Research on the Solvothermal Synthesis and Photocatalytic Properties of Nano-Size ZnO

2013 ◽  
Vol 295-298 ◽  
pp. 503-506
Author(s):  
Da Jiang ◽  
Hong Liang Zhang ◽  
Ji Jie Wang
Keyword(s):  
Photocatalytic Degradation ◽  
Rhodamine B ◽  
Solvothermal Synthesis ◽  
Degradation Rate ◽  
Crystallization Mechanism ◽  
Photocatalytic Properties ◽  
Dimensional Structure ◽  
One Dimensional ◽  
Nano Size

Nano-size ZnO of one dimensional structure was prepared by solvothermal synthesis through dissolution-crystallization mechanism and characterized by TEM and XRD. Moreover, photocatalytic degradation rate of dye Rhodamine B (RhB) at the present of nano-size ZnO were carried out, and the results indicated that the nano-size ZnO prepared by such a method has excellent photocatalytic properties.

Selective fluorescent sensing and photocatalytic properties of three MOFs based on naphthalene-1,4-dicarboxylic acid and 2,4,5-tri(4-pyridyl)-imidazole

2018 ◽  
Vol 42 (5) ◽  
pp. 3551-3559 ◽  
Author(s):  
Jun-Jie Wang ◽  
Ren-Chun Zhang ◽  
Ya-Li Cao ◽  
Yan-Ang Li ◽  
Yi-Ran Wang ◽  
...  
Keyword(s):  
Dicarboxylic Acid ◽  
Photocatalytic Degradation ◽  
Rhodamine B ◽  
High Sensitivity ◽  
Photocatalytic Properties ◽  
Luminescent Probes ◽  
Fluorescent Sensing ◽  
Degradation Activity

Three MOFs display high sensitivity in the detection of NB and Ca2+ or Co2+ ions as luminescent probes. Moreover, 3 exhibits a relatively good photocatalytic degradation activity of rhodamine B.

Structure and Photocatalytic Properties of Fixed Porous TiO2 Composite Film on Steel Prepared by Plasma Electrolytic Oxidation

2012 ◽  
Vol 217-219 ◽  
pp. 1073-1076
Author(s):  
Yun Long Wang ◽  
Miao Wang ◽  
Mao Sun Xu ◽  
Yue Mei Qin
Keyword(s):  
Composite Film ◽  
Photocatalytic Degradation ◽  
Ultraviolet Light ◽  
Rhodamine B ◽  
Plasma Electrolytic Oxidation ◽  
Film Surface ◽  
Photocatalytic Properties ◽  
Ceramic Film ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic

TiO2 composite photocatalytic film was fixed on steel by by plasma electrolytic oxidation. The microstructure of the composite film were investigated by XRD, EDS and SEM. The photocatalytic properties of the film were studied by testing the photocatalytic degradation of Rhodamine B. The results showed that the ceramic film was composed of A-TiO2 and R-TiO2. The EDS revealed that the film consisted Ti, O, Si and Fe elements. The SEM pictures showed that the film surface was rough and porous. The photocatalytic experiment results showed that the the TiO2 composite film fixed on steel by plasma electrolytic oxidation exhibited relatively high photocatalytic photodegradation of Rhodamine B, whose removal ratio reached 90% in 2 hours, irradiation of ultraviolet light.

Preparation of Bi1-xLaxVO4 and its Photocatalytic Degradation on Rhodamine B

2016 ◽  
Vol 852 ◽  
pp. 1473-1476
Author(s):  
Yan Ding ◽  
Liang Fang Fu ◽  
Yu Huan Wang ◽  
Liang Chao Li ◽  
Juan Bi Li
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Rhodamine B ◽  
Degradation Rate ◽  
Light Sensitivity ◽  
Structure Morphology ◽  
Photocatalytic Activities ◽  
Testing Techniques ◽  
Composition Structure

A series of photocatalyst Bi1-xLaxVO4 (0.1, 0.3, 0.5, 0.7) powders were prepared by hydrothermal method. The composition, structure, morphology and photocatalytic activity of the samples were researched by means of modern testing techniques. Bi1-xLaxVO4 showed excellent visible-light sensitivity and photocatalytic activities. The degradation rate of sample with x = 0.5 on rhodamine B reached 90 %, which was much higher than that of pure BiVO4.

