Synthesis of N-doped graphene-functionalized Zn1.231Ge0.689N1.218O0.782 solid solution as a photocatalyst for CO2 reduction and oxidation of benzyl alcohol under visible-light irradiation

2017 ◽  
Vol 5 (22) ◽  
pp. 10998-11008 ◽  
Author(s):  
Jun Liang ◽  
Li Li
Keyword(s):  
Solid Solution ◽  
Graphene Oxide ◽  
High Temperature ◽  
Visible Light Irradiation ◽  
Co2 Reduction ◽  
Electrostatic Adsorption ◽  
Doped Graphene ◽  
Reduction And Oxidation ◽  
Positively Charged

N-Graphene/ZnGeON hybrids were assembled through electrostatic adsorption of positively-charged Zn2GeO4 nanorods with negatively-charged graphene oxide (GO) and calcinated by a high temperature in situ nitridation technique under NH3 flow.

Photocatalytic CO2 reduction using water as an electron donor by a powdered Z-scheme system consisting of metal sulfide and an RGO–TiO2 composite

2017 ◽  
Vol 198 ◽  
pp. 397-407 ◽  
Author(s):  
Tomoaki Takayama ◽  
Ko Sato ◽  
Takehiro Fujimura ◽  
Yuki Kojima ◽  
Akihide Iwase ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Visible Light ◽  
Water Splitting ◽  
Electron Donor ◽  
Visible Light Irradiation ◽  
Co2 Reduction ◽  
Metal Sulfide ◽  
Electron Donors ◽  
Reduced Graphene

CuGaS2, (AgInS2)x–(ZnS)2−2x, Ag2ZnGeS4, Ni- or Pb-doped ZnS, (ZnS)0.9–(CuCl)0.1, and ZnGa0.5In1.5S4 showed activities for CO2 reduction to form CO and/or HCOOH in an aqueous solution containing K2SO3 and Na2S as electron donors under visible light irradiation. Among them, CuGaS2 and Ni-doped ZnS photocatalysts showed relatively high activities for CO and HCOOH formation, respectively. CuGaS2 was applied in a powdered Z-scheme system combining with reduced graphene oxide (RGO)-incorporated TiO2 as an O2-evolving photocatalyst. The powdered Z-scheme system produced CO from CO2 in addition to H2 and O2 due to water splitting. Oxygen evolution with an almost stoichiometric amount indicates that water was consumed as an electron donor in the Z-schematic CO2 reduction. Thus, we successfully demonstrated CO2 reduction of artificial photosynthesis using a simple Z-scheme system in which two kinds of photocatalyst powders (CuGaS2 and an RGO–TiO2 composite) were only dispersed in water under 1 atm of CO2.

scholarly journals In Situ, Fast, High-Temperature Synthesis of Nickel Nanoparticles in Reduced Graphene Oxide Matrix

2017 ◽  
Vol 7 (11) ◽  
pp. 1601783 ◽  
Author(s):  
Yiju Li ◽  
Yanan Chen ◽  
Anmin Nie ◽  
Aijiang Lu ◽  
Rohit Jiji Jacob ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
High Temperature ◽  
Reduced Graphene Oxide ◽  
Nickel Nanoparticles ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Reduced Graphene ◽  
Oxide Matrix

Novel magnetically separable Fe3O4–WSe2/NG photocatalysts: synthesis and photocatalytic performance under visible-light irradiation

2018 ◽  
Vol 42 (11) ◽  
pp. 8914-8923 ◽  
Author(s):  
Baihong An ◽  
Yanan Liu ◽  
Chengcheng Xu ◽  
Han Wang ◽  
Jun Wan
Keyword(s):  
Graphene Oxide ◽  
Hydrothermal Synthesis ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Light Irradiation ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Magnetically Separable

Visible light responsive Fe3O4–WSe2/NG (nitrogen doped graphene oxide) heterojunction nanocomposites were synthesized by a hydrothermal synthesis route, in which Fe3O4 and WSe2 particles were coated on the surface of NG.

