scholarly journals Highly Efficient Ag3PO4/g-C3N4 Z-Scheme Photocatalyst for its Enhanced Photocatalytic Performance in Degradation of Rhodamine B and Phenol

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 2062
Author(s):  
Mingxi Zhang ◽  
Hanxiao Du ◽  
Juan Ji ◽  
Fengfeng Li ◽  
Y. C. Lin ◽  
...  
Keyword(s):  
Rhodamine B ◽  
Charge Separation ◽  
Degradation Rate ◽  
Photocatalytic Performance ◽  
Deposition Method ◽  
Simulated Sunlight ◽  
Light Conditions ◽  
In Situ Deposition ◽  
Degradation Activity

Ag3PO4/g-C3N4 heterojunctions, with different g-C3N4 dosages, were synthesized using an in situ deposition method, and the photocatalytic performance of g-C3N4/Ag3PO4 heterojunctions was studied under simulated sunlight conditions. The results revealed that Ag3PO4/g-C3N4 exhibited excellent photocatalytic degradation activity for rhodamine B (Rh B) and phenol under the same light conditions. When the dosage of g-C3N4 was 30%, the degradation rate of Rh B at 9 min and phenol at 30 min was found to be 99.4% and 97.3%, respectively. After five cycles of the degradation experiment for Rh B, g-C3N4/Ag3PO4 still demonstrated stable photodegradation characteristics. The significant improvement in the photocatalytic activity and stability of g-C3N4/Ag3PO4 was attributed to the rapid charge separation between g-C3N4 and Ag3PO4 during the Z-scheme charge transfer and recombination process.

Controllable in situ synthesis of BiOBrxI1−x solid solution on reduced graphene oxide with enhanced visible light photocatalytic performance

RSC Advances ◽  
2015 ◽  
Vol 5 (83) ◽  
pp. 68151-68158 ◽  
Author(s):  
Zhichong Yang ◽  
Fuxing Cheng ◽  
Xiaoping Dong ◽  
Fangming Cui
Keyword(s):  
Solid Solution ◽  
Graphene Oxide ◽  
Charge Separation ◽  
Photocatalytic Performance ◽  
In Situ Synthesis ◽  
Deposition Method ◽  
Reduced Graphene ◽  
Photocatalytic Activities ◽  
Visible Light Photocatalytic

BiOBrxI1−x–rGO solid solution photocatalysts have been developed by an in situ controllable deposition method, which possessed exceptional photocatalytic activities due to their more effective charge separation and transportation.

A PW12/Ag functionalized mesoporous silica-coated magnetic Fe3O4 core–shell composite as an efficient and recyclable photocatalyst

2021 ◽  
Author(s):  
Pan-Feng Wu ◽  
Qi Xue ◽  
Tian-Yu Wang ◽  
Shan-Jian Li ◽  
Gao-Peng Li ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Photocatalytic Performance ◽  
Core Shell ◽  
Deposition Method ◽  
Functionalized Mesoporous Silica ◽  
Recyclable Photocatalyst ◽  
Shell Composite ◽  
Magnetic Fe3o4 ◽  
Fe3o4 Core

The PW12 and Ag NP functionalized Fe3O4@SiO2@mSiO2-PW12/Ag photocatalyst was assembled via an in situ photoreduction deposition method, displaying highly efficient photocatalytic performance for photodegradation of MO and photoreduction of Cr2O72−.

scholarly journals Photocatalytic Performance of SiO2/CNOs/TiO2 to Accelerate the Degradation of Rhodamine B under Visible Light

Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1671 ◽  
Author(s):  
Weike Zhang ◽  
Yanrong Zhang ◽  
Kai Yang ◽  
Yanqing Yang ◽  
Jia Jia ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Rhodamine B ◽  
Photoelectron Spectroscopy ◽  
Degradation Rate ◽  
Photocatalytic Performance ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
X Ray ◽  
Electronic Microscope

A silicon dioxide/carbon nano onions/titanium dioxide (SiO2/CNOs/TiO2) composite was synthesized by a simple sol-gel method and characterized by the methods of X-ray diffraction (XRD), scanning electronic microscope (SEM), X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET), Fourier transform infrared (FTIR), thermogravimetric analysis (TG), differential scanning calorimeter (DSC) and UV-Vis diffuse reflectance spectra (UV-Vis DRS). In this work, the photocatalytic activity of the SiO2/CNOs/TiO2 photocatalyst was assessed by testing the degradation rate of Rhodamine B (RhB) under visible light. The results indicated that the samples exhibited the best photocatalytic activity when the composite consisted of 3% CNOs and the optimum dosage of SiO2/CNOs/TiO2(3%) was 1.5 g/L as evidenced by the highest RhB degradation rate (96%). The SiO2/CNOs/TiO2 composite greatly improved the quantum efficiency of TiO2. This work provides a new option for the modification of subsequent nanocomposite oxide nanoparticles.

