scholarly journals Synthesis of narrow-band curled carbon nitride nanosheets with high specific surface area for hydrogen evolution from water splitting by low-temperature aqueous copolymerization to form copolymers

RSC Advances ◽  
2020 ◽  
Vol 10 (48) ◽  
pp. 28848-28855 ◽  
Author(s):  
Wenbo Liu ◽  
Zhendong Zhang ◽  
Deguang Zhang ◽  
Runwei Wang ◽  
Zongtao Zhang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Hydrogen Production ◽  
Specific Surface ◽  
Water Splitting ◽  
Carbon Nitride ◽  
Production Efficiency ◽  
Narrow Band ◽  
High Specific Surface Area ◽  
High Hydrogen ◽  
Carbon Nitride Nanosheets

Curled carbon nitride nanosheets with narrow-band gap for ultra-high hydrogen production efficiency.

High Specific Surface Area TiO2 Nanospheres for Hydrogen Production and Photocatalytic Activity

2020 ◽  
Vol 20 (5) ◽  
pp. 3217-3224 ◽  
Author(s):  
Dong Huang ◽  
Haixia Liu ◽  
Junwei Bian ◽  
Tianduo Li ◽  
Baibiao Huang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Production Efficiency ◽  
Carbon Chain ◽  
High Specific Surface Area ◽  
Energy Utilization ◽  
Capping Agent ◽  
Good Crystallinity

TiO2 nanospheres with high specific surface area and good crystallinity were prepared by a hydrothermal method using urea as the capping agent and isopropanol as the solvent. The capping agent effectively controlled the morphology of TiO2 nanospheres and led to improved crystallinity. Using a solvent with a long carbon chain, such as isopropanol, also promoted the formation of TiO2 nanospheres. TiO2 nanospheres with different morphologies were prepared by adjusting the amount of urea. It was found that when TiO2-0.6 was used as the photocatalyst, highest rates of degradation of both methylene blue and rhodamine B under ultraviolet-visible light were observed. Moreover TiO2-0.6 also had the largest hydrogen production efficiency among the different TiO2 samples tested. Thus, TiO2 nanospheres have great development potential and application prospects in environmental management and new modes of energy utilization.

Surface activated carbon nitride nanosheets with optimized electro-optical properties for highly efficient photocatalytic hydrogen production

2016 ◽  
Vol 4 (7) ◽  
pp. 2445-2452 ◽  
Author(s):  
Mohammad Ziaur Rahman ◽  
Jingrun Ran ◽  
Youhong Tang ◽  
Mietek Jaroniec ◽  
Shi Zhang Qiao
Keyword(s):  
Optical Properties ◽  
Activated Carbon ◽  
Hydrogen Production ◽  
Carbon Nitride ◽  
Surface Activation ◽  
Step Method ◽  
Highly Efficient ◽  
Thin Carbon ◽  
Carbon Nitride Nanosheets ◽  
First Time

We introduce a three-step method (co-polymerization, surface activation and exfoliation) for the first time to synthesize sub-nanometer-thin carbon nitride nanosheets as highly efficient hydrogen evolution photocatalysts.

scholarly journals Flower-like boehmite nanopowders obtained at low temperature from Bayer liquor

2020 ◽  
Vol 14 (2) ◽  
pp. 168-172
Author(s):  
Marija Milanovic ◽  
Zoran Obrenovic ◽  
Ivan Stijepovic ◽  
Ljubica Nikolic
Keyword(s):  
Low Temperature ◽  
Specific Surface ◽  
Surface Area ◽  
Industrial Production ◽  
Single Phase ◽  
Low Cost ◽  
High Specific Surface Area ◽  
Nanocrystalline Powders ◽  
Transition Alumina ◽  
Bayer Liquor

Boehmite nanocrystalline powders were obtained by neutralization of Bayer liquor at 70?C with addition of glucose. Temperature of the neutralization induced formation of the flower-like morphology of the nanopowders. XRD and FTIR results confirmed that the single phase boehmite is formed without any other impurities. Calcination at 500?C led to the formation of transition -alumina with the retention of the flower-like morphology. Both as-synthesised and calcined powders possessed high specific surface area with mesopores between 3-6 nm in diameter. Relatively low temperature of neutralization as well as the use of low cost and ecologically friendly glucose as a surfactant are very promising for the possible application in the industrial production of alumina nanopowders.

Photocatalytic activity of ZrO2 composites with graphitic carbon nitride for hydrogen production under visible light

2019 ◽  
Vol 43 (11) ◽  
pp. 4455-4462 ◽  
Author(s):  
Mohammed Ismael ◽  
Ying Wu ◽  
Michael Wark
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Visible Light ◽  
Water Splitting ◽  
Carbon Nitride ◽  
Graphitic Carbon Nitride ◽  
Superior Performance ◽  
Electron Hole ◽  
Effective Electron ◽  
Composite Interface

The synthesized ZrO2/g-C3N4 composites exhibit superior performance in water splitting for hydrogen production due to the effective electron–hole separation at the composite interface.

A low-temperature electro-thermochemical water-splitting cycle for hydrogen production based on LiFeO2/Fe redox pair

2020 ◽  
Vol 45 (41) ◽  
pp. 20800-20807 ◽  
Author(s):  
Baochen Cui ◽  
Jianing Zhang ◽  
Shuzhi Liu ◽  
Xianjun Liu ◽  
Zhihua Zhang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Hydrogen Production ◽  
Water Splitting ◽  
Redox Pair

Understanding the roles of plasmonic Au nanocrystal size, shape, aspect ratio and loading amount in Au/g-C3N4 hybrid nanostructures for photocatalytic hydrogen generation

2018 ◽  
Vol 20 (34) ◽  
pp. 22296-22307 ◽  
Author(s):  
Yanzhen Guo ◽  
Henglei Jia ◽  
Jianhua Yang ◽  
Hang Yin ◽  
Zhi Yang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Aspect Ratio ◽  
Carbon Nitride ◽  
Hydrogen Generation ◽  
Hybrid Nanostructures ◽  
Nanocrystal Size ◽  
Gold Nanocrystals ◽  
Photocatalytic Hydrogen Generation ◽  
Loading Amount ◽  
Carbon Nitride Nanosheets

Hybrid photocatalysts made of pre-grown gold nanocrystals and graphitic carbon nitride nanosheets are synthesized, studied and optimized for boosting photocatalytic hydrogen production.

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