The synergistic effects of acid treatment and silver (Ag) loading for substantial improvement of photoelectrochemical and photocatalytic activity of Na2Ti3O7/TiO2 nanocomposite

Kolaei, Morteza; Tayebi, Meysam; Lee, Byeong–Kyu

doi:10.1016/j.apsusc.2020.148359

Cited by 28 publications

(9 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…PEC water splitting requires enough energy to cause a reaction in semiconductor materials with valence and conduction band positions that are appropriate for generating hydrogen and oxygen [7] , [8] . Semiconductors for PEC should be efficient, environmentally friendly, and nontoxic end products, and they should enable cost-effective energy conversion [9] , [10] , [11] , [12] , [13] , [14] . Hematite (α-Fe 2 O 3 ) satisfies all these requirements and also has a proper band gap (E g = 2.1 eV) making it a promising candidate for water oxidation [15] , [16] , [17] , [18] , [19] , [20] .…”

Section: Introductionmentioning

confidence: 99%

Ultrasonication-assisted liquid-phase exfoliation enhances photoelectrochemical performance in α-Fe2O3/MoS2 photoanode

Masoumi

Tayebi

Lee

2021

Ultrasonics Sonochemistry

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Ultrasonication-assisted liquid-phase exfoliation enhances photoelectrochemical performance in α-Fe2O3/MoS2 photoanode

Masoumi

Tayebi

Lee

2021

Ultrasonics Sonochemistry

Self Cite

View full text Add to dashboard Cite

“…After discussing hydrogen production with CNO 1−x via photocatalysis and thermocatalysis, we further analyzed the synergy of photo-thermo catalysis from the perspective of carriers under the dark/illuminated condition with a controlled temperature by means of Mott−Schottky 32,33 and Hall effect tests. 34−36 As shown in Figure 6, the carrier concentration at 63 °C under the dark condition was 3.47 × 10 21 cm −3 , and it was 2.04 × 10 21 cm −3 at 30 °C under irradiation.…”

mentioning

confidence: 99%

Synergetic Photo-Thermo Catalytic Hydrogen Production by Carbon Materials

Wang

Chen

Zhu

et al. 2022

J. Phys. Chem. Lett.

View full text Add to dashboard Cite

Photo-thermo catalytic hydrogen production represents one of the most promising routes for channeling solar energy but typically suffers from high reaction temperatures. In this work, we develop photo-thermo catalytic hydrogen production at low temperatures by cost-effective, nonplasmonic, and metal-free nitrogen-doped carbon materials (CNO1–x ). We demonstrate that due to the photothermal conversion of CNO1–x , carrier generation is improved and electron migration is enhanced to suppress the recombination of electron–hole pairs, both of which promote hydrogen production by photocatalysis, while generated hydrogen radicals facilitate the regeneration of active sites for hydrogen production by thermocatalysis. Such synergy greatly promotes photo-thermo catalytic hydrogen production at low temperatures. These results demonstrate the great promise of photo-thermo catalytic hydrogen production over carbon materials at low temperatures.

show abstract

“…% composition. There was no other peak appeared belonging to Na2Ti3O7 or any other impurity which indicates that all of the nanocomposites primarily consist of tenorite CuO and anatase TiO2 and the addition of CuO to TiO2 did not cause any structural damages [32]. The average crystallite size calculated by the Debye-Scherrer equation and lattice parameters are given in Table 1.…”

Section: Xrd Analysismentioning

confidence: 97%

Effective removal of arsenic (V) from aqueous solutions using efficient CuO/TiO2 nanocomposite adsorbent

et al. 2022

View full text Add to dashboard Cite

The groundwater is one of the biggest natural resources for providing drinking water to millions of people all around the globe. However, the presence of large amount of arsenic(V) in water causes serious health hazards to the consumers which necessitates the development of cost-effective remediation. The CuO/TiO2 nanocomposites were prepared by the precipitation-deposition method for the removal of the arsenate ion (AsO43-) from water. The prepared samples were characterized by powder X-ray diffraction, Fourier transform infrared, and scanning electron microscopy to examine crystallite size and structure, material purity, textural features, morphology, and surface area. The effect of different operating parameters such as pH, contact time, initial concentration of arsenic(V) and nanocomposite dose on the removal rate of arsenic(V) was examined to optimize the adsorption performance of the CuO/TiO2 nanocomposite. In addition, the adsorption mechanism was studied by employing Langmuir and Freundlich adsorption isotherms to gain better understanding of the adsorption mechanism. The Freundlich adsorption isotherm fits well with the experimental data and the maximum adsorption capacity of the Langmuir model was found to be 90 mg/g for arsenic(V). The CuO/TiO2 nanocomposite shows remarkable adsorption performance for the treatment of arsenic(V) contaminated water samples. This study provides a cost-effective solution for the safe use of groundwater contaminated with arsenic.

show abstract

The synergistic effects of acid treatment and silver (Ag) loading for substantial improvement of photoelectrochemical and photocatalytic activity of Na2Ti3O7/TiO2 nanocomposite

Cited by 28 publications

References 51 publications

Ultrasonication-assisted liquid-phase exfoliation enhances photoelectrochemical performance in α-Fe2O3/MoS2 photoanode

Ultrasonication-assisted liquid-phase exfoliation enhances photoelectrochemical performance in α-Fe2O3/MoS2 photoanode

Synergetic Photo-Thermo Catalytic Hydrogen Production by Carbon Materials

Effective removal of arsenic (V) from aqueous solutions using efficient CuO/TiO2 nanocomposite adsorbent

Contact Info

Product

Resources

About