Ultrasonically synthesized N-TiO2/Ti3C2 composites: Enhancing sonophotocatalytic activity for pollutant degradation and nitrogen fixation

Ding, Zhipeng; Sun, Mingxuan; Liu, Wenzhu; Sun, Wangbing; Meng, Xianglong; Zheng, Yongqiang

doi:10.1016/j.seppur.2021.119287

Cited by 68 publications

(28 citation statements)

References 61 publications

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“…Both the TiO 2 and WO 3 are classified as n-type semiconductors due to their positive slopes (Ding et al 2021) as shown in the MS plot (Fig. 7e and f).…”

Section: Pec Measurementsmentioning

confidence: 89%

“…Besides, the V FB readings of 0.25WTi and 0.50WTi were determined to be − 0.25 and − 0.37 eV, respectively. A more negative V FB reading represents higher charge carrier density and better charge separation performance of 0.25WTi and 0.50WTi than bare TiO 2 (Ding et al 2021). Therefore, both the 0.25WTi and 0.50WTi manage to enhance the RB5 photodegradation performance.…”

Section: Pec Measurementsmentioning

confidence: 99%

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Photodegradation assessment of RB5 dye by utilizing WO3/TiO2 nanocomposite: a cytotoxicity study

Chau

Lee

Pang

et al. 2021

Environ Sci Pollut Res

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Textile dyeing wastewater becomes one of the root causes of environmental pollution. Titanium dioxide (TiO 2 ) is one of the photocatalysts that shows prominent organic dye photodegradation ability. In this study, a porous tungsten oxide (WO 3 )/ TiO 2 composite was prepared through ultrasonic-assisted solvothermal technique with varying amounts of WO 3 ranging from 0.25 to 5 weight % (wt.%). The prepared 0.50 wt.% WO 3 /TiO 2 (0.50WTi) composite exhibited the highest photodegradation activity (4.39 × 10 −2 min −1 ) and complete mineralization in chemical oxygen demand (COD) reading towards 30 mg.L −1 of Reactive Black 5 (RB5) dye under 60 min of light irradiation. Effects of large surface area, small crystallite size, high pore volume and size, and low electron-hole pair recombination rate attributed to the superiority of 0.50WTi. Besides, 0.50WTi could be reused, showing 86.50% of RB5 photodegradation at the fifth cycle. Scavenger study demonstrated that photogenerated hole (h + ) was the main active species of 0.50WTi to initiate the RB5 photodegradation. Cytotoxicity assessment determined the readings of half-maximal inhibitory concentration (IC 50 ) were 1 mg.mL −1 and 0.61 mg.mL −1 (24 and 72 h of incubations) for the 0.50WTi composite.

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“…Both the TiO 2 and WO 3 are classified as n-type semiconductors due to their positive slopes (Ding et al 2021) as shown in the MS plot (Fig. 7e and f).…”

Section: Pec Measurementsmentioning

confidence: 89%

Section: Pec Measurementsmentioning

confidence: 99%

Photodegradation assessment of RB5 dye by utilizing WO3/TiO2 nanocomposite: a cytotoxicity study

Chau

Lee

Pang

et al. 2021

Environ Sci Pollut Res

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“…Stoichiometric and microstructural engineering of the TiO 2 and SiO 2 layers further increases differences in the refractive index, which may alter transmittance at specific wavelengths 5 – 8 . Investigations of different aspects of the TiO 2 /SiO 2 system, including microstructure, crystallography, chemical composition and processing are important to determine how the refractive index can be modified 9 – 12 .…”

Section: Introductionmentioning

confidence: 99%

Ti/TiO2/SiO2 multilayer thin films with enhanced spectral selectivity for optical narrow bandpass filters

