Ultrasonic degradation of Rhodamine B in aqueous solution: Influence of operational parameters

2008 ◽  
Vol 152 (1) ◽  
pp. 381-386 ◽  
Author(s):  
M.A. Behnajady ◽  
N. Modirshahla ◽  
S. Bavili Tabrizi ◽  
S. Molanee
Keyword(s):  
Aqueous Solution ◽  
Rhodamine B ◽  
Operational Parameters ◽  
Ultrasonic Degradation

UV/H2O2 treatment of Rhodamine B in aqueous solution: Influence of operational parameters and kinetic modeling

Desalination ◽  
2008 ◽  
Vol 230 (1-3) ◽  
pp. 16-26 ◽  
Author(s):  
N. Daneshvar ◽  
M.A. Behnajady ◽  
M. Khayyat Ali Mohammadi ◽  
M.S. Seyed Dorraji
Keyword(s):  
Aqueous Solution ◽  
Kinetic Modeling ◽  
Rhodamine B ◽  
Operational Parameters ◽  
H2o2 Treatment

Ultrasonic Degradation of Dextran in Aqueous Solution

2011 ◽  
Vol 396-398 ◽  
pp. 1624-1627 ◽  
Author(s):  
Qing Song Zou ◽  
Yuan Yuan Pu ◽  
Su Xia Li ◽  
Qing Wang ◽  
Xiao Wang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Molecular Weight ◽  
Ultrasonic Treatment ◽  
Degradation Rate ◽  
Ultrasonic Power ◽  
Operational Parameters ◽  
Ultrasonic Device ◽  
Initial Stage ◽  
Ultrasonic Degradation

An ultrasonic device with frequency of 20 kHz was used to investigate the effect of different operational parameters such as ultrasonic power, temperature and initial molecular weight on dextran degradation. Results show that the molecular weight of dextran can be controlled by ultrasonic treatment. Higher the ultrasonic power and lower the temperature could increase the degradation rate (R).The initial molecular weight plays an important role in at the initial stage of dextran degradation (within 20 minutes). A smilar limiting molecular weight (Mw≈8.7×104) was obtained after 2 hours ultrasonic treatment for four different initial molecular weight dextrans, suggesting that the limiting molecular weight is independent on the initial molecular weight of dextran. Ultrasonic treatment can be used as a safe, simple and effective method to control the molecular weight of dextran.

scholarly journals Self-Assembled Nanomaterials Based on Complementary Sn(IV) and Zn(II)-Porphyrins, and Their Photocatalytic Degradation for Rhodamine B Dye

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3598
Author(s):  
Nirmal K. Shee ◽  
Hee-Joon Kim
Keyword(s):  
Aqueous Solution ◽  
Visible Light Irradiation ◽  
Rhodamine B ◽  
Self Assembly ◽  
The Self ◽  
Assembly Process ◽  
Absorption Bands ◽  
Ligand Coordination ◽  
Rhodamine B Dye ◽  
Metal Ligand

A series of porphyrin triads (1–6), based on the reaction of trans-dihydroxo-[5,15-bis(3-pyridyl)-10,20-bis(phenyl)porphyrinato]tin(IV) (SnP) with six different phenoxy Zn(II)-porphyrins (ZnLn), was synthesized. The cooperative metal–ligand coordination of 3-pyridyl nitrogens in the SnP with the phenoxy Zn(II)-porphyrins, followed by the self-assembly process, leads to the formation of nanostructures. The red-shifts and remarkable broadening of the absorption bands in the UV–vis spectra for the triads in CHCl3 indicate that nanoaggregates may be produced in the self-assembly process of these triads. The emission intensities of the triads were also significantly reduced due to the aggregation. Microscopic analyses of the nanostructures of the triads reveal differences due to the different substituents on the axial Zn(II)-porphyrin moieties. All these nanomaterials exhibited efficient photocatalytic performances in the degradation of rhodamine B (RhB) dye under visible light irradiation, and the degradation efficiencies of RhB in aqueous solution were observed to be 72~95% within 4 h. In addition, the efficiency of the catalyst was not impaired, showing excellent recyclability even after being applied for the degradation of RhB in up to five cycles.

Application of TiO2 and Nb2O5 for ultrasonic degradation of Rhodamine-B

2021 ◽  
Author(s):  
Niraj S. Topare ◽  
Dinesh S. Bhutada ◽  
Praful G. Bansod
Keyword(s):  
Rhodamine B ◽  
Ultrasonic Degradation

scholarly journals Adsorptive removal of Rhodamine B dye from aqueous solution by using graphene–based nickel nanocomposite

Heliyon ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. e06851
Author(s):  
Usha Jinendra ◽  
Dinesh Bilehal ◽  
B.M. Nagabhushana ◽  
Avvaru Praveen Kumar
Keyword(s):  
Aqueous Solution ◽  
Rhodamine B ◽  
Adsorptive Removal ◽  
Rhodamine B Dye

Electrolytic removal of Rhodamine B from aqueous solution by peroxicoagulation process

2014 ◽  
Vol 21 (14) ◽  
pp. 8585-8594 ◽  
Author(s):  
Puthiya Veetil Nidheesh ◽  
Rajan Gandhimathi
Keyword(s):  
Aqueous Solution ◽  
Rhodamine B

SiO2@Ag/AgCl: a low-cost and highly efficient plasmonic photocatalyst for degrading rhodamine B under visible light irradiation

RSC Advances ◽  
2014 ◽  
Vol 4 (110) ◽  
pp. 64747-64755 ◽  
Author(s):  
Xuefeng Xu ◽  
Man Wang ◽  
Yanyan Pei ◽  
Changchun Ai ◽  
Liangjie Yuan
Keyword(s):  
Aqueous Solution ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Rhodamine B ◽  
Photocatalytic Performance ◽  
Low Cost ◽  
Light Irradiation ◽  
Nano Structure ◽  
Plasmonic Photocatalyst ◽  
Highly Efficient

The micro/nano-structure composite SiO2@Ag/AgCl was employed as a low cost photocatalyst for the degradation of RhB in aqueous solution under visible light irradiation, which exhibited excellent photocatalytic performance and stability.

Colorimetric and Fluorescent Probe for Hypochlorite with High Selectivity

2013 ◽  
Vol 295-298 ◽  
pp. 475-478 ◽  
Author(s):  
Zhi Xiang Han ◽  
Ming Hui Du ◽  
Guo Xi Liang ◽  
Xiang Yang Wu
Keyword(s):  
Reactive Oxygen Species ◽  
Aqueous Solution ◽  
Detection Limit ◽  
Fluorescent Probe ◽  
Rhodamine B ◽  
High Selectivity ◽  
Reactive Oxygen ◽  
Living Cells ◽  
Oxygen Species ◽  
Turn On

Rhodamine B thiohydrazide (RBS) was firstly employed as turn-on fluorescent probe for hypochlorite in aqueous solution and living cells. It exhibits a stable response to hypochlorite from 1.0×10-6to 1.0×10-5M with a detection limit of 3.3×10-7M. The response of this probe to hypochlorite is fast and highly selective compared with other reactive oxygen species (such as.OH,1O2, H2O2) and other common anions (such as X-, ClO2-, ClO4-, NO3-, NO2-, OH-, Ac-, CO32-, SO42-).

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