scholarly journals Optimization of Rhodamine B Decolorization by Adsorption and Photoelectrodegradation Combination System

2018 ◽  
Vol 14 (2) ◽  
pp. 276
Author(s):  
Sayekti Wahyuningsih ◽  
Velina Anjani ◽  
Hanik Munawaroh ◽  
Candra Purnawan
Keyword(s):  
Rhodamine B ◽  
Sol Gel ◽  
Ionic Structure ◽  
Acid Condition ◽  
Adsorption Activity ◽  
Gel Method ◽  
Combination System ◽  
Titanium Tetra Isopropoxide ◽  
Acid And Base ◽  
Rhodamine B Dye

<p>A combination of adsorption and photoelectrodegradation system was performed to reduce the concentration of Rhodamine B dye in water.<strong> </strong>The adsorption was conducted using silica and alumina activated by acid and base under various predetermined pH of Rhodamine B. The photoelectrodegradation process was performed using Ti/TiO<sub>2</sub> electrode as a cathode and Ti/TiO<sub>2</sub>-NiO as an anode. TiO<sub>2</sub> was synthesized from titanium tetra-isopropoxide precursor (TTiP) by sol-gel method. TiO<sub>2</sub>-NiO composite was synthesized with the same precursor with the addition of Ni(NO<sub>3</sub>)<sub>2</sub>.6H<sub>2</sub>O. The result shows that the activation changes the amount of OH total in the adsorbent. The acid-activated adsorbent showed an optimum adsorption activity when Rhodamine B was in base condition caused by zwitter ionic structure. It reversely occured to base-activated adsorbent where an optimum absorption activity reached at acid condition. The application of base-activated silica in adsorption and photoelectrodegradation combination system decreased the concentration of Rhodamine B dye up to 98.79% using photoanode Ti/TiO<sub>2</sub>-NiO under pH 2 at bias potential 6 V.</p>

Photocatalytic Activity of Ag+-Doped TiO2 Thin Films Prepared by Sol-Gel Method

2011 ◽  
Vol 335-336 ◽  
pp. 1067-1070 ◽  
Author(s):  
Shu Kai Zheng
Keyword(s):  
Thin Films ◽  
Photocatalytic Activity ◽  
Rhodamine B ◽  
Sol Gel ◽  
Atomic Ratio ◽  
Gel Method ◽  
Sol Gel Method ◽  
Annealing Temperatures ◽  
Glass Slides ◽  
Rhodamine B Dye

TiO2and Ag+-doped TiO2thin films were successfully obtained on microscope glass slides by means of sol-gel method. Then the photocatalytic activity of the TiO2and Ag+-doped TiO2thin films was evaluated by the degradation of rhodamine B dye solution. The effects of both annealing temperatures and Ag+contents on the photocatalytic activity of TiO2thin films were examined. The results indicated that the TiO2thin films with an atomic ratio of Ti:Ag=10:1 annealed at 300°C had a higher photocatalytic activity.

Easy and Fast Synthesis of Pd-MWCNT/TiO2by the Sol-Gel Method and its Recyclic Photodegradation of Rhodamine B

2013 ◽  
Vol 50 (4) ◽  
pp. 251-256 ◽  
Author(s):  
Shu Ye ◽  
Kefayat Ullah ◽  
Lei Zhu ◽  
Ze-Da Meng ◽  
Qian Sun ◽  
...  
Keyword(s):  
Rhodamine B ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Fast Synthesis

Preparation of TiO2/Fe3O4 composite by sol-gel method and its photocatalytic activity for removal of Rhodamine B from water

2020 ◽  
Vol 562 (1) ◽  
pp. 66-72
Author(s):  
Peisong Tang ◽  
Yangbin Ding ◽  
Haifeng Chen ◽  
Yongya Wang
Keyword(s):  
Photocatalytic Activity ◽  
Rhodamine B ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method

Photophysical Properties and Photochemical Stability of Rhodamine B Encapsulated in SiO2 and Si-Ti Binary Oxide Matrixes by the Sol-Gel Method

Langmuir ◽  
1994 ◽  
Vol 10 (6) ◽  
pp. 1772-1776 ◽  
Author(s):  
Nobuaki Negishi ◽  
Mutsuko Fujino ◽  
Hiromi Yamashita ◽  
Marye Anne Fox ◽  
Masakazu Anpo
Keyword(s):  
Rhodamine B ◽  
Photophysical Properties ◽  
Sol Gel ◽  
Binary Oxide ◽  
Gel Method ◽  
Sol Gel Method ◽  
Photochemical Stability

Photocatalytic Activities of Fe3+-Doped TiO2 Thin Films Prepared by Sol-Gel Method

2011 ◽  
Vol 233-235 ◽  
pp. 1655-1658
Author(s):  
Shu Kai Zheng
Keyword(s):  
Thin Films ◽  
Photocatalytic Activity ◽  
Sol Gel ◽  
Atomic Ratio ◽  
Gel Method ◽  
Sol Gel Method ◽  
Annealing Temperatures ◽  
Glass Slides ◽  
Photocatalytic Activities ◽  
Rhodamine B Dye

TiO2 and different contents Fe3+-doped TiO2 thin films were successfully obtained on microscope glass slides by Sol-Gel method. Then the photocatalytic activities of the samples were evaluated by the degradation of Rhodamine B dye solution. The effects of both annealing temperatures and Fe3+ contents on the photocatalytic activities of TiO2 thin films were examined. The results indicated that the sample with an atomic ratio of Ti:Fe=7:3 annealed at 500°C had a higher photocatalytic activity.

scholarly journals Preparation of TiO2/Black Talc Composite Photocatalyst and the Research on Its Adsorption-Degradation Coupling Effects

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6038
Author(s):  
Huan Shuai ◽  
Yuxin Wang ◽  
Jiao Wang ◽  
Gaoxiang Du ◽  
Daimei Chen ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Tio2 Nanoparticles ◽  
Rhodamine B ◽  
Degradation Rate ◽  
Sol Gel ◽  
Coupling Effects ◽  
Illumination Time ◽  
Composite Photocatalyst ◽  
Gel Method

In this paper, a TiO2/black talc composite photocatalyst was prepared by the sol-gel method using TBOT as titanium source and black talc as carrier. Rhodamine B was used as the targeted pollutant to study the adsorption role of carbon in black talc. The results showed that with the adsorption-degradation cycles, the illumination time can be reduced by 40%. The adsorption rate and degradation rate of the composite photocatalyst was also increased. The degradation rate of Rhodamine B reached more than 95%, which fully shows the synergistic effect between TiO2 nanoparticles and black talc. In this way, the adsorption-degradation coupling of the photocatalyst could be realized.

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