Band edge tuned ZnxCd1−xS solid solution nanopowders for efficient solar photocatalysis

2017 ◽  
Vol 19 (44) ◽  
pp. 29998-30009 ◽  
Author(s):  
Shrabani Ghosh ◽  
Samrat Sarkar ◽  
Bikram Kumar Das ◽  
Dipayan Sen ◽  
Madhupriya Samanta ◽  
...  
Keyword(s):  
Solid Solution ◽  
Catalytic Activity ◽  
Band Edge ◽  
Solar Photocatalysis ◽  
Natural Sunlight ◽  
Zinc Blende

Natural sunlight assisted catalytic activity of hydrothermally synthesized zinc blende ZnxCd1−xS solid solution with theoretical insights.

Sputter Deposition of Fe-Co Nitride for Ferromagnetic Granular Nitride Thin Film

2009 ◽  
Vol 631-632 ◽  
pp. 327-331 ◽  
Author(s):  
K. Sakon ◽  
Y. Hirokawa ◽  
Yasuji Masubuchi ◽  
Shinichi Kikkawa
Keyword(s):  
Thin Film ◽  
Solid Solution ◽  
Thermal Decomposition ◽  
Sputter Deposition ◽  
Composite Target ◽  
Zinc Blende ◽  
Alloy Particles ◽  
Sputter Deposited ◽  
Magneto Resistance ◽  
Zinc Blende Structure

Sputter deposited Fe0.7Co0.3 nitride thin film had zinc blende structure. It was thermally decomposed completely back to the ferromagnetic Fe0.7Co0.3 alloy above 400°C. As-deposited nitride thin films obtained in cosputtering of (Fe0.7Co0.3)1-xAlx composite target with nitrogen sputter gas were solid solutions with zinc blende (x≤0.44) and wurtzite (x>0.5) type structure, respectively. The largest magneto resistance ratio of 0.24% was observed on the Fe0.7Co0.3 alloy particles dispersed in AlN thin film obtained by thermal decomposition of the nitride solid solution with x=0.66 at 500°C.

Single-layer ZnMN2 (M = Si, Ge, Sn) zinc nitrides as promising photocatalysts

2018 ◽  
Vol 20 (21) ◽  
pp. 14619-14626 ◽  
Author(s):  
Yujie Bai ◽  
Gaixia Luo ◽  
Lijuan Meng ◽  
Qinfang Zhang ◽  
Ning Xu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Single Layer ◽  
Band Edge ◽  
Redox Potentials ◽  
Biaxial Strain

The catalytic activity of single-layer ZnGeN2 is better and the band edge positions can be effectively tuned to match better with the redox potentials of water by biaxial strain.

scholarly journals Combustion Synthesis of Non-Precious CuO-CeO2 Nanocrystalline Catalysts with Enhanced Catalytic Activity for Methane Oxidation

Materials ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 878 ◽  
Author(s):  
Abdallah Zedan ◽  
Amina AlJaber
Keyword(s):  
Solid Solution ◽  
Raman Spectroscopy ◽  
Catalytic Activity ◽  
Electronic Properties ◽  
Combustion Synthesis ◽  
Mixed Oxide ◽  
Oxide Catalysts ◽  
Ch4 Oxidation ◽  
X Ray ◽  
Mixed Oxide Catalysts

In this study, xCuO-CeO2 mixed oxide catalysts (Cu weight ratio x = 1.5, 3, 4.5, 6 and 15 wt.%) were prepared using solution combustion synthesis (SCS) and their catalytic activities towards the methane (CH4) oxidation reaction were studied. The combustion synthesis of the pure CeO2 and the CuO-CeO2 solid solution catalysts was performed using copper and/or cerium nitrate salt as an oxidizer and citric acid as a fuel. A variety of standard techniques, including scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), thermo-gravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy were employed to reveal the microstructural, crystal, thermal and electronic properties that may affect the performance of CH4 oxidation. The CuO subphase was detected in the prepared solid solution and confirmed with XRD and Raman spectroscopy, as indicated by the XRD peaks at diffraction angles of 35.3° and 38.5° and the Ag Raman mode at 289 cm−1, which are characteristics of tenorite CuO. A profound influence of Cu content was evident, not only affecting the structural and electronic properties of the catalysts, but also the performance of catalysts in the CH4 oxidation. The presence of Cu in the CeO2 lattice obviously promoted its catalytic activity for CH4 catalytic oxidation. Among the prepared catalysts, the 6% CuO-CeO2 catalyst demonstrated the highest performance, with T50 = 502 °C and T80 = 556 °C, an activity that is associated with the availability of a fine porous structure and the enhanced surface area of this catalyst. The results demonstrate that nanocrystalline copper-ceria mixed oxide catalysts could serve as an inexpensive and active material for CH4 combustion.

Synergistic effect of band edge potentials on BiFeO3/V2O5 composite: Enhanced photo catalytic activity

2019 ◽  
Vol 247 ◽  
pp. 104-114 ◽  
Author(s):  
Venkatesan Jayaraman ◽  
Debabrata Sarkar ◽  
Ranjith Rajendran ◽  
Baskaran Palanivel ◽  
Chinnadurai Ayappan ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Synergistic Effect ◽  
Band Edge ◽  
Photo Catalytic Activity

scholarly journals Preparation of a nanoporous Cu–Ag solid solution with enhanced sono-Fenton-like catalytic activity

RSC Advances ◽  
2019 ◽  
Vol 9 (36) ◽  
pp. 21018-21024 ◽  
Author(s):  
Ning Wang ◽  
Zhangzhong Wang ◽  
Yajie Chu ◽  
Jialin Cheng ◽  
Hao Yu ◽  
...  
Keyword(s):  
Solid Solution ◽  
Catalytic Activity ◽  
Fine Microstructure

NPCS with an extreme fine microstructure displayed superior sono-Fenton-like catalytic activity compared to NPC.

scholarly journals Enhanced catalytic activity of inhomogeneous Rh-based solid-solution alloy nanoparticles

RSC Advances ◽  
2019 ◽  
Vol 9 (66) ◽  
pp. 38882-38890 ◽  
Author(s):  
Md Samiul Islam Sarker ◽  
Takahiro Nakamura ◽  
Satoshi Kameoka ◽  
Yuichiro Hayasaka ◽  
Shu Yin ◽  
...  
Keyword(s):  
Solid Solution ◽  
Catalytic Activity ◽  
Solid Solution Alloy ◽  
Alloy Nanoparticles ◽  
Solution Structures ◽  
Homogeneous Solid Solution

Catalytic Rh-based alloy nanoparticles (NPs) with inhomogeneous solid-solution structures were prepared from homogeneous solid-solution alloy NPs.

In situ formed ultrafine NbTi nanocrystals from a NbTiC solid-solution MXene for hydrogen storage in MgH2

2019 ◽  
Vol 7 (23) ◽  
pp. 14244-14252 ◽  
Author(s):  
Zeyi Wang ◽  
Xuelian Zhang ◽  
Zhuanghe Ren ◽  
Yong Liu ◽  
Jianjiang Hu ◽  
...  
Keyword(s):  
Solid Solution ◽  
Catalytic Activity ◽  
Hydrogen Storage

In situ formed NbTi nanocrystals from a NbTiC solid-solution MXene offer highly stable catalytic activity for hydrogen storage in MgH2.

Study of Structural and Catalytic Properties of Pt/WOх/ZrO₂, Modified by Lanthanum Cations

2020 ◽  
pp. 133-141
Author(s):  
Svetlana A. Naumova ◽  
Anastasia V. Obukhova ◽  
Ludmila I. Kuznetsova
Keyword(s):  
Solid Solution ◽  
Catalytic Activity ◽  
Phase Composition ◽  
Structural Properties ◽  
Catalytic Properties ◽  
Surface Layers ◽  
Tetragonal Modification ◽  
Nanocrystalline Zirconia ◽  
Positive Effect

The effect of the addition of La3+ cations on the structural properties of Pt/WOх/ZrO₂ catalysts and the characteristics of catalytic activity in the process of hydroisomerization of n-heptane and benzene mixture was studied. The phase composition of the catalysts is represented by a solid solution of lanthanum cations in nanocrystalline zirconia of tetragonal modification with localization of lanthanum in the surface layers predominantly. The positive effect of La3+ additives on the selectivity and yield of isomerized products was shown

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