The role of citric acid modifiers addition in the preparation of TiO2 nanoparticles with the solvothermal method

2020 ◽  
Author(s):  
W. M. Yusmaman ◽  
J. Gunlazuardi
Keyword(s):  
Citric Acid ◽  
Tio2 Nanoparticles ◽  
Solvothermal Method

scholarly journals Phytoextraction of Lead Using a Hedge Plant [Alternanthera bettzickiana (Regel) G. Nicholson]: Physiological and Biochemical Alterations through Bioresource Management

2021 ◽  
Vol 13 (9) ◽  
pp. 5074
Author(s):  
Urooj Kanwal ◽  
Muhammad Ibrahim ◽  
Farhat Abbas ◽  
Muhammad Yamin ◽  
Fariha Jabeen ◽  
...  
Keyword(s):  
Citric Acid ◽  
Growth Parameters ◽  
Cost Effective ◽  
Dry Weight ◽  
Citric Acid Concentration ◽  
Biochemical Alterations ◽  
Biomass Plant ◽  
Environmentally Friendly Approach ◽  
Pb Concentration

Phytoremediation is a cost-effective and environmentally friendly approach that can be used for the remediation of metals in polluted soil. This study used a hedge plant–calico (Alternanthera bettzickiana (Regel) G. Nicholson) to determine the role of citric acid in lead (Pb) phytoremediation by exposing it to different concentrations of Pb (0, 200, 500, and 1000 mg kg−1) as well as in a combination with citric acid concentration (0, 250, 500 µM). The analysis of variance was applied on results for significant effects of the independent variables on the dependent variables using SPSS (ver10). According to the results, maximum Pb concentration was measured in the upper parts of the plant. An increase in dry weight biomass, plant growth parameters, and photosynthetic contents was observed with the increase of Pb application (200 mg kg−1) in soil while a reduced growth was experienced at higher Pb concentration (1000 mg kg−1). The antioxidant enzymatic activities like superoxide dismutase (SOD) and peroxidase (POD) were enhanced under lower Pb concentration (200, 500 mg kg−1), whereas the reduction occurred at greater metal concentration Pb (1000 mg kg−1). There was a usual reduction in electrolyte leakage (EL) at lower Pb concentration (200, 500 mg kg−1), whereas EL increased at maximum Pb concentration (1000 mg kg−1). We concluded that this hedge plant, A. Bettzickiana, has the greater ability to remediate polluted soils aided with citric acid application.

scholarly journals Flammable gases produced by TiO2 nanoparticles under magnetic stirring in water

Friction ◽  
2021 ◽  
Author(s):  
Pengcheng Li ◽  
Chongyang Tang ◽  
Xiangheng Xiao ◽  
Yanmin Jia ◽  
Wanping Chen
Keyword(s):  
Tio2 Nanoparticles ◽  
Quartz Glass ◽  
Dye Degradation ◽  
Mechanical Energy ◽  
Chemical Energy ◽  
Magnetic Stirring ◽  
Catalytic Role ◽  
Nanostructured Semiconductors

AbstractThe friction between nanomaterials and Teflon magnetic stirring rods has recently drawn much attention for its role in dye degradation by magnetic stirring in dark. Presently the friction between TiO2 nanoparticles and magnetic stirring rods in water has been deliberately enhanced and explored. As much as 1.00 g TiO2 nanoparticles were dispersed in 50 mL water in 100 mL quartz glass reactor, which got gas-closed with about 50 mL air and a Teflon magnetic stirring rod in it. The suspension in the reactor was magnetically stirred in dark. Flammable gases of 22.00 ppm CO, 2.45 ppm CH4, and 0.75 ppm H2 were surprisingly observed after 50 h of magnetic stirring. For reference, only 1.78 ppm CO, 2.17 ppm CH4, and 0.33 ppm H2 were obtained after the same time of magnetic stirring without TiO2 nanoparticles. Four magnetic stirring rods were simultaneously employed to further enhance the stirring, and as much as 30.04 ppm CO, 2.61 ppm CH4, and 8.98 ppm H2 were produced after 50 h of magnetic stirring. A mechanism for the catalytic role of TiO2 nanoparticles in producing the flammable gases is established, in which mechanical energy is absorbed through friction by TiO2 nanoparticles and converted into chemical energy for the reduction of CO2 and H2O. This finding clearly demonstrates a great potential for nanostructured semiconductors to utilize mechanical energy through friction for the production of flammable gases.

Dual Role of Citric Acid as a Binding Inhibitor of Anionic Surfactant with Bivalent Cations and Co-Surfactant on Bio-Surfactant EOR

2018 ◽  
Author(s):  
Nao Miyazaki ◽  
Yuichi Sugai ◽  
Kyuro Sasaki ◽  
Yoshifumi Okamoto ◽  
Chencan Ouyang
Keyword(s):  
Citric Acid ◽  
Anionic Surfactant ◽  
Dual Role ◽  
Bivalent Cations

Insights about urinary hippuric and citric acid as biomarkers of fruit and vegetable intake in patients with kidney stones: The role of age and sex

Nutrition ◽  
2019 ◽  
Vol 59 ◽  
pp. 83-89 ◽  
Author(s):  
Angela Guerra ◽  
Andrea Ticinesi ◽  
Franca Allegri ◽  
Antonio Nouvenne ◽  
Beatrice Prati ◽  
...  
Keyword(s):  
Citric Acid ◽  
Kidney Stones ◽  
Vegetable Intake ◽  
Fruit And Vegetable Intake ◽  
Fruit And Vegetable ◽  
Age And Sex

scholarly journals Study on printing wastewater treatment by decomposition reaction H2O2 catalyzed of complex between ion Ni2+ and citric acid

2020 ◽  
Vol 9 (4) ◽  
pp. 106-110
Author(s):  
Tue Nguyen Ngoc ◽  
Nghia Nguyen Trong ◽  
Thuong Nghiem Thi ◽  
Quang Tran Thuong ◽  
Trung Nguyen Duc
Keyword(s):  
Wastewater Treatment ◽  
Citric Acid ◽  
Industrial Wastewater ◽  
Room Temperature ◽  
Organic Pollutant ◽  
Decomposition Reaction ◽  
Efficient Treatment ◽  
Catalytic Role ◽  
Printing Processes

In this article, the results of the research on organic pollutant treatment in the wastewater of printing processes on fabric by H2O2 under the catalytic role of the complex between ion Ni2+ and Citric acid (H4L) were presented. The condition of pH, H4L/Ni2+, H2O2, Ni2+ concentration has been explored to get the optimal conditions for improving COD efficient treatment. The results provide the solutions of the homogeneous complex  catalysts in the industrial wastewater treatment at room temperature and atmosphere. 

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