Enhanced photocatalytic activity and photocurrent properties of plasma-synthesized indium-doped zinc oxide nanopowder

Murali, Arun; Sarswat, Prashant K.; Sohn, Hong Yong

doi:10.1016/j.mtchem.2018.10.007

Cited by 49 publications

(26 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to investigate the mechanism of the enhanced photocatalytic performance of 6B-TiO 2 , the samples of bare TiO 2 and B doping TiO 2 were investigated by photocurrent response, EIS and PL spectrum, and the results are shown in Figure 3. It can be seen in Figure 3A that 6B-TiO 2 shows highest photocurrent response, indicating that more electrons can be generated in 6B-TiO 2 by visible light irradiation Murali et al, 2019;Wang et al, 2019). In the EIS analysis (Figure 3B), 6B-TiO 2 exhibits a semicircle of the EIS Nyquist plot with the smallest radius, indicating the smallest interfacial charge transference impedance as compared to those of bare TiO 2 and other B doping TiO 2 (Dai et al, 2015;Zou et al, 2016;Manwar et al, 2019).…”

Section: Characterization Of B Doping Tio 2 Samplesmentioning

confidence: 94%

Optimization of Boron Doped TiO2 as an Efficient Visible Light-Driven Photocatalyst for Organic Dye Degradation With High Reusability

Niu

Chen

et al. 2020

Front. Chem.

View full text Add to dashboard Cite

No visible light activity is the bottle neck for wide application of TiO 2 , and Boron doping is one of the effective way to broaden the adsorption edge of TiO 2 . In this study, several Boron doped TiO 2 materials were prepared via a facile co-precipitation and calcination process. The B doping amounts were optimized by the degradation of rhodamine B (Rh B) under visible light irradiation, which indicated that when the mass fraction of boron is 6% (denoted as 6B-TiO 2 ), the boron doped TiO 2 materials exhibited the highest activity. In order to investigate the enhanced mechanism, the difference between B-doped TiO 2 and bare TiO 2 including visible light harvesting abilities, separation efficiencies of photo-generated electron-hole pairs, photo-induced electrons generation abilities, photo-induced charges transferring speed were studied and compared in details. h + and · O − 2 were determined to be the two main responsible active species in the photocatalytic oxidation process. Besides the high degradation efficiency, 6B-TiO 2 also exhibited high reusability in the photocatalysis, which could be reused at least 5 cycles with almost no active reduction. The results indicate that 6B-TiO 2 has high photocatalytic degradation ability toward organic dye of rhodamine B under visible light irradiation, which is a highly potential photocatalyst to cope with organic pollution.

show abstract

Section: Characterization Of B Doping Tio 2 Samplesmentioning

confidence: 94%

Optimization of Boron Doped TiO2 as an Efficient Visible Light-Driven Photocatalyst for Organic Dye Degradation With High Reusability

Niu

Chen

et al. 2020

Front. Chem.

View full text Add to dashboard Cite

show abstract

“…Indium-doped zinc oxide (IZO) nanopowders (wurtzite crystal phase) were synthesized by plasma-assisted chemical vapor synthesis route [ 93 ]. Zinc nitrate [Zn(NO 3 ) 2 ·6H 2 O, Alfa Aesar, Haverhill, MA, USA] powder was the precursor for zinc oxide synthesis, and a mixture of Zn(NO 3 ) 2 ·6H 2 O and indium nitrate [In(NO 3 ) 3 ·5H 2 O, Alfa Aesar, Haverhill, MA, USA] precursors was used for the synthesis of indium-doped zinc oxide.…”

Section: Synthesis Of Indium-doped Zinc Oxide (Izo) Nanopowdersmentioning

confidence: 99%

Plasma Synthesis of Advanced Metal Oxide Nanoparticles and Their Applications as Transparent Conducting Oxide Thin Films

