A novel quaternary solid solution photo-absorber material for photoelectrochemical hydrogen generation

2015 ◽  
Vol 51 (71) ◽  
pp. 13678-13681 ◽  
Author(s):  
Tiantian Hong ◽  
Zhifeng Liu ◽  
Weiguo Yan ◽  
Bo Wang ◽  
Xueqi Zhang ◽  
...  
Keyword(s):  
Solid Solution ◽  
Hydrogen Generation ◽  
Photocurrent Density ◽  
Quaternary Solid Solution ◽  
Absorber Material ◽  
First Time

We report a novel quaternary solid solution (Ag–Cu–Sb–S or ACSS) serving as a photo-absorber material in the photoelectrochemical field for the first time, and ZnO/ACSS nanoarrays exhibited a photocurrent density of 4.45 mA cm−2.

Highly efficient colloidal MnxCd1−xS nanorod solid solution for photocatalytic hydrogen generation

2018 ◽  
Vol 6 (46) ◽  
pp. 23683-23689 ◽  
Author(s):  
Ling Li ◽  
Guoning Liu ◽  
Shaopeng Qi ◽  
Xindi Liu ◽  
Liuyu Gu ◽  
...  
Keyword(s):  
Solid Solution ◽  
Hydrogen Generation ◽  
Highly Efficient ◽  
Photocatalytic Hydrogen Generation ◽  
Hot Injection ◽  
First Time

Colloidal MnxCd1−xS nanorods as highly efficient H2 generation photocatalysts were prepared by hot-injection synthesis for the first time.

Electron microprobe study of turquoise-group solid solutions in the Neyshabour and Meydook mines, northeast and southern Iran

2020 ◽  
Vol 58 (1) ◽  
pp. 71-83
Author(s):  
Elahe Mansouri Gandomani ◽  
Nematollah Rashidnejad-Omran ◽  
Amir Emamjomeh ◽  
Pietro Vignola ◽  
Tahereh Hashemzadeh
Keyword(s):  
Solid Solution ◽  
Solid Solutions ◽  
Electron Microprobe ◽  
Electron Probe Microanalysis ◽  
Electron Probe ◽  
Major Elements ◽  
Point Of View ◽  
Chemical Compositions ◽  
Light Blue ◽  
Quaternary Solid Solution

ABSTRACT Turquoise, CuAl6(PO4)4(OH)8·4H2O, belongs to the turquoise group, which consists of turquoise, chalcosiderite, aheylite, faustite, planerite, and UM1981-32-PO:FeH. In order to study turquoise-group solid solutions in samples from the Neyshabour and Meydook mines, 17 samples were selected and investigated using electron probe microanalysis. In addition, their major elements were compared in order to evaluate the feasibility of distinguishing the provenance of Persian turquoises. The electron microprobe data show that the studied samples are not constituted of pure turquoise (or any other pure endmember) and belong, from the chemical point of view, to turquoise-group solid solutions. In a turquoise–planerite–chalcosiderite–unknown mineral quaternary solid solution diagram, the chemical compositions of the analyzed samples lie along the turquoise–planerite line with minor involvement of chalcosiderite and the unknown mineral. Among light blue samples with varying hues and saturations from both studied areas, planerite is more abundant among samples from Meydook compared with samples from Neyshabour. Nevertheless, not all the light blue samples are planerite. This study demonstrates that distinguishing the deposit of origin for isochromatic blue and green turquoises, based on electron probe microanalysis method and constitutive major elements, is not possible.

Efficient hydrogen generation from formic acid using AgPd nanoparticles immobilized on carbon nitride-functionalized SBA-15

RSC Advances ◽  
2016 ◽  
Vol 6 (52) ◽  
pp. 46908-46914 ◽  
Author(s):  
Lixin Xu ◽  
Bo Jin ◽  
Jian Zhang ◽  
Dang-guo Cheng ◽  
Fengqiu Chen ◽  
...  
Keyword(s):  
Formic Acid ◽  
Carbon Nitride ◽  
Reduction Method ◽  
Hydrogen Generation ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Co Reduction ◽  
First Time

Bimetallic AgPd nanoparticles were successfully immobilized on graphitic carbon nitride (g-C3N4) functionalized SBA-15 for the first time by a facile co-reduction method.

