A Comparative Study of Photodegradation Behavior Sodium Niobate Nanowires and Microcubes

2020 ◽  
Vol 861 ◽  
pp. 221-227
Author(s):  
Chang Xu Yan ◽  
Bo Li ◽  
Jin Wang
Keyword(s):  
Catalytic Activity ◽  
Rhodamine B ◽  
Phase Structure ◽  
Photocatalytic Performance ◽  
Ferroelectric Phase ◽  
Organic Dyes ◽  
Sodium Niobate ◽  
Photo Catalytic Activity ◽  
First Order ◽  
Dyes Degradation

Sodium niobate catalysts with different morphologies of nanowires and microcubes have been prepared by hydrothermal method. The photocatalytic performance of NaNbO3 nanowires and microcubes was evaluated by degradation of rhodamine B (RhB) and cationic red X-GRL (CRX). The photodegradation reaction of organic dyes is shown to be kinetically first-order. The as-prepared NaNbO3 nanowires exhibit higher photo-catalytic activity for organic dyes degradation than NaNbO3 microcubes, which is attributed to the larger specific surface area and ferroelectric phase structure.

Surfactant-assisted synthesis of ceria–titania-rich mesoporous silica materials and their catalytic activity towards photodegradation of organic dyes

2017 ◽  
Vol 46 (29) ◽  
pp. 9577-9590 ◽  
Author(s):  
Nabanita Pal ◽  
Indrani Mukherjee ◽  
Sriparna Chatterjee ◽  
Eun-Bum Cho
Keyword(s):  
Catalytic Activity ◽  
Mesoporous Silica ◽  
Visible Light ◽  
Rhodamine B ◽  
Organic Dyes ◽  
Pivotal Role ◽  
Silica Materials ◽  
Mesoporous Silica Materials ◽  
Surfactant Assisted

A series of Ce–Ti-doped mesoporous silica materials have been prepared under basic conditions. The materials played a pivotal role in visible-light-induced degradation of toxic Rhodamine B.

scholarly journals Preparation of FeOOH/Cu with High Catalytic Activity for Degradation of Organic Dyes

Materials ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 338 ◽  
Author(s):  
Yingzhe Zhang ◽  
Junfeng Liu ◽  
Ding Chen ◽  
Qingdong Qin ◽  
Yujiao Wu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Ball Milling ◽  
Rhodamine B ◽  
High Frequency ◽  
Organic Dyes ◽  
Raw Materials ◽  
High Catalytic Activity ◽  
Phenol Red ◽  
Cu Catalyst ◽  
High Frequency Electromagnetic Field

In this study, high-frequency electromagnetic-assisted ball-milling was used to prepare FeOOH/Cu catalyst. The combined effect of the high-frequency electromagnetic field and ball-milling resulted in the complete conversion of raw materials into FeOOH/Cu nanomagnetic hybrid at ~40 °C in only 30 h. Experiments showed that Rhodamine B was completely degraded within only 3 min, which was much faster than with previously reported catalysts. The combination effect of ball milling and microwave afforded excellent catalytic activity. Furthermore, the produced catalyst could be recovered easily using an external magnetic field for reuse. The influence of pH on the catalytic activity for degrading Rhodamine B, Phenol Red, Methyl Orange, and Methylene Blue were also investigated; Rhodamine B was completely degraded at pH 9 within only 2 min.

Visible light photo-catalytic activity of C-PVA/TiO2 composites for degrading rhodamine B

2015 ◽  
Vol 324 ◽  
pp. 645-651 ◽  
Author(s):  
Haigang Yang ◽  
Jianling Zhang ◽  
Yuanqing Song ◽  
Shoubin Xu ◽  
Long Jiang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Visible Light ◽  
Rhodamine B ◽  
Photo Catalytic Activity

Study on the Preparation of Nano Fe3O4 Powder and its Properties

2012 ◽  
Vol 178-181 ◽  
pp. 562-565
Author(s):  
Rui Cui Liu ◽  
Fu Yi Jiang ◽  
Zi Quan Liu
Keyword(s):  
Catalytic Activity ◽  
Rhodamine B ◽  
Catalytic Degradation ◽  
Model Reaction ◽  
Iron Chloride ◽  
Precipitation Method ◽  
Photo Catalytic Activity ◽  
Powder Samples ◽  
Nano Fe3o4 ◽  
Co Precipitation

