Citrate/F− assisted phase control synthesis of TiO2 nanostructures and their photocatalytic properties

RSC Advances ◽  
2015 ◽  
Vol 5 (91) ◽  
pp. 74230-74237 ◽  
Author(s):  
Zhiqiang Guo ◽  
Chao Li ◽  
Shuanglong Lu ◽  
Yue Pan ◽  
Hongwei Gu
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Synthesis ◽  
Synthesis Method ◽  
Phase Control ◽  
Photocatalytic Properties ◽  
Control Synthesis ◽  
Tio2 Nanostructures

A novel and controlled sol-hydrothermal synthesis method of nano-TiO2 assisted by citrate/F− has been developed. The photocatalytic activity of the synthesized TiO2 was superior to the commercially available TiO2.

Synthesis of Surfactant-Assisted C/Fe–FeVO4 Nanostructure: Characterization and Photocatalytic Degradation of Ciprofloxacin

2020 ◽  
Vol 20 (9) ◽  
pp. 5636-5641
Author(s):  
Shi-Jie Chen ◽  
Guang-Shan Zhang ◽  
Ying-Jie Li ◽  
Jin-Long Li ◽  
Ren-Jiang Lv ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Synthesis ◽  
Catalytic Properties ◽  
Synthesis Method ◽  
Analytical Techniques ◽  
The Novel ◽  
Composite Photocatalyst ◽  
Porosity Structure ◽  
Simulated Solar Light ◽  
Surfactant Assisted

The novel C/Fe–FeVO4 composite photocatalyst were synthesized by using a two-step hydrothermal synthesis method. Through a detailed exploration on the chemical and phisical properties by some spectroscopic and analytical techniques, the as-prepared C/Fe–FeVO4 exhibted a nanosheet and meso porosity structure. Accordingly, we further utilized this C/Fe–FeVO4 composite as a photocatalist for degradating the notorious ciprofloxacin (CIP) under simulated solar light (SSL) irradiation. Due to its outstanding catalytic properties, the C/Fe–FeVO4 exhibited superior photocatalytic activity. The possible photocatalytic mechanism has been discussed.

scholarly journals Hydrothermal synthesis of novel 1-aminoperylene diimide/TiO2/MoS2 composite with enhanced photocatalytic activity

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Yongshan Ma ◽  
Yue Wang ◽  
Tianyi Jiang ◽  
Fengxia Zhang ◽  
Xuemei Li ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Synthesis ◽  
Synthesis Method ◽  
Band Gap Energy ◽  
Ordered Structure ◽  
Radical Scavengers ◽  
Photogenerated Electrons ◽  
Component Systems ◽  
Valence Bands ◽  
Active Substances

Abstract1-aminoperylene diimide/TiO2/MoS2 composite (NH2-PDI/TiO2/MoS2) with ordered structure was prepared by hydrothermal synthesis method. The composite was characterized by XRD, SEM, FTIR, XPS, BET, DRS, PL, EIS, Raman, photocurrent, and Mott-Schottky plots spectroscopy. The potential positions of the conduction and valence bands, and the band gap energy of the semiconductors were estimated. The composite exhibited higher photocatalytic activity compared with the mono-component systems. The apparent rate constants (k) were determined as 0.00616, 0.00352, 0.00738, 0.00517, 0.00752, and 0.00806 min−1 for TiO2, NH2-PDI, NH2-PDI/TiO2, MoS2, MoS2/TiO2, and NH2-PDI/TiO2/MoS2, respectively. The detection of radical scavengers confirmed that superoxide radicals, photogenerated holes, and photogenerated electrons were the main active substances for MB degradation. Between type II- heterojunction mechanism and Z-scheme mechanism, the latter could explain the enhanced photocatalytic activity of the composite better. The Z-scheme mechanism accumulates more electrons at CB level of NH2-PDI and hence generates more super oxide radicals.

Synthesis of Zn-doped In2O3nano sphere architectures as a triethylamine gas sensor and photocatalytic properties

RSC Advances ◽  
2016 ◽  
Vol 6 (92) ◽  
pp. 89847-89854 ◽  
Author(s):  
Xin Sun ◽  
Xiaojing Liu ◽  
Xiaolong Deng ◽  
Xijin Xu
Keyword(s):  
Hydrothermal Synthesis ◽  
Gas Sensor ◽  
Synthesis Method ◽  
Photocatalytic Properties ◽  
One Step

Zn-doped In2O3nano spheres (ZIO NSs) were synthesized by calcining the precipitates prepared through a facile one-step hydrothermal synthesis method.

