Great enhancement in photocatalytic performance of (001)-TiO2 through N-doping via the vapor-thermal method

Qian, N.X.; Zhang, X.; Wang, M.; Sun, Xiaoyu; Liu, Chaocheng; Rao, R. Gowri Shankar; Hu, Jiyu

doi:10.1016/j.jphotochem.2019.112127

Cited by 13 publications

(5 citation statements)

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“…Additionally, a faint XPS shoulder peak at 397.3 eV can be observed, which can be assigned to substitution-doped N species. Previous studies by several other authors attribute the N 1s peaks (396–404 eV) to the feature of N-doped TiO 2 , , However, in other literature, this N 1s characteristic peak does not exist but appears at a higher BE position. , It was regarded that N doping in TiO 2 will form defect states such as oxygen vacancies, which can selectively anchor metal species and are beneficial to enhance the metal–support interaction. , Furthermore, the F 1s spectrum shown in Figure S6f with one peak at 684.6 eV corresponds to the Ti–F species. EPR measurement is conducted to investigate the defective features (oxygen vacancy or Ti 3+ sites) of the catalyst.…”

Section: Resultsmentioning

confidence: 93%

“…Previous studies by several other authors attribute the N 1s peaks (396− 404 eV) to the feature of N-doped TiO 2 , 58,59 However, in other literature, this N 1s characteristic peak does not exist but appears at a higher BE position. 34,60 It was regarded that N doping in TiO 2 will form defect states such as oxygen vacancies, which can selectively anchor metal species and are beneficial to enhance the metal−support interaction. 61,62 Furthermore, the F 1s spectrum shown in Figure S6f with one peak at 684.6 eV corresponds to the Ti−F species.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Pd Nanoparticles Supported on N-Doped TiO₂ Nanosheets: Crystal Facets, Defective Sites, and Metal–Support Interactions Boost Reforming of Formaldehyde Solution for Hydrogen Production

2022

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To produce H2 from formaldehyde (HCHO), dehydrogenation offers an alternative approach to future hydrogen-based energy sources, but the unsatisfactory efficiency hinders its practical application. Here, ultrafine Pd nanoparticle (NP) decorated N-doped TiO2 nanosheets exposed with (001) facet catalysts (denoted as Pd/TiO2–x ) have been prepared and exhibit superior H2 production performance from alkaline HCHO aqueous solution. Under our current conditions, the Pd/TiO2–x catalyst with a Pd loading of 1 wt % exhibits a H2 production rate of 183.77 mL/min/g, which is 1.75 and 3.66 times that of Pd/TiO2 and Pd NPs, respectively. Based on the results of Fourier transform infrared spectroscopy (FTIR), Raman, and liquid-phase electron paramagnetic resonance (EPR) spin-trapping experiments, the excellent H2 generation of Pd/TiO2–x can be attributed to the synergistic contribution among the reactive crystal facets, defective sites, and metal–support interactions in boosting the breakage of C–H bonds in HCHO, dissociation of H2O, and ultimately the formation of H2. This work is expected to provide a paradigm of an efficient catalyst to produce H2 from HCHO/H2O solution.

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Section: Resultsmentioning

confidence: 93%

Section: ■ Results and Discussionmentioning

confidence: 99%

Pd Nanoparticles Supported on N-Doped TiO₂ Nanosheets: Crystal Facets, Defective Sites, and Metal–Support Interactions Boost Reforming of Formaldehyde Solution for Hydrogen Production

2022

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“…A larger surface area of a photocatalyst enables better degradation of contaminants. 35 The surface area and pore size distribution of the SrO 2 were examined by the nitrogen sorption process of Brunauer–Emmett–Teller (BET) analysis. Fig.…”

Section: Resultsmentioning

confidence: 99%

Strontium peroxide as a potential photocatalyst: rapid degradation of organic and pharmaceutical pollutants

Harikaran,

2023

New J. Chem.

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“…2 Reduction of the band gap energy, which can be achieved by doping TiO2 with non-metal elements, such as C, B, S and N, [2][3][4][5][6] spread the spectral response of TiO2 into the visible region. Also, it was found 7 that N doping of TiO2enhances the photocatalytic performance under UV irradiation by increasing the specific surface area of a photocatalyst.…”

Section: Introductionmentioning

confidence: 99%

Influence of N doping on structural and photocatalytic properties of hydrothermally synthesized TiO2/carbon composites

Maletić¹,

Kalijadis

Lazović

et al. 2023

JSCS

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N-doped TiO2/carbon composites (TiO2/CN) with different nitrogen content, were obtained starting from titanium isopropoxide and glucose, and by varying the amount of melamine, added to starting reaction mixture. For comparison, an undoped sample (TiO2/C) was also prepared. Structural and surface characteristics were determined through scanning electron microscopy, thermogravimetric analysis, elemental analysis, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and nitrogen adsorptiondesorption isotherms. The photocatalytic activity of TiO2/CN composites was examined via photocatalytic degradation of methylene blue and multiclass pharmaceuticals from water solution. It was found that N doping of TiO2 carbon composites induced changes in structural and surface characteristics of TiO2/CN composites, improving their adsorption, but decreasing photocatalytic efficiency. Nevertheless, TiO2/CN0.05 composite obtained by the hydrothermal synthesis in the presence of glucose and 0.05 g melamine showed the highest efficiency for removing selected pharmaceuticals and methylene blue from aqueous solutions through the combined processes of adsorption in the dark, and photocatalytic degradation under UV and visible irradiation.

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Great enