline Phase ◽  
Crystalline Phases ◽  
Rutile Tio2 ◽  
Potassium Titanate ◽  
Phase Regulation ◽  
Calcination Method

Biphasic TiO2 with adjustable crystalline phases was prepared by the hydrothermal-calcination method assisted by nitric acid (HNO3) and hydrogen peroxide (H2O2), using potassium titanate oxalate (K2TiO(C2O4)2) as the titanium source.

scholarly journals Preparation of g-C3N4/MoS2 Composite Material and Its Visible Light Catalytic Performance

2021 ◽  
Author(s):  
Yu Fan ◽  
Yan-ning Yang ◽  
Chen Ding
Keyword(s):  
Electron Microscopy ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Photoelectron Spectroscopy ◽  
Photogenerated Electron ◽  
Catalytic Performance ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Calcination Method

Abstract The g-C3N4 nanosheet was prepared by calcination method, the MoS2 nanosheet was prepared by hydrothermal method. The g-C3N4/MoS2 composites were prepared by ultrasonic composite in anhydrous ethanol. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible spectroscopy (UV-Vis), and photoluminescence (PL) techniques were used to characterize the materials. The photocatalytic degradation of Rhodamine B (Rh B) by g-C3N4/MoS2 composites with different mass ratios was investigated under visible light. The results show that a small amount of MoS2 combined with g-C3N4 can significantly improve photocatalytic activity. The g-C3N4/MoS2 composite with a mass ratio of 1:8 has the highest photocatalytic activity, and the degradation rate of Rh B increases from 50% to 99.6%. The main reason is that MoS2 and g-C3N4 have a matching band structure. The separation rate of photogenerated electron-hole pairs is enhanced. So the g-C3N4/MoS2 composite can improve the photocatalytic activity. The photocatalytic mechanism was proposed through the active matter capture experiment.

Characteristic and photocatalytic performance of magnetic photocatalyst β-Bi2O3/MnxZn1−xFe2O4 synthesized by hydrothermal and calcination method

2021 ◽  
Author(s):  
Qiyuan Zhang ◽  
Yahan Yang ◽  
Yong Cheng ◽  
Longjun Xu ◽  
Chenglun Liu
Keyword(s):  
Magnetic Field ◽  
Photocatalytic Activity ◽  
Degradation Rate ◽  
Photocatalytic Performance ◽  
Photocatalytic Efficiency ◽  
Magnetic Photocatalyst ◽  
Magnetization Saturation ◽  
Excellent Photocatalytic Activity ◽  
Calcination Method ◽  
Optimum Sample

A magnetic photocatalyst [Formula: see text]-Bi2O3/Mn[Formula: see text]Zn[Formula: see text]Fe2O4 (Bi2O3/MZF) was fabricated by hydrothermal and calcination method, and characterized by XRD, FTIR, XPS and SEM, BET and VSM. The photocatalytic efficiency was measured by the degradation experiment of Rhodamine B (RhB). The degradation rate of the optimum sample Bi2O3/MZF (10 wt.%) could reach 96.8% after 3 h under visible light, and was improved significantly compared with pure [Formula: see text]-Bi2O3 due to the larger pore size (11.76 nm) and specific surface area (17.87 m2 ⋅ g[Formula: see text]. Meanwhile, the Bi2O3/MZF (10 wt.%) could be recovered under the external magnetic field due to its high magnetization saturation (9.22 emu ⋅ g[Formula: see text]. After reusing three times, the Bi2O3/MZF could still maintain the excellent photocatalytic activity and structural stability.

Fine control over the morphology and photocatalytic activity of 3D ZnO hierarchical nanostructures: capping vs. etching

RSC Advances ◽  
2015 ◽  
Vol 5 (69) ◽  
pp. 56232-56238 ◽  
Author(s):  
Jawayria Mujtaba ◽  
Hongyu Sun ◽  
Fang Fang ◽  
Mashkoor Ahmad ◽  
Jing Zhu
Keyword(s):  
Photocatalytic Activity ◽  
Citric Acid ◽  
Potassium Hydroxide ◽  
Room Temperature ◽  
Hierarchical Structures ◽  
Capping Agent ◽  
Hierarchical Nanostructures ◽  
Fine Control

ZnO 3D hierarchical structures with different morphologies can be selectively synthesized at room temperature by using potassium hydroxide and citric acid as an etchant and capping agent, respectively.

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