Simple Synthesis and Activities of Visible-Light Activities BiVO4 Doped Al via Solid State Method

2016 ◽  
Vol 703 ◽  
pp. 311-315 ◽  
Author(s):  
Hai Feng Chen ◽  
Jia Mei Chen ◽  
Hui Zhao
Keyword(s):  
Photocatalytic Activity ◽  
Solid State ◽  
Visible Light ◽  
Catalytic Effect ◽  
Raw Materials ◽  
Doping Amount ◽  
Solid State Method ◽  
Illumination Time ◽  
Grinding Method ◽  
State Method

Using the Bi (NO3)3•5H2O and NH4VO3 as raw materials, Al(NO3)3•9H2O provides Al3+ doping, BiVO4 photocatalysts with different Al3+ doping amount were successfully prepared by a low-temperature solid state grinding method. And it was characterized by XRD. The Methyl Orange (MO) was simulated as the degradation material under the visible light, which was used to study the influence of the amount of photocatalyst and the illumination time. The results showed that the catalytic effect of Al/BiVO4 photocatalysts was enhanced by comparing with pure BiVO4, but enhanced a little. And the possible causes of enhanced photocatalytic activity via doping have been discussed.

Facile Solid State Method Route Synthesis and Enhance Visible Light Activities of BiVO4 by Doping Co

2016 ◽  
Vol 703 ◽  
pp. 316-320
Author(s):  
Hai Feng Chen ◽  
Jing Ling Hu ◽  
Bing Xu
Keyword(s):  
Solid State ◽  
Visible Light ◽  
Catalytic Effect ◽  
Catalytic Properties ◽  
Raw Materials ◽  
X Ray Diffraction ◽  
Solid State Method ◽  
Illumination Time ◽  
X Ray ◽  
State Method

Using NH4VO3, Bi (NO3)3•5H2O and Co (NO3)2•6H2O as raw materials, Co doped BiVO4 (Co/BiVO4) photocatalysts were successfully prepared by solid state method. And the photo catalytic properties were test in this work. Crystal structures of these samples were characterized by X-ray diffraction (XRD). The Methyl Orange (MO) was simulated as the sewage under the visible light to explorer the influence of the illumination time and the mass of photocatalyst. The visible-light absorption spectrum of BiVO4 was broadening with doping Co. It was found that the Co/BiVO4 had higher photocatalytic activity than pure BiVO4 .The reason of enhanced catalytic effect also had been analyzed and discussed in the article.

Preparation and Photocatalytic Activity of Cu/BiVO4 by Solid State Grinding Method for Degradation of Methyl Orange

2016 ◽  
Vol 703 ◽  
pp. 321-325
Author(s):  
Hai Feng Chen ◽  
Jia Mei Chen ◽  
Zhi Xue Pan
Keyword(s):  
Methyl Orange ◽  
Solid State ◽  
Visible Light ◽  
Raw Materials ◽  
X Ray Diffraction ◽  
Visible Absorption ◽  
Illumination Time ◽  
Grinding Method ◽  
Ft Ir ◽  
Degradation Of Methyl Orange

In this work, novel Cu/BiVO4 photocatalyst were prepared by a low-temperature solid state grinding method using Bi (NO3)3•5H2O, NH4VO3 and Cu (NO3)2•2H2O as raw materials. The structure and properties of the samples were characterized by Infrared Spectroscopy (FT-IR), X-ray diffraction (XRD) and UV-vis diffused reflectance spectroscopy (DRS); Using the degradation of methyl orange (MO) as the probe, it was simulated as the degradation of sewage under the visible light to study the influence of the illumination time and the amount of photocatalysts. Compared with the pure BiVO4, the visible-light absorption scope of BiVO4 was broadened by doping Cu, the UV-Visible absorption edges were slightly red shift and the band gap was narrower. Comparatively speaking, the results indicted that the doped Cu enhanced the photocatalytic activities of BiVO4.

Preparation of Nanosized Ni2+-Doped ErFeO3 by Microwave Assisted Process and its Visible-Light Photocatalytic Activity

2017 ◽  
Vol 748 ◽  
pp. 418-422 ◽  
Author(s):  
Li Fang ◽  
Qian Yang ◽  
Meng Ying Xu ◽  
Jun Wei Cao ◽  
Pei Song Tang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Visible Light ◽  
Diffuse Reflectance Spectroscopy ◽  
Raw Materials ◽  
Doping Amount ◽  
Illumination Time ◽  
Visible Light Photocatalyst ◽  
Microwave Assisted ◽  
Average Grain Size