In-situ preparation of TiO2/N-doped graphene hollow sphere photocatalyst with enhanced photocatalytic CO2 reduction performance

2021 ◽  
Vol 42 (10) ◽  
pp. 1648-1658
Author(s):  
Libo Wang ◽  
Bicheng Zhu ◽  
Bei Cheng ◽  
Jianjun Zhang ◽  
Liuyang Zhang ◽  
...  
Keyword(s):  
Hollow Sphere ◽  
Co2 Reduction ◽  
In Situ Preparation ◽  
Doped Graphene

Controllable in situ synthesis of BiOBrxI1−x solid solution on reduced graphene oxide with enhanced visible light photocatalytic performance

RSC Advances ◽  
2015 ◽  
Vol 5 (83) ◽  
pp. 68151-68158 ◽  
Author(s):  
Zhichong Yang ◽  
Fuxing Cheng ◽  
Xiaoping Dong ◽  
Fangming Cui
Keyword(s):  
Solid Solution ◽  
Graphene Oxide ◽  
Charge Separation ◽  
Photocatalytic Performance ◽  
In Situ Synthesis ◽  
Deposition Method ◽  
Reduced Graphene ◽  
Photocatalytic Activities ◽  
Visible Light Photocatalytic

BiOBrxI1−x–rGO solid solution photocatalysts have been developed by an in situ controllable deposition method, which possessed exceptional photocatalytic activities due to their more effective charge separation and transportation.

Nitrogen-doped graphene-supported copper complex: a novel photocatalyst for CO2 reduction under visible light irradiation

RSC Advances ◽  
2015 ◽  
Vol 5 (68) ◽  
pp. 54929-54935 ◽  
Author(s):  
Pawan Kumar ◽  
Harshal P. Mungse ◽  
Om P. Khatri ◽  
Suman L. Jain
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Copper Complex ◽  
Co2 Reduction ◽  
Light Irradiation ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

Nitrogen-doped graphene immobilized with copper(ii) complex (GrN700–CuC) is demonstrated to be an efficient photocatalyst for CO2 reduction into methanol under visible light irradiation.

Ti-Modified Niobium-Silicide Based Directionally Solidified in-situ Composites

1996 ◽  
Vol 460 ◽  
Author(s):  
B. P. Bewlay ◽  
M. R. Jackson ◽  
H. A. Lipsitt
Keyword(s):  
Solid Solution ◽  
Fracture Toughness ◽  
High Temperature ◽  
Cold Crucible ◽  
Directionally Solidified ◽  
In Situ Composites ◽  
Czochralski Crystal Growth ◽  
Three Phase ◽  
Binary Eutectic

ABSTRACTThis paper examines microstructure-property relationships in high-temperature directionally solidified (DS) in-situ composites based on Nb silicides, such as Nb3Si and Nb5Si3. These in-situ composites are based on the Nb3Si-Nb binary eutectic, and are alloyed with Ti. They were prepared using cold crucible Czochralski crystal growth. Ternary Nb-Ti-Si alloys with Ti concentrations from 9 to 45%, and Si concentrations from 10 to 25%, were directionally solidified to generate aligned two- and three-phase composites containing a Nb solid solution with Nb3Si and Nb5Si3 silicides. Fracture toughness values generally greater than 10 MPa√m were measured in these composites. For a given Si concentration, the fracture toughness of the Ti-containing composites was increased ∼ 6 MPa√m over that of the binary alloy composites. The effects of Si concentration, and a range of Nb:Ti ratios, on microstructure, phase equilibria, and fracture toughness were examined.

Pt-doped graphene oxide/MIL-101 nanocomposites exhibiting enhanced hydrogen uptake at ambient temperature

RSC Advances ◽  
2014 ◽  
Vol 4 (55) ◽  
pp. 28908-28913 ◽  
Author(s):  
Jun Zhang ◽  
Xiaoqing Liu ◽  
Hu Zhou ◽  
Xiufen Yan ◽  
Yuanjun Liu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Hydrogen Storage ◽  
Ambient Temperature ◽  
Hydrogen Uptake ◽  
Significant Enhancement ◽  
Thermal Method ◽  
System P ◽  
Doped Graphene ◽  
Organic Framework

Composites of Pt-doped graphene oxide (GO) and a chromate–organic framework (MIL-101) were prepared through the in situ solvent-thermal method. The significant enhancement of hydrogen storage capacities at ambient temperature for the composites with low Pt/GO contents can be attributed to the spillover mechanism in such system.

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