Exceptional photodecomposition activity of heterostructure NiTiO3–TiO2 catalyst

Anh, Nguyễn Phương; Tri, Nguyen; Ha, Ahmed; Cuong, Hoang Tien; Vân, Nguyễn Thị Thuỳ; Trung, Nguyễn Đình; Lộc, Lưu Cẩm

doi:10.1016/j.jsamd.2021.100407

Cited by 6 publications

(9 citation statements)

References 64 publications

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“…The physicochemical characteristics of the samples were studied by several methods, which are described in detail in the article . Briefly, X-ray powder diffraction (XRD) on a Bruker D2 Phaser X-Ray diffractometer with Cu Kα radiation (λ = 0.1542 nm), field emission scanning electron microscopy (FE-SEM) using Hitachi S4800, high-resolution transmission electron microscopy (HR-TEM) on a JEOL JEM 1400; energy-dispersive X-ray spectroscopy (EDS) on a JEOL JST-IT 200 instrument and the weight percent of the elements present in the x CTO/Ti catalyst composition was calculated by eq W normali = italicxM normali + ( 100 − x ) M normali italicxM CoTiO 3 + ( 100 − x ) M TiO 2 × 100 where W i is the weight percent of the element (i = Co, Ti, and O), x is the mass percent of the CTO present in the catalyst x CTO/Ti, M i is the mass of an element in the catalyst, M CoTiO 3 is the molecular weight of CoTiO 3 , and M TiO 2 is the molecular weight of TiO 2 .…”

Section: Methodsmentioning

confidence: 99%

“…The mixed catalysts enable a red-shift in the absorption band from UV (λ = 385 nm) to UV-A light (λ = 404−412 nm) that improved the activity of the catalyst in CA photodegradation. 23 In some studies, TiO 2 was combined with pseudobrookites such as Fe 2 TiO 5 24,25 or Al 2 TiO 5 26 to construct heterostructure photocatalysts having high efficiency. In this work, 24 the type-II heterojunction Fe 2 TiO 5 /TiO 2 was synthesized by carbon templates and ion adsorption.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The physicochemical characteristics of the samples were studied by several methods, which are described in detail in the article. 23 Briefly, X-ray powder diffraction (XRD) on a Bruker D2 Phaser X-Ray diffractometer with Cu Kα radiation (λ = 0.1542 nm), field emission scanning electron microscopy (FE-SEM) using Hitachi S4800, high-resolution transmission electron microscopy (HR-TEM) on a JEOL JEM 1400; energy-dispersive Xray spectroscopy (EDS) on a JEOL JST-IT 200 instrument and the weight percent of the elements present in the xCTO/ Ti catalyst composition was calculated by eq 1…”

Section: ■ Introductionmentioning

confidence: 99%

“…Combination TiO 2 with visible-light-sensitized NiTiO 3 has significantly enhanced the surface area, light absorption, and charge separation for photocatalytic hydrogen evolution. , Attaching a small amount of NiTiO 3 to TiO 2 reduces the particle size and average crystallite size (8.6 vs 34.8 nm) and lowers the band gap energy (3.02 vs 3.20 eV). The mixed catalysts enable a red-shift in the absorption band from UV (λ = 385 nm) to UV-A light (λ = 404–412 nm) that improved the activity of the catalyst in CA photodegradation …”

Section: Introductionmentioning

confidence: 99%

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Green Fabrication of Heterostructured CoTiO₃/TiO₂ Nanocatalysts for Efficient Photocatalytic Degradation of Cinnamic Acid

Nguyen

Tri

2022

ACS Omega

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In this work, CoTiO 3 /TiO 2 (CTO/Ti) heterostructures were prepared by a hydrothermal procedure in a neutral medium using perovskite CoTiO 3 and tetraisopropyl titanate. Characteristics of the synthesized catalysts were analyzed by various techniques including X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, UV−vis diffuse reflectance spectroscopy, Brunauer−Emmett−Teller adsorption−desorption, energy-dispersive X-ray spectroscopy, field emission scanning electron microscopy, high-resolution transmission electron microscopy, and point of zero charges. The activity in the photodegradation of cinnamic acid (CA) under UV-A irradiation of the CTO/Ti heterostructure was investigated and compared with individual materials TiO 2 (Ti-w) and CoTiO 3 (CTO). The investigation showed that the heterostructured CoTiO 3 /TiO 2 catalyst with optimal composition (5% CTO) exhibited much higher photocatalytic activity for degradation of cinnamic acid than individual CoTiO 3 and TiO 2 . Under the optimal conditions (C cat = 0.75 g/L, Q air = 0.3 L/min, and pH = 3.8) the 90 min conversion of cinnamic acid reached 80.9% on 5CTO/Ti, much higher than those of CTO (4.6%) and Ti-w (75.2%). It was found that the enhancement in activity for the CA removal of the CTO/Ti heterostructure was due to the construction of a heterojunction structure between TiO 2 (Ti-w) and CoTiO 3 that resulted in an increase in the specific surface area and porosity, reduction of the band gap energy, and higher efficient separation of charge carriers on the surface to prevent recombination. Alternatively, a comparison of the recyclability of 5CTO/Ti and Ti-w was made for CA degradation. The results showed a decrease in the CA conversion by 38% on 5CTO/Ti and 48% on Ti-w after six reaction cycles.

