scholarly journals Carbon dot/TiO2 nanocomposites as photocatalysts for metallaphotocatalytic carbon-heteroatom cross-couplings

2021 ◽  
Author(s):  
Zhouxiang Zhao ◽  
Susanne Reischauer ◽  
Bartholomäus Pieber ◽  
Martina Delbianco
Keyword(s):  
Titanium Dioxide ◽  
Water Splitting ◽  
Carbon Dots ◽  
Pollutant Degradation ◽  
Carbon Dot

Carbon dots have been immobilized on titanium dioxide to generate photocatalysts for pollutant degradation and water splitting. Here we demonstrate that these nanocomposites are valuable photocatalysts for metallaphotocatalytic carbon-heteroatom cross-couplings....

Uniform carbon dots@TiO2 nanotube arrays with full spectrum wavelength light activation for efficient dye degradation and overall water splitting

Nanoscale ◽  
2017 ◽  
Vol 9 (41) ◽  
pp. 16046-16058 ◽  
Author(s):  
Qun Wang ◽  
Jianying Huang ◽  
Hongtao Sun ◽  
Ke-Qin Zhang ◽  
Yuekun Lai
Keyword(s):  
Water Splitting ◽  
Carbon Dots ◽  
Dye Degradation ◽  
Nanotube Arrays ◽  
Light Activation ◽  
Full Spectrum ◽  
Nanotube Array ◽  
Carbon Dot ◽  
Overall Water Splitting ◽  
Wavelength Light

A uniform carbon dot-decorated TiO2 nanotube array composite heterojunction with full spectrum wavelength light activation was fabricated via a facile electrochemical strategy for efficient dye degradation and overall water splitting.

Structural features and morphology of titanium dioxide–bismuth vanadate heterojunctions

CrystEngComm ◽  
2021 ◽  
Author(s):  
K. T. Drisya ◽  
M. Edely ◽  
M. Solís-López ◽  
A. Jantrania ◽  
S. Auguste ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Water Treatment ◽  
Water Splitting ◽  
Structural Features ◽  
Heterogeneous Photocatalysis ◽  
Bismuth Vanadate ◽  
Pollutant Degradation ◽  
Semiconducting Oxides

Titanium dioxide TiO2 (TO) and bismuth vanadate BiVO4 (BVO) are promising photoactive semiconducting oxides for heterogeneous photocatalysis devoted to water treatment, pollutant degradation and water splitting processes.

A phenylenediamine-based carbon dot-modified silica stationary phase for hydrophilic interaction chromatography

The Analyst ◽  
2020 ◽  
Vol 145 (3) ◽  
pp. 1056-1061 ◽  
Author(s):  
Yali Yang ◽  
Haijuan Zhang ◽  
Jia Chen ◽  
Zhan Li ◽  
Liang Zhao ◽  
...  
Keyword(s):  
Stationary Phase ◽  
Carbon Dots ◽  
Porous Silica ◽  
Hydrophilic Interaction Chromatography ◽  
Silica Spheres ◽  
Hydrophilic Interaction ◽  
Modified Silica ◽  
Carbon Dot ◽  
New Stationary Phase ◽  
Enhanced Selectivity

Red emitting carbon dots derived from p-phenylenediamine were successfully grafted onto the surface of porous silica spheres which served as a new stationary phase for hydrophilic interaction chromatography with enhanced selectivity.

scholarly journals Synthesis and Optical Characterization of Carbon Dot from Peels of Dragon Fruit and Pear

2018 ◽  
Vol 4 (1) ◽  
pp. 19 ◽  
Author(s):  
Selvy Uftovia Hepriyadi ◽  
. Isnaeni
Keyword(s):  
Carbon Dots ◽  
Optical Characterization ◽  
Heating Time ◽  
Emission Wavelength ◽  
Time Resolved ◽  
Carbon Dot ◽  
Infrared Wavelength ◽  
Dragon Fruit ◽  
Time Changes

Fluorescence materials such as carbon dots are unique and non-toxic materials that can be produced using many methods. In this research, synthesis and optical characterization of carbon dots from the peels of dragon fruit and pear have been done. The synthesis uses bottom-up method using microwave with 20 minutes, 40 minutes, and 80 minutes of heating time. The result of optical characterizations showed that the samples that have been heat treated are carbon dots based of the absorbance in the range of 280-350 nm, and the intensity are decreased in the range of visible and infrared wavelength. There are emission and intensity changes by different heat treatments. From the samples of dragon fruit's peels, the emission wavelength tended to shift toward visible light at the wavelength of 551.51 nm, 507.98 nm and 487.28 nm with the excitation at the wavelength of 420 nm from pulsed pico-laser. While, the emission wavelength from the samples of pears peels were fluctuate in wavelength of 529.09 nm, 507.52 nm and 519.46 nm. Similarly, the time-resolved photoluminescence characterization test showed that there were time changes in each sample of carbon dot. The decay lifetime of carbon dots was fluctuated between 4.5 ns - 5.4 ns for dragon fruit’s peels and about 1.9 ns - 2.4 ns for pear's peels.

scholarly journals Photoelectrochemical water splitting process using titanium dioxide photocatalyst: A brief overview

2021 ◽  
Vol 1 (1) ◽  
pp. 26-35
Author(s):  
Chin Wei Lai ◽  
Jenny Hui Foong Chau
Keyword(s):  
Titanium Dioxide ◽  
Water Splitting ◽  
Energy Supply ◽  
Fossil Fuel ◽  
Lower Cost ◽  
Photoelectrochemical Water Splitting ◽  
Tio2 Photocatalyst ◽  
H2 Generation ◽  
Sustainable Energy Supply ◽  
Splitting Process

Hydrogen (H2) has proved itself as a viable future energy carrier and alternative for fossil fuel in terms of ensuring a clean and sustainable energy supply. However, H2 must be made available at a lower cost so that everyone can benefit from it and prevent causing a worldwide ecological imbalance. The usage of photoelectrochemical water splitting (PEC) technology by using TiO2 photocatalyst can produce H2 using renewable solar energy. The essential milestones, as well as the mechanism in PEC H2 generation, are discussed in this article.

A drastic improvement in photocatalytic H2 production by TiO2 nanosheets grown directly on Ta2O5 substrates

Nanoscale ◽  
2021 ◽  
Author(s):  
Benedict Osuagwu ◽  
Waseen Raza ◽  
Alexander Tesler ◽  
Patrik Schmuki
Keyword(s):  
Titanium Dioxide ◽  
Water Splitting ◽  
H2 Production ◽  
Single Crystalline ◽  
Photocatalytic Water Splitting ◽  
Semiconducting Material ◽  
Tio2 Nanosheets ◽  
Photocatalytic Applications

Titanium dioxide (TiO2) is the most frequently studied semiconducting material for photocatalytic water splitting. One of the favored forms of TiO2 for photocatalytic applications is layers of erected single-crystalline anatase...

Near-Infrared Emitting Dual-Stimuli-Responsive Carbon Dots from Endogenous Bile Pigments

Nanoscale ◽  
2021 ◽  
Author(s):  
Parinaz Fathi ◽  
Parikshit Moitra ◽  
Madeleine M. McDonald ◽  
Mandy Brigitte Esch ◽  
Dipanjan Pan
Keyword(s):  
Surface Modification ◽  
Carbon Dots ◽  
Biomedical Applications ◽  
Near Infrared ◽  
Bile Pigments ◽  
Careful Selection ◽  
Stimuli Responsive ◽  
Carbon Dot ◽  
Surface Modification Techniques ◽  
Selection Of

Carbon dots are biocompatible nanoparticles suitable for a variety of biomedical applications. Careful selection of carbon dot precursors and surface modification techniques has allowed for the development of carbon dots...

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