Phase control of manganese sulfides during hydrothermal synthesis and their photocatalytic activity for H2 generation

2021 ◽  
pp. 130174
Author(s):  
Sovann Khan ◽  
Wenwei Lei ◽  
Kai Takagi ◽  
Akihiro Uchida ◽  
Norihiro Suzuki ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Synthesis ◽  
Phase Control ◽  
H2 Generation

Facile phase control for hydrothermal synthesis of anatase-rutile TiO2 with enhanced photocatalytic activity

2015 ◽  
Vol 646 ◽  
pp. 380-386 ◽  
Author(s):  
Hong Li ◽  
Xiaojun Shen ◽  
Yongdi Liu ◽  
Lingzhi Wang ◽  
Juying Lei ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Synthesis ◽  
Phase Control ◽  
Rutile Tio2

scholarly journals Hydrothermal Synthesis of FeOOH and Fe2O3 Modified Self-Organizing Immobilized TiO2 Nanotubes for Photocatalytic Degradation of 1H-Benzotriazole

Catalysts ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1371
Author(s):  
Tihana Čižmar ◽  
Vedran Kojić ◽  
Marko Rukavina ◽  
Lidija Brkljačić ◽  
Krešimir Salamon ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Synthesis ◽  
Tio2 Nanotubes ◽  
Synthesis Method ◽  
Electrochemical Anodization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Vis Spectroscopy ◽  
Flow Through ◽  
The Given

In this study, titanium dioxide nanotubes were prepared by electrochemical anodization technique and modified with an aqueous solution of FeCl3 using hydrothermal synthesis method to control the amount and distribution of iron compounds on the anatase TiO2 nanotubes. The objective was to synthesize immobilized FeOOH@TiO2 or Fe2O3@TiO2 photocatalysts designed for the flow-through reactor systems; to investigate thermal treatment effect on the photocatalytic efficiency; to determine appropriate Fe-compounds concentration for the maximum photocatalytic activity improvement, and to explain the mechanism responsible for the enhancement. The photocatalysts were tested for the degradation of 1H-benzotriazole in water under UV/solar light irradiation. Up to two times increase in the photocatalytic activity was obtained when TiO2 nanotubes were modified with 0.8 mM Fe. At higher Fe concentrations (8 mM and 80 mM), the photocatalytic activity of the given photocatalysts decreased. To confirm the formation of FeOOH or Fe2O3 species, and to clarify the mechanism of photoactivity, X-ray diffraction (XRD), Raman spectroscopy (RS), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray spectroscopy (EDS) and UV-Vis spectroscopy were used.

scholarly journals Hydrothermal Synthesis, Characterization, and Visible Light-Driven Photocatalytic Properties of Bi2WO6Nanoplates

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Anukorn Phuruangrat ◽  
Phattranit Dumrongrojthanath ◽  
Nuengruethai Ekthammathat ◽  
Somchai Thongtem ◽  
Titipun Thongtem
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Synthesis ◽  
Reaction Temperature ◽  
Rhodamine B ◽  
Organic Dye ◽  
Photocatalytic Properties ◽  
Absorption Bands ◽  
Xrd Pattern ◽  
Sem And Tem ◽  
Visible Light Driven

In this research, the effects on reaction temperature and length of time on Bi2WO6nanoplates by hydrothermal synthesis on morphologies and photocatalytic properties were studied. The products obtained at different reaction temperature and reaction time were characterized by XRD, Raman, FTIR, SEM, and TEM techniques. The photocatalytic properties of the samples were measured by decomposing the rhodamine-B organic dye. XRD pattern was specified as pure orthorhombic well-crystallized Bi2WO6phase for the 180°C and 20 h synthesis. Its FTIR spectrum shows main absorption bands at 400–1000 cm−1, assigned to Bi–O stretching, W–O stretching, and W–O–W bridging stretching modes. SEM and TEM analyses show that the product was composed of nanoplates. Photocatalytic activity of Bi2WO6nanoplates shows the 98.24% degradation of rhodamine-B under the Xe light irradiation within 100 min.

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