Using Er (NO3)3·6H2O, Fe (NO3)3·9H2O, Ni (NO3)3·6H2O as main raw materials, the nanosized Ni2+-doped ErFeO3 was prepared by microwave assisted method. The Ni2+-doped ErFeO3 samples were characterized by thermogravimetry and differential thermal analysis (TG-DTA), powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-visible diffuse reflectance spectroscopy (DRS). The different doping amount was studied for photocatalytic properties of samples. The results show that the Ni2+-doped ErFeO3 is perovskite structure (ABO3), and its average grain size is nearly 80nm. Under the visible-light, using the methyl-orange as simulate sewages, the Ni2+-doped ErFeO3 has higher photocatalytic activity than pure ErFeO3 powder, and the doping amount of 0.02 to ErFeO3 is the best. When the illumination time of the visible light is 120 min, the degradation rate of the best ratio of the samples can rise to nearly 100% for the decomposition of methyl orange. Therefore, the nanosized Ni2+-doped ErFeO3 is an excellent visible-light photocatalyst.

Electrochemical properties of high-voltage LiNi0.5Mn1.5O4 synthesized by a solid-state method

RSC Advances ◽  
2014 ◽  
Vol 4 (50) ◽  
pp. 26022-26029 ◽  
Author(s):  
Yan-Zhuo Lv ◽  
Yan-Zhang Jin ◽  
Yuan Xue ◽  
Jin Wu ◽  
Xiao-Gang Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Electrochemical Properties ◽  
High Voltage ◽  
Raw Materials ◽  
Cycling Stability ◽  
Solid State Method ◽  
State Method ◽  
Bulk Scale

The high-voltage LiNi0.5Mn1.5O4 synthesized at 850 °C for 12 h and sintered at 600 °C for 6 h exhibits excellently cycling stability from industrial raw materials in bulk scale (>0.5 kg).

scholarly journals Enhanced Cycling Stability of LiCuxMn1.95−xSi0.05O4 Cathode Material Obtained by Solid-State Method

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1302 ◽  
Author(s):  
Hongyuan Zhao ◽  
Fang Li ◽  
Xiuzhi Bai ◽  
Tingting Wu ◽  
Zhankui Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Copper Ions ◽  
Cycling Performance ◽  
Cycling Stability ◽  
Doping Amount ◽  
Solid State Method ◽  
Electrochemical Tests ◽  
Improvement Effect ◽  
State Method ◽  
Co Doped

The LiCuxMn1.95−xSi0.05O4 (x = 0, 0.02, 0.05, 0.08) samples have been obtained by a simple solid-state method. XRD and SEM characterization results indicate that the Cu-Si co-doped spinels retain the inherent structure of LiMn2O4 and possess uniform particle size distribution. Electrochemical tests show that the optimal Cu-doping amount produces an obvious improvement effect on the cycling stability of LiMn1.95Si0.05O4. When cycled at 0.5 C, the optimal LiCu0.05Mn1.90Si0.05O4 sample exhibits an initial capacity of 127.3 mAh g−1 with excellent retention of 95.7% after 200 cycles. Moreover, when the cycling rate climbs to 10 C, the LiCu0.05Mn1.90Si0.05O4 sample exhibits 82.3 mAh g−1 with satisfactory cycling performance. In particular, when cycled at 55 °C, this co-doped sample can show an outstanding retention of 94.0% after 100 cycles, whiles the LiMn1.95Si0.05O4 only exhibits low retention of 79.1%. Such impressive performance shows that the addition of copper ions in the Si-doped spinel effectively remedy the shortcomings of the single Si-doping strategy and the Cu-Si co-doped spinel can show excellent cycling stability.

scholarly journals One pot synthesis of NiMo–Al2O3 catalysts by solvent-free solid-state method for hydrodesulfurization

RSC Advances ◽  
2017 ◽  
Vol 7 (86) ◽  
pp. 54468-54474 ◽  
Author(s):  
Xiaodong Yi ◽  
Dongyun Guo ◽  
Pengyun Li ◽  
Xinyi Lian ◽  
Yingrui Xu ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Solid State ◽  
Raw Materials ◽  
Solvent Free ◽  
One Pot ◽  
Solid State Method ◽  
One Pot Synthesis ◽  
Hds Catalysts ◽  
State Method

A simple and solvent-free solid-state method was used to prepare NiMo–Al2O3 hydrodesulfurization (HDS) catalysts using Ni(NO3)2·6H2O, (NH4)6Mo7O24·4H2O, and AlCl3·6H2O as the solid raw materials and polyethylene glycol (PEG) as an additive.

Preparation of Novel N-TiO2 by a Solid-State Method and Its Photocatalytic Activity

2014 ◽  
Vol 32 (8) ◽  
pp. 1430-1435 ◽  
Author(s):  
Pengju MA ◽  
Guotian YAN ◽  
Junjie QIAN ◽  
Min ZHANG ◽  
Jianjun YANG
Keyword(s):  
Photocatalytic Activity ◽  
Solid State ◽  
Solid State Method ◽  
State Method
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