scholarly journals Effects of Sintering Temperature on Crystallinity, Morphology, and Photocatalytic Activity of Bi2O3

2019 ◽  
Vol 7 (12) ◽  
Author(s):  
Mukholit, Heri Sutanto ◽  
Ngurah Ayu Ketut Umiati ◽  
Eko Hidayanto
Keyword(s):  
Photocatalytic Activity ◽  
Crystallite Size ◽  
Rhodamine B ◽  
Degradation Rate ◽  
Sintering Temperature ◽  
Photocatalytic Properties ◽  
Precipitation Method ◽  
Temperature Variations ◽  
Photocatalytic Activities ◽  
Degradation Tests

Bi2O3 has successfully been synthesized using precipitation method with sintering temperature variations of 400oC, 450o C, 500o C, 550o C, and 600o C. Crystallinity property of resulting Bi2O3 powder has also been tested with XRD and morphology properties were tested with SEM. Meanwhile, photocatalytic properties were tested by using it to degrade Rhodamine B under sunlight. Results of XRD tests show that differences in sintering temperature affect crystallite size. Increases in sintering temperature between 400o C and 500o C result in greater crystallite size, whereas sintering temperature between 550o C and 600oC result in smaller crystallite size. Results of SEM tests show that resulting Bi2O3 has rod-like structure, While results of degradation tests show that increases in sintering temperature enhances photocatalytic activities of Bi2O3, as evident with Bi2O3 undergoing sintering at 600oC was able to degrade Rhodamine B with 56.74% effectiveness and degradation rate of 0.007 ppm/min.

The Simulation of Photocatalysis Degradation of Formaldehyde Using Nano-TiO2 Based on the Diffusion Model

2013 ◽  
Vol 327 ◽  
pp. 8-12
Author(s):  
Bin Li ◽  
Kai Xiao Zhang ◽  
Chao Yu Feng ◽  
Xing Bin Zheng ◽  
Kun Xie ◽  
...  
Keyword(s):  
Experimental Data ◽  
Photocatalytic Degradation ◽  
Diffusion Model ◽  
Degradation Rate ◽  
Nano Tio2 ◽  
Fick's Law ◽  
One Dimensional ◽  
Photocatalytic Mechanism ◽  
Dimensional Diffusion ◽  
The One

In this paper, the one-dimensional diffusion model about nano-TiO2 photocatalytic degradation of formaldehyde process was established ,through analyzing nano-TiO2 photocatalytic mechanism, and verifying the accuracy of the model by the experimental data combined with Fick's law. According to this model, it concluded that the degradation rate of the formaldehyde is related to the height of purification apparatus, and when the height is smaller, the degradation rate is greater. Within the same cleaning time (t = 200min), when the height is 0.15m, the rate of degradation of formaldehyde is 99%; when the height is 0.3m, the rate of degradation of formaldehyde is 88%; while the height is 0.7m , the rate is only 32%.

Visible Light Induced Photocatalytic Degradation of Rhodamine B on One-Dimensional Iron Oxide Particles

2010 ◽  
Vol 114 (40) ◽  
pp. 17051-17061 ◽  
Author(s):  
Xuemei Zhou ◽  
Hongchao Yang ◽  
Chenxuan Wang ◽  
Xiaobo Mao ◽  
Yinshu Wang ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Rhodamine B ◽  
Iron Oxide Particles ◽  
One Dimensional ◽  
Oxide Particles

scholarly journals Preparation and performance of Cu2O/TiO2 nanocomposite thin film and photocatalytic degradation of Rhodamine B

2018 ◽  
Vol 78 (4) ◽  
pp. 913-924 ◽  
Author(s):  
Xiaojiao Yu ◽  
Song Kou ◽  
Junkun Nie ◽  
Jian Zhang ◽  
Yuchen Wei ◽  
...  
Keyword(s):  
Thin Film ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Rhodamine B ◽  
Degradation Rate ◽  
Annealing Treatment ◽  
Nanocomposite Thin Film ◽  
Absorbing Boundary ◽  
X Ray ◽  
Cu2o Thin Film