The experiment used iron chloride, iron dichloride and other agents as the main resources to prepare the nano Fe3O4 powder by co-precipitation method. Magnets were used to test the magnetism of the prepared nano Fe3O4 powder samples. And the photo-catalytic degradation of rhodamine B solution was used as the model reaction to test the photo-catalytic activity of the prepared nano Fe3O4 powder. The results showed that the prepared nano Fe3O4 powder samples had good magnetism but low photo-catalytic activity.

scholarly journals PHOTOCATALYTIC DEGRADATION OF RHODAMINE B USING Ag NANO DOPED TiO2 PREPARED BY -IRRADIATION METHOD

2016 ◽  
Vol 54 (4) ◽  
pp. 494
Author(s):  
Vo Thi Thu Nhu ◽  
Nguyen Ngoc Duy ◽  
Huynh Nguyen Anh Tuan ◽  
Nguyen Pham Tu Ngan ◽  
Do Quang Minh ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Visible Light ◽  
Rhodamine B ◽  
Bet Surface Area ◽  
Nano Tio2 ◽  
Photo Catalyst ◽  
Photo Catalytic Activity ◽  
Transmission Electron ◽  
Degussa P25 ◽  
Area X

Ag nano deposited on TiO2 (Degussa P25) (Ag nano/TiO2) photo-catalyst has been synthesized by g-irradiation method. The  characteristics  of  Ag nano/TiO2 material  has  been  investigated  by BET surface area, X-ray diffraction (XRD), transmission electron microscopy (TEM) and the diffuse reflectance spectra (DRS). The photo-catalytic properties of Ag nano/TiO2 for degradation of Rhodamine B in aqueous solution under visible light have been studied. Results indicated that Ag nano/TiO2 photo-catalyst exhibited better photo-catalytic activity compared to that of TiO2 under the same reaction condition. The higher activity of Ag nano/TiO2 is due the enhancement of electron–hole separation effect on the surface of the catalyst. At 1.5% Ag doping content, the Ag nano/ TiO2 photo-catalyst exhibited the highest photo-catalytic activity under visible light.

Ag-Co 3 O 4 : Synthesis, characterization and evaluation of its photo-catalytic activity towards degradation of rhodamine B dye in aqueous medium

2018 ◽  
Vol 26 (6) ◽  
pp. 1264-1269 ◽  
Author(s):  
Muhammad Saeed ◽  
Majid Muneer ◽  
Nida Mumtaz ◽  
Mohsin Siddique ◽  
Nadia Akram ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Aqueous Medium ◽  
Rhodamine B ◽  
Photo Catalytic Activity ◽  
Rhodamine B Dye

Boron Doped ZnO Nanostructures for Photo Degradation of Methylene Blue, Methyl Orange and Rhodamine B

2021 ◽  
Vol 21 (4) ◽  
pp. 2483-2494
Author(s):  
Aqeel Ahmed Shah ◽  
Ali Dad Chandio ◽  
Asif Ahmed Sheikh
Keyword(s):  
Methylene Blue ◽  
Catalytic Activity ◽  
Methyl Orange ◽  
Rhodamine B ◽  
Recombination Rate ◽  
Charge Recombination ◽  
Photo Degradation ◽  
Photo Catalytic Activity ◽  
Doped Zno ◽  
Nonmetal Doping

The design of sensitive and efficient photo catalyst for the energy and environmental applications with minimum charge recombination rate and excellent photo conversion efficiency is a challenging task. Herein we have developed a nonmetal doping methodology into ZnO crystal using simple solvothermal approach. The boron (B) is induced into ZnO. The doping of B did not make any significant change on the morphology of ZnO nano rods as confirmed by scanning electron microscopy (SEM) without considerable change on periodic arrangement of nanostructures. The existence of B, Zn, and O is shown by energy dispersive spectroscopy (EDS). The X-ray diffraction (XRD) patterns are well matched to the hexagonal phase for both pristine ZnO and B-doped ZnO. The XRD has shown slight dislocation of 2theta degree. The UV-visible spectroscopy was used to measure the optical bandgap and photo catalytic activity for the degradation of organic dyes. The nonmetal doped ZnO has shown potential and outstanding photo catalytic activity for the photo degradation of methylene blue (MB), methyl orange (MO) and rhodamine B in aqueous solution. The photo degradation efficiency of MB, MO and rhodamine B is found to be 96%, 86% and 80% respectively. The enhanced photo catalytic activity of B-doped ZnO is indexed to the inhibited charge recombination rate due to the reduction in the optical bandgap. Based on the obtained results, it can be said that nonmetal doping is excellent provision for the design of active materials for the extended range of applications.

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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