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Section: Methodsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Green Fabrication of Heterostructured CoTiO₃/TiO₂ Nanocatalysts for Efficient Photocatalytic Degradation of Cinnamic Acid

Nguyen

Tri

2022

ACS Omega

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“…Fe 2 TiO 5 and perovskite NiTiO 3 were prepared by sol-gel method according to the procedure described in detail in the works [17,18], respectively. First, 4.04 g of Fe(NO 3 ) 3 •9H 2 O (99.9%, Merck, Germany) or Ni(NO 3 ) 2 •6H 2 O (99.9%, Merck, Germany) and 2.1 g of C 6 H 8 O 7 •H 2 O (99.9%, Merck, Germany) were dissolved with 5 mL of C 2 H 5 OH (99%, Merck, Germany).…”

Section: Pseudobookitementioning

confidence: 99%

Antibacterial activity of green fabricated silver-doped titanates

Tri

Nguyen

et al. 2022

Fine Chem. Technol.

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Objectives. The study aimed to synthesize the multifunctional materials silver-added titanates via reduction of sol-gel fabricating titanates (Fe2TiO5 and NiTiO3) with Jasminium subtriplinerve Blume leaf extract.Methods. The physicochemical characteristics of the obtained materials were determined by X-ray diffraction, energy dispersive X-Ray spectroscopy, Raman spectroscopy, Brunauer–Emmett–Teller specific surface area, scanning electron microscopy, and UV–Vis absorption spectroscopy.Results. The results demonstrated good dispersion of silver on the surface of Fe2TiO5 and NiTiO3 to create photocatalysts with two light-absorbing regions. The obtained materials were applied as antibacterial agents in polluted water. The Ag–Fe2TiO5 (Ag–FTO) samples showed better properties and antibacterial activity than Ag–NiTiO3 (Ag–NTO) due to the better dispersion of silver nanoparticles on the FTO surface. Besides, the antibacterial results exhibit increased inhibiting activity against gram-negative (−) bacteria as compared with gram-positive (+) bacteria.Conclusions. Nanomaterials Fe2TiO5 and NiTiO3 added Ag were successfully synthesized. These materials showed excellent inhibition against Baccilus cereus, Escherichia coli, Pseudomonas aeruginosa, Salmonella typhi, and Staphylococcus aureus. Additionally, the Ag–Fe2TiO5 samples showed much better antibacterial activity than the Ag–NiTiO3 sample.

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Synthesis of Nickel Titanite from Nickel Recovery from Spent Ni–MH Batteries

Rodrigues,

Rainha,

Cruz

et al. 2024

J. Phys. Chem. C

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In this work, different synthesis routes from the anode and cathode of a spent nickel metal hydride (Ni-MH) battery were studied for the purpose of producing different ceramic precursors for the formation of nickel titanate (NiTiO 3 ). The precursors were subjected to heat treatments at different temperatures to form NiTiO 3 , in which samples 1A and 2A were obtained from the anode and sample 1C from the cathode. The metal content of the Ni-MH battery's active devices was determined by inductively coupled plasma optical-emission spectrometry. The contents were characterized by thermogravimetry, Fourier-transform infrared spectroscopy, Raman spectroscopy, scanning electron microscopy with energy-dispersive X-ray spectroscopy, transmission electron microscopy, and X-ray diffraction. The FTIR spectra of samples 1A, 2A, and 1C heat-treated at 800 °C with a 2 h isotherm indicated the existence of two main absorption regions in all the samples: the first, at 525 cm −1 , was attributed to Ti−O stretching, and the second, at 440 cm −1 , to the Ti−O−Ni bond attributed to the formation of NiTiO 3 . The Raman spectra of all of the samples obtained through the heat treatment showed intense vibrational modes for NiTiO 3 . The diffractograms occurrence of NiTiO 3 and TiO 2 phases was identified in all samples, which is in agreement with the data files PDF #33−0960 (NiTiO3, nickel titanate) and PDF #21−1276 (TiO 2 , rutile), it is important to highlight that the bunsenite phase, according to PDF #47−1049 (NiO), was observed in samples 1A and 1C. All the synthesis routes were successful in forming NiTiO 3 from the active material of the Ni-MH battery.

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Exceptional photodecomposition activity of heterostructure NiTiO3–TiO2 catalyst

Cited by 6 publications

References 64 publications

Green Fabrication of Heterostructured CoTiO₃/TiO₂ Nanocatalysts for Efficient Photocatalytic Degradation of Cinnamic Acid

Green Fabrication of Heterostructured CoTiO₃/TiO₂ Nanocatalysts for Efficient Photocatalytic Degradation of Cinnamic Acid

Antibacterial activity of green fabricated silver-doped titanates

Synthesis of Nickel Titanite from Nickel Recovery from Spent Ni–MH Batteries

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Exceptional photodecomposition activity of heterostructure NiTiO3–TiO2 catalyst

Cited by 6 publications

References 64 publications

Green Fabrication of Heterostructured CoTiO3/TiO2 Nanocatalysts for Efficient Photocatalytic Degradation of Cinnamic Acid

Green Fabrication of Heterostructured CoTiO3/TiO2 Nanocatalysts for Efficient Photocatalytic Degradation of Cinnamic Acid

Antibacterial activity of green fabricated silver-doped titanates

Synthesis of Nickel Titanite from Nickel Recovery from Spent Ni–MH Batteries

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Product

Resources

About

Green Fabrication of Heterostructured CoTiO₃/TiO₂ Nanocatalysts for Efficient Photocatalytic Degradation of Cinnamic Acid

Green Fabrication of Heterostructured CoTiO₃/TiO₂ Nanocatalysts for Efficient Photocatalytic Degradation of Cinnamic Acid