Kim

Han

et al. 2022

Sci Rep

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Thin film-based optical sensors have been attracting increasing interest for use in developing technologies such as biometrics. Multilayered dielectric thin films with different refractive indices have been utilized to modulate the optical properties in specific wavelength bands for spectral selectivity of Thin Film Narrow Bandpass Filters (TFNBFs). Progress in TFNBF design has been made with the incorporation of metallic thin films. Narrower bandwidths with higher transmittance have been achieved in specific spectral bands. In this work, Ti/TiO2/SiO2 based multilayer thin films were prepared using pulsed-DC reactive sputtering. Computer simulations using the Essential Macleod Program allowed the optimal number of layers and thickness of the multilayer thin films to be determined to efficiently tailor the optical path transmitting specific wavelength bands. The addition of Ti metal layers within dielectric (TiO2/SiO2) multilayer thin films significantly changes the cutoff frequency of transmittance at specific wavelengths. Representative 26 multilayer films consisting of Ti, TiO2, and SiO2 show lower transmittance of 10.29% at 400 nm and 10.48% at 680 nm. High transmittance of 80.42% at 485 nm was observed, which is expected to improve the spectral selectivity of the TFNBF. This work provides a contribution to future simulation based design strategy based on experimental thin film engineering for potential industrial development opportunities such as optical biometrics.

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“…Recently, Yu et al reported that the successful preparation of Z-scheme TiO 2 /Au/BiOI nanocomposite exhibited excellent photocatalytic performance for N 2 photo-fixation with a fixation Catalysts 2021, 11, 1443 2 of 13 rate of 543.53 µmol L −1 h −1 g −1 [35]. Ding et al showed that by using N-TiO 2 /Ti 3 C 2 composites, photocatalytic pollutant degradation and nitrogen fixation performance could be promoted enormously [36]. Lan et al introduced 2-ethylimidazole to synthesize a type of ordered mesoporous TiO 2, which enhanced the generation rate of H 2 [37].…”

Section: Introductionmentioning

confidence: 99%

“…The toxins released from Microcystis cells are commonly observed in surface water and threatens the drinkability of reservoir water, as it is harmful to the environment and humans [39]. The utilization of Microcystis cells can change the current situation of high-cost treatment [36,[38][39][40], and could maybe even create a platform with high potential to produce cost-competitive products. In the past few years, many techniques have been applied to solve the issue, such as physical treatments, chemical treatments, and biological treatments [41,43,44].…”

Section: Introductionmentioning

confidence: 99%

Microcystis@TiO2 Nanoparticles for Photocatalytic Reduction Reactions: Nitrogen Fixation and Hydrogen Evolution

Chang

Zhang

et al. 2021

Catalysts

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Solar-driven photocatalysis has been known as one of the most potential technologies to tackle the energy shortage and environmental pollution issues. Utilizing bio-pollutants to prepare functional materials has been considered as a green option. Herein, we used Microcystis aeruginosa as a bio-template to fabricate a Microcystis@TiO2 photocatalyst using a calcination method. The as-prepared Microcystis@TiO2 showed prominent ability as well as favorable stability for photocatalytic reduction reactions including hydrogen evolution and nitrogen fixation. Under light illumination, Microcystis@TiO2 calcined at 550 °C exhibited optimal photo-reduced activity among all samples, with the highest hydrogen evolution (1.36 mmol·g−1·h−1) and ammonia generation rates (0.97 mmol·g−1·h−1). This work provides a feasible approach to prepare functional materials from disposed pollutants.

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Ultrasonically synthesized N-TiO2/Ti3C2 composites: Enhancing sonophotocatalytic activity for pollutant degradation and nitrogen fixation

Cited by 68 publications

References 61 publications

Photodegradation assessment of RB5 dye by utilizing WO3/TiO2 nanocomposite: a cytotoxicity study

Photodegradation assessment of RB5 dye by utilizing WO3/TiO2 nanocomposite: a cytotoxicity study

Ti/TiO2/SiO2 multilayer thin films with enhanced spectral selectivity for optical narrow bandpass filters

Microcystis@TiO2 Nanoparticles for Photocatalytic Reduction Reactions: Nitrogen Fixation and Hydrogen Evolution

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