Preparation of Micro-Arc Oxidation Ceramic Coating and Application in Degradation Rhodamine B

2014 ◽  
Vol 687-691 ◽  
pp. 4210-4213
Author(s):  
Hai Tao Bu ◽  
Zhao Hua Jiang ◽  
Zhong Ping Yao
Keyword(s):  
Rhodamine B ◽  
Photoelectron Spectroscopy ◽  
Degradation Rate ◽  
Ceramic Coating ◽  
Amorphous State ◽  
Electrolyte System ◽  
X Ray ◽  
Micro Arc Oxidation ◽  
Fenton System

A ceramic coating grows on the surface of Q235 carton steel in situ by the micro-arc oxidation method and the silicate electrolyte system; and the phase composition, surface topography and elementary composition of the ceramic coating are analyzed by X-ray diffractometer (XRD), scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (EDS). The results show that the ceramic coating growing on the surface of Q235 carton steel in situ presents an irregular porous structure; and the electrolyte and the element in the basal body exist in the ceramic coating in the form of amorphous state. And then, the author degrades the rhodamine B solution by the home-made ceramic coating and H2O2Fenton system, so that the degradation rate of the rhodamine B solution can reach 97%; and meanwhile, the degradation rate is not reduced along the increased using times.

scholarly journals Removal of methyl orange (MO) using carbon quantum dots (CQDs) derived from watermelon rinds

2019 ◽  
Vol 6 (1) ◽  
pp. 91-99
Author(s):  
Azrina Abd Aziz ◽  
U.R. Ramzilah
Keyword(s):  
Quantum Dots ◽  
Methyl Orange ◽  
Photocatalytic Degradation ◽  
Degradation Rate ◽  
Photocatalytic Performance ◽  
Carbon Quantum Dots ◽  
Facile Hydrothermal Method ◽  
X Ray ◽  
Degradation Activity ◽  
Scanning Electron

In this study, carbon quantum dots (CQDs) was prepared via a facile hydrothermal method. The objective for this study is to assess the performance of CQDs in photocatalytic degradation activity of methyl orange (MO) under artificial visible light source. For that reason, the prepared photocatalyst undergo further characterization by scanning electron microscope (SEM), energy dispersive X-ray spectroscope (EDX) and UV- Vis spectrophotometer (UV-VIS) to verify the morphology structure of the photocatalyst, elemental composition as well as the absorbance intensity, respectively. The results indicates that the prepared photocatalyst possess irregular porous shape with nanometre (nm) dimensions that can escalate the surface area for photocatalytic degradation activity. The elements of the photocatalyst mainly consist of carbon and oxygen as the major constituents in which necessary for photocatalytic activity with intense peak of absorbance intensity. The prepared CQDs also shows an excellent photocatalytic performance over the MO with degradation rate of 68.9% within 120 minutes.

scholarly journals Ag3PO4 Deposited on CuBi2O4 to Construct Z-Scheme Photocatalyst with Excellent Visible-Light Catalytic Performance Toward the Degradation of Diclofenac Sodium

Nanomaterials ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 959 ◽  
Author(s):  
Xiaojuan Chen ◽  
Chunmu Yu ◽  
Runliang Zhu ◽  
Ning Li ◽  
Jieming Chen ◽  
...  
Keyword(s):  
Degradation Rate ◽  
Performance Enhancement ◽  
Separation Efficiency ◽  
Diclofenac Sodium ◽  
Sodium Stearate ◽  
Photogenerated Electron ◽  
Catalytic Performance ◽  
Electron Hole ◽  
In Situ Deposition

CuBi2O4/Ag3PO4 was synthesized through a combination of hydrothermal synthesis and an in situ deposition method with sodium stearate as additives, and their textures were characterized with XRD, XPS, SEM/HRTEM, EDS, UV-Vis, and PL. Then, the photodegradation performance of CuBi2O4/Ag3PO4 toward the degradation of diclofenac sodium (DS) was investigated, and the results indicate that the degradation rate of DS in a CuBi2O4/Ag3PO4 (1:1) system is 0.0143 min−1, which is 3.6 times that in the blank irradiation system. Finally, the photocatalytic mechanism of CuBi2O4/Ag3PO4 was discussed, which follows the Z-Scheme theory, and the performance enhancement of CuBi2O4/Ag3PO4 was attributed to the improved separation efficiency of photogenerated electron–hole pairs.

High-performance photoelectrochemical water splitting of BiVO4@Co-MIm prepared by a facile in-situ deposition method

2019 ◽  
Vol 371 ◽  
pp. 885-892 ◽  
Author(s):  
Shiqian Zhou ◽  
Pengfei Yue ◽  
Jingwei Huang ◽  
Lei Wang ◽  
Houde She ◽  
...  
Keyword(s):  
Water Splitting ◽  
High Performance ◽  
Photoelectrochemical Water Splitting ◽  
Deposition Method ◽  
In Situ Deposition

Ternary AgCl/Ag/Bi2O2CO3 as novel indirect Z-scheme photocatalysts for highly efficient pharmaceuticals and dyes degradation

2019 ◽  
Vol 13 (02) ◽  
pp. 2050007
Author(s):  
Huan Yu ◽  
Haoyong Yin ◽  
Shumin Zhao ◽  
Jianying Gong ◽  
Qiulin Nie ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Rhodamine B ◽  
Photocatalytic Performance ◽  
Reduction Process ◽  
Photoelectrochemical Properties ◽  
Band Structures ◽  
Photocatalytic Mechanism ◽  
Highly Efficient ◽  
Dyes Degradation

Ternary AgCl/Ag/Bi2O2CO3 was designed as novel indirect Z-scheme photocatalysts via in situ precipitation and subsequent photo-reduction process. The morphology, structure, chemical composition, optical and photoelectrochemical properties were characterized via various methods. The photocatalyst showed highly improved photocatalytic performance for Tetracycline (TC), Rhodamine B (RhB) and Carbamazepine (CBZ) degradation. The enhanced photocatalytic performance was mainly due to the formation of ternary AgCl/Ag/Bi2O2CO3 with indirect Z-scheme structures. The possible photocatalytic mechanism was also discussed based on the trapping experiment and band structures of the photocatalyst.

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