Synthesis and Structure of Titania Nanotubes For Hydrogen Generation

2013 ◽  
Vol 741 ◽  
pp. 84-89 ◽  
Author(s):  
Sangworn Wantawee ◽  
Pacharee Krongkitsiri ◽  
Tippawan Saipin ◽  
Buagun Samran ◽  
Udom Tipparach
Keyword(s):  
Oxalic Acid ◽  
Hydrogen Generation ◽  
Ammonium Fluoride ◽  
Photocurrent Density ◽  
Sodium Sulphate ◽  
Titania Nanotubes ◽  
X Ray Diffraction ◽  
X Ray ◽  
Dc Power ◽  
Anodic Voltage

Titania nanotubes (TiO2NTs) working electrodes for hydrogen production by photoelectrocatalytic water splitting were synthesized by means of anodization method. The electrolytes were the mixtures of oxalic acid (H2C2O4), ammonium fluoride (NH4F), and sodium sulphate (VI) (Na2SO4) with different pHs. A constant dc power supply at 20 V was used as anodic voltage. The samples were annealed at 450 °C for 2 hrs. Scanning Electron Microscopy (SEM) and X-ray diffraction (XRD) were used to characterized TiO2NTs microstructure. TiO2NTs with diameter of 100 nm were obtained when pH 3 electrolyte consisting of 0.08 M oxalic acid, 0.5 wt% NH4F, and 1.0 wt% Na2SO4was used. Without external applied potential, the maximum photocurrent density was 2.8 mA/cm2under illumination of 100 mW/cm2. Hydrogen was generated at an overall photoconversion efficiency of 3.4 %.

Immobilizing AgPd alloy on Vulcan XC-72 carbon: a novel catalyst for highly efficient hydrogen generation from formaldehyde aqueous solution

RSC Advances ◽  
2016 ◽  
Vol 6 (107) ◽  
pp. 105638-105643 ◽  
Author(s):  
Shutao Gao ◽  
Tao Feng ◽  
Qiuhua Wu ◽  
Cheng Feng ◽  
Ningzhao Shang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Room Temperature ◽  
Hydrogen Generation ◽  
Bimetallic Catalyst ◽  
Highly Efficient ◽  
Novel Catalyst ◽  
First Time

A novel bimetallic catalyst, AgPd nanoalloy supported on Vulcan XC-72 carbon (AgPd@C-72), has been successfully fabricated and used for catalyzing H2 generation from formaldehyde aqueous solution at room temperature for the first time.

PVP Stabilized Ruthenium (0) Nanorods as Effective Catalysts in Hydrogen Generation from the Hydrolysis of Sodium Borohydride

2011 ◽  
Vol 197-198 ◽  
pp. 1577-1581 ◽  
Author(s):  
Shu Ge Peng ◽  
Jun Na Liu ◽  
Xiao Fei Liu ◽  
Yu Qing Zhang ◽  
Jun Zhang
Keyword(s):  
Activation Energy ◽  
Microwave Heating ◽  
Absorption Spectra ◽  
Catalytic Property ◽  
Sodium Borohydride ◽  
Boiling Point ◽  
Hydrogen Generation ◽  
First Time ◽  
Hydrolysis Of

Poly (N-vinyl-2-pyrrolidone) (PVP) - stabilized ruthenium (0) nanorods have been successfully synthesized by refluxing ruthenium (Ⅲ) chloride (RuCl3) in low boiling point alcohols (including ethanol, n-propanol, and n-butanol) using microwave heating for the first time. The effects of low boiling point alcohols on the preparation and catalytic property of ruthenium nanorods were discussed. UV-Vis absorption spectra indicated ruthenium nanorods could be synthesized in n-butanol after 2 h refluxing, far below the refluxing time in ethanol and n-propanol. The activation energy of the hydrolysis of NaBH4 catalyzed by Ruthenium (0) nanorods obtained in ethanol, n-propanol, and n-butanol were determined to be 41.1, 33.3, and 27.9 kJ / mol, respectively.

Twins in Cd1−xZnxS solid solution: Highly efficient photocatalyst for hydrogen generation from water

2011 ◽  
Vol 4 (4) ◽  
pp. 1372 ◽  
Author(s):  
Maochang Liu ◽  
Lianzhou Wang ◽  
Gaoqing (Max) Lu ◽  
Xiangdong Yao ◽  
Liejin Guo
Keyword(s):  
Solid Solution ◽  
Hydrogen Generation ◽  
Highly Efficient

scholarly journals The effect of manganese oxidation state on antiferromagnetic order in SrMn1−xSbxO3 (0 < x < 0.5) perovskite solid solutions

2019 ◽  
Vol 7 (7) ◽  
pp. 2085-2095
Author(s):  
Gennady V. Bazuev ◽  
Alexander P. Tyutyunnik ◽  
Alexander V. Korolev ◽  
Emmanuelle Suard ◽  
Cheuk-Wai Tai ◽  
...  
Keyword(s):  
Solid Solution ◽  
Oxidation State ◽  
Solid Solutions ◽  
Mixed Valence ◽  
Antiferromagnetic Order ◽  
Manganese Oxidation ◽  
Magnetic Structures ◽  
First Time

Two ranges of mixed-valence manganese (Mn3+/Mn4+) SrMn1−xSbxO3 solid solution and corresponding magnetic structures were described for the first time.

scholarly journals Результаты экспериментов по кристаллизации твердого раствора Ge-Si-Sb на космическом комплексе "Союз--Аполлон" в условиях микрогравитации

2019 ◽  
Vol 61 (4) ◽  
pp. 664
Author(s):  
И.Л. Шульпина ◽  
И.А. Прохоров
Keyword(s):  
Solid Solution ◽  
Rapid Development ◽  
Physical Nature ◽  
Great Contribution ◽  
Technological Environment ◽  
Direction Transverse ◽  
Transfer Processes ◽  
Mass Transfer Processes ◽  
Depth Study ◽  
First Time

AbstractObjective factors that allow the experiment on growing crystals of a Ge–Si–Sb solid solution on the Soyuz–Apollo spacecraft to take a special place among many experiments on growing single crystals aboard spacecrafts are analyzed. In the study of crystals grown on board a spacecraft, anomalous and unexpectedly high segregation of the solid solution components in the direction transverse to the direction of crystallization is found. An analysis of the obtained results allowed us, for the first time, to establish a causal relationship between anomalous segregation and microgravity features on board a spacecraft. Determining the physical nature of anomalous segregation have affected the direction of further research and give rise to an in-depth study of specific features of the new technological environment, the rapid development of numerical methods for studying heat and mass transfer processes in melts, and the expanding of the range of studied crystals and methods for studying them. A great contribution to the development of this area was made by Professor V.S. Zemskov.

scholarly journals Sb distribution in the phases of SiO2 saturated Sb-Fe-O-SiO2-CaO system in air

2020 ◽  
pp. 30-30
Author(s):  
Z.T. Zhang ◽  
H.P. Nie ◽  
K. Yan
Keyword(s):  
Solid Solution ◽  
Mass Fraction ◽  
Solution Phase ◽  
Smelting Process ◽  
Solid Solution Phase ◽  
Antimony Content ◽  
X Ray ◽  
Yield Rate ◽  
Temperature Experiment ◽  
First Time

Sb distribution in the phases of SiO2 saturated Sb-Fe-O-SiO2-CaO system has been determined for the first time through high-temperature experiment and quenching techniques, followed by Electron probe X-ray microanalysis(EPMA) in air(Ptot= 1 atm, PO2= 0.21 atm). The phases were quantified in the temperature range of 900?C-1200?C and the effects of Fe/SiO2(mass fraction) and CaO/SiO2(mass fraction) on Sb2O3 content in the Sb-Fe-O-SiO2-CaO system were investigated at 1200?C. The results indicate that the Sb-containing phase primarily existed in the solid solution phase at 1200?C. With the increase of temperature from 1100?C to 1200?C, the Sb2O3 content in the solid solution phase increased drastically from 7.52 wt% to 17.36 wt%. Lowering the values of CaO/SiO2 and Fe/SiO2 in the smelting process effectively reduced Sb2O3 content in the slag. The verification experiment results suggest that the antimony content in slag was 0.57 wt%, the crude antimony yield rate was lower than 4%,and the crude antimony grade was beyond 94 wt%, which can achieve the reduction of antimony content in the slag.

Sign in / Sign up

Export Citation Format

Share Document