Sohn

Murali

2021

Molecules

View full text Add to dashboard Cite

This article reviews and summarizes work recently performed in this laboratory on the synthesis of advanced transparent conducting oxide nanopowders by the use of plasma. The nanopowders thus synthesized include indium tin oxide (ITO), zinc oxide (ZnO) and tin-doped zinc oxide (TZO), aluminum-doped zinc oxide (AZO), and indium-doped zinc oxide (IZO). These oxides have excellent transparent conducting properties, among other useful characteristics. ZnO and TZO also has photocatalytic properties. The synthesis of these materials started with the selection of the suitable precursors, which were injected into a non-transferred thermal plasma and vaporized followed by vapor-phase reactions to form nanosized oxide particles. The products were analyzed by the use of various advanced instrumental analysis techniques, and their useful properties were tested by different appropriate methods. The thermal plasma process showed a considerable potential as an efficient technique for synthesizing oxide nanopowders. This process is also suitable for large scale production of nano-sized powders owing to the availability of high temperatures for volatilizing reactants rapidly, followed by vapor phase reactions and rapid quenching to yield nano-sized powder.

show abstract

“…The scan rate employed was 0.2 mV/s during the polarization test. Electrochemical Impedance Spectroscopy (EIS) tests were conducted in the potentiostatic mode with the following parameters: an AC signal amplitude of 5 mV, 5 points/decade and with a wide frequency range of 100 mHz-100 kHz [31]. A Reference 600 potentiostat (Warminster, PA, USA) and a three-electrode system (using platinum as the counter electrode and saturated calomel electrode as a reference) was used during the impedance measurement tests [32,33].…”

Section: Corrosion Behavior Of Heasmentioning

confidence: 99%

Design and Fabrication of New High Entropy Alloys for Evaluating Titanium Replacements in Additive Manufacturing

et al. 2020

View full text Add to dashboard Cite

High entropy alloys (HEAs) were prepared using the powder bed fusion (PBF) technique. Among titanium free alloys AlCoCrFeNiMn, CoCr1.3FeMnNi0.7, AlCoCrFeNi1.3, and AlCoCr1.3FeNi1.3 have been further investigated. A cost comparison was done for these four alloys as well as the titanium-based alloys AlCoCrFeNiTi and AlCo0.8CrFeNiTi. Such a comparison was done in order to evaluate the performance of the titanium-free alloys as the estimated cost of these will be less than for Ti-based HEAs. Hence, we have chosen four titanium free alloys and two titanium-based alloys for further processing. All these alloys were fabricated and subsequently characterized for phase, purity and performance. Scanning electron microscopy-based images were captured for microstructure characterization. EIS-based tests and potentiodynamic scans were performed to evaluate corrosion current. Hardness tests were performed for mechanical properties evaluation. Additional testing using factorial design tests was performed to evaluate the effects of various parameters to create better PBF-based HEA samples. EBSD tests, accelerated corrosion tests (mass loss), chemical analysis after degradation, microstructure analysis before and after degradation, and mechanical property comparison for finalized samples and other similar tests were executed. The details about all these HEAs and subsequent laser processing as well as behavior of these HEAs have been included in this study. It has been observed that some of the selected alloys exhibit good performance compared to Ti-based alloys, especially with respect to improvements in elastic constant and hardness relative to commercially pure Ti.

show abstract

Enhanced photocatalytic activity and photocurrent properties of plasma-synthesized indium-doped zinc oxide nanopowder

Cited by 49 publications

References 58 publications

Optimization of Boron Doped TiO2 as an Efficient Visible Light-Driven Photocatalyst for Organic Dye Degradation With High Reusability

Optimization of Boron Doped TiO2 as an Efficient Visible Light-Driven Photocatalyst for Organic Dye Degradation With High Reusability

Plasma Synthesis of Advanced Metal Oxide Nanoparticles and Their Applications as Transparent Conducting Oxide Thin Films

Design and Fabrication of New High Entropy Alloys for Evaluating Titanium Replacements in Additive Manufacturing

Contact Info

Product

Resources

About