Effect of Nature and Location of Defects on Bandgap Narrowing in Black TiO2 Nanoparticles

2012 ◽  
Vol 134 (18) ◽  
pp. 7600-7603 ◽  
Author(s):  
Alberto Naldoni ◽  
Mattia Allieta ◽  
Saveria Santangelo ◽  
Marcello Marelli ◽  
Filippo Fabbri ◽  
...  
Keyword(s):  
Tio2 Nanoparticles ◽  
Bandgap Narrowing ◽  
Black Tio2

808 nm light triggered black TiO2 nanoparticles for killing of bladder cancer cells

2017 ◽  
Vol 81 ◽  
pp. 252-260 ◽  
Author(s):  
Wenjun Ni ◽  
Meng Li ◽  
Jiayi Cui ◽  
Zipeng Xing ◽  
Zhenzi Li ◽  
...  
Keyword(s):  
Bladder Cancer ◽  
Cancer Cells ◽  
Tio2 Nanoparticles ◽  
Bladder Cancer Cells ◽  
Black Tio2

scholarly journals Synthesis and Characterization of Manganese-Modified Black TiO2 Nanoparticles and Their Performance Evaluation for the Photodegradation of Phenolic Compounds from Wastewater

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7422
Author(s):  
Muhammad Irfan ◽  
Rab Nawaz ◽  
Javed Akbar Khan ◽  
Habib Ullah ◽  
Tahir Haneef ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Visible Light ◽  
Tio2 Nanoparticles ◽  
Total Phenolic ◽  
Defect States ◽  
Recombination Suppression ◽  
Tio2 Nps ◽  
Mn Doping ◽  
Photodegradation Efficiency ◽  
Black Tio2

The release of phenolic-contaminated treated palm oil mill effluent (TPOME) poses a severe threat to human and environmental health. In this work, manganese-modified black TiO2 (Mn-B-TiO2) was produced for the photodegradation of high concentrations of total phenolic compounds from TPOME. A modified glycerol-assisted technique was used to synthesize visible-light-sensitive black TiO2 nanoparticles (NPs), which were then calcined at 300 °C for 60 min for conversion to anatase crystalline phase. The black TiO2 was further modified with manganese by utilizing a wet impregnation technique. Visible light absorption, charge carrier separation, and electron–hole pair recombination suppression were all improved when the band structure of TiO2 was tuned by producing Ti3+ defect states. As a result of the enhanced optical and electrical characteristics of black TiO2 NPs, phenolic compounds were removed from TPOME at a rate of 48.17%, which is 2.6 times higher than P25 (18%). When Mn was added to black TiO2 NPs, the Ti ion in the TiO2 lattice was replaced by Mn, causing a large redshift of the optical absorption edges and enhanced photodegradation of phenolic compounds from TPOME. The photodegradation efficiency of phenolic compounds by Mn-B-TiO2 improved to 60.12% from 48.17% at 0.3 wt% Mn doping concentration. The removal efficiency of phenolic compounds from TPOME diminished when Mn doping exceeded the optimum threshold (0.3 wt%). According to the findings, Mn-modified black TiO2 NPs are the most effective, as they combine the advantages of both black TiO2 and Mn doping.

Quantum-confined bandgap narrowing of TiO2 nanoparticles by graphene quantum dots for visible-light-driven applications

2016 ◽  
Vol 52 (59) ◽  
pp. 9208-9211 ◽  
Author(s):  
Shujun Wang ◽  
Ivan S. Cole ◽  
Qin Li
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
Tio2 Nanoparticles ◽  
Graphene Quantum Dots ◽  
Visible Light Range ◽  
Bandgap Narrowing ◽  
Uv Absorbers ◽  
Visible Light Driven ◽  
Quantum Confined ◽  
First Time

We for the first time report a quantum-confined bandgap narrowing mechanism through which the absorption of two UV absorbers, namely the graphene quantum dots (GQDs) and TiO2 nanoparticles, can be easily extended into the visible light range in a controllable manner.

Solution Plasma-Synthesized Black TiO2 Nanoparticles for Solar–Thermal Water Evaporation

2021 ◽  
Vol 4 (4) ◽  
pp. 3940-3948
Author(s):  
Shilei Zhu ◽  
Zhehan Yu ◽  
Lihua Zhang ◽  
Seiichi Watanabe
Keyword(s):  
Tio2 Nanoparticles ◽  
Thermal Water ◽  
Solar Thermal ◽  
Water Evaporation ◽  
Black Tio2

Oxygen vacancy-rich black TiO2 nanoparticles as a highly efficient catalyst for Li–O2 batteries

2020 ◽  
Author(s):  
Juanjuan Ge ◽  
Gaohui Du ◽  
Abul Kalam ◽  
Xiang Bi ◽  
Shukai Ding ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Tio2 Nanoparticles ◽  
Efficient Catalyst ◽  
Highly Efficient ◽  
Black Tio2

Black TiO2 Nanoparticles by a Microwave-induced Plasma over Titanium Complex Aqueous Solution

2015 ◽  
Vol 44 (10) ◽  
pp. 1327-1329 ◽  
Author(s):  
Yohei Ishida ◽  
Wataru Doshin ◽  
Hiroki Tsukamoto ◽  
Tetsu Yonezawa
Keyword(s):  
Aqueous Solution ◽  
Tio2 Nanoparticles ◽  
Titanium Complex ◽  
Microwave Induced Plasma ◽  
Black Tio2

scholarly journals Phase Determination of Black TiO2 Nanoparticles

2015 ◽  
Vol 21 (S3) ◽  
pp. 815-816
Author(s):  
Meng-kun Tian ◽  
Masoud. Mahjouri-Samani ◽  
Gyula Eres ◽  
Ritesh Sachan ◽  
Matthew F. Chisholm ◽  
...  
Keyword(s):  
Tio2 Nanoparticles ◽  
Phase Determination ◽  
Black Tio2

scholarly journals Structure and Formation Mechanism of Black TiO2 Nanoparticles

ACS Nano ◽  
2015 ◽  
Vol 9 (10) ◽  
pp. 10482-10488 ◽  
Author(s):  
Mengkun Tian ◽  
Masoud Mahjouri-Samani ◽  
Gyula Eres ◽  
Ritesh Sachan ◽  
Mina Yoon ◽  
...  
Keyword(s):  
Tio2 Nanoparticles ◽  
Formation Mechanism ◽  
Black Tio2
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