Abstract A constant current electrodeposition approach was employed to prepare Cu2O/TiO2 nanocomposite thin film. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), Raman, ultraviolet visible light spectrophotometer (UV-Vis), and photoluminescence (PL) measurements were used to characterize and analyze the thin film microstructure, surface morphology, and photoelectric properties. The effect of annealing treatment on the thin film properties is discussed. The response surface methodology (RSM) was employed to optimize the Rhodamine B (RhB) photocatalytic degradation by thin films, and the quadratic multinomial mathematical model was established. The photocatalytic degradation process of RhB was also studied. The results indicate that the prepared Cu2O thin film was of high purity, with a (111) crystal plane preferred orientation. The average particle diameter was approximately 100–200 nm, and the absorbing boundary was approximately 600 nm. After annealing treatment, the absorbing boundary and open-circuit voltage increased, and Cu2O thin film exhibited an obvious absorbance response in the visible-light range. The established model has better fitness and higher reliability, and the R2 value of established quadratic model is 0.9818. The optimal degradation conditions were obtained by RSM. Under optimum conditions, the RhB degradation rate could reach 98.4% in 3 h and the total organic carbon (TOC) removal rate was 48.2%. Recycling results reveal that RhB degradation rate can still reach 94.5% after eight cycles.

scholarly journals Solvothermal synthesis of nanoscale disc-like gadolinium doped magnesium zirconate for highly efficient photocatalytic degradation of rhodamine B in water

2020 ◽  
Vol 2 (5) ◽  
Author(s):  
S. Akshatha ◽  
S. Sreenivasa ◽  
L. Parashuram ◽  
V. Udaya Kumar ◽  
Tadimety Madhu Chakrapani Rao ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Rhodamine B ◽  
Solvothermal Synthesis ◽  
Highly Efficient

The Effect of Different Ions on Photodegradation Rhodamine B in TiO2 Suspension Liquid

2013 ◽  
Vol 807-809 ◽  
pp. 2739-2742
Author(s):  
Peng Wei Huo ◽  
Mao Bin Wei ◽  
Xin Lin Liu ◽  
Dan Dan Wang ◽  
Zi Yang Lu ◽  
...  
Keyword(s):  
Waste Water ◽  
Photocatalytic Degradation ◽  
Rhodamine B ◽  
Degradation Rate ◽  
Ph Value ◽  
Degradation Process ◽  
Photocatalytic Process ◽  
Negative Effect ◽  
Anions And Cations

The photocatalytic degradation process of waste water was usually influenced by many factors, such as different ions, addition reagent and pH value. In order to investigate the effect of ions strength in the photocatalytic process, the anions and cations were systematically investigated with P25 TiO2 photocatalyst with Rhodamine B (RB) as waste water in this work. The results showed that the cations of low valence showed minimum negative effect on degradation rate and the most anions showed enhance the degradation rate of RB. The ions strength showed random in the photocatalytic process.

Solvothermal Synthesis and Photocatalysis of SnO2 Nanocrystal Microspheres

2011 ◽  
Vol 412 ◽  
pp. 40-43 ◽  
Author(s):  
Hui Liu ◽  
Xiao Nan Dong ◽  
Guang Jun Li ◽  
Xiao Feng Wang ◽  
Zhen Feng Zhu
Keyword(s):  
Photocatalytic Activity ◽  
Ethylene Glycol ◽  
Rhodamine B ◽  
Solvothermal Synthesis ◽  
Degradation Rate ◽  
Photocatalytic Property ◽  
Poly Ethylene Glycol ◽  
Ft Ir ◽  
Poly Ethylene ◽  
High Degradation Rate

Quasi-monodispersed SnO2nanocrystal microspheres were successfully fabricated by a solvothermal route with the assistance of poly (ethylene glycol) (PEG, Mn=6000) template. The as-prepared SnO2microspheres were well characterized by XRD, SEM, TEM, and FT-IR. The photocatalytic activity for Rh B on the SnO2microspheres was also investigated under UV irradiation. The experimental results show that the quasi-monodispersed SnO2microspheres with diameter about 1.3µm are self-assembled by large quantity of crystallites less than 10 nm. The SnO2microspheres have a good photocatalytic property, as evidenced by the result that over 95% of the Rh B decomposed over the SnO2nanocrystal microspheres within 180 min. The high degradation rate of rhodamine B (Rh B) on the as-synthesized SnO2nanocrystal microspheres can be attributed to the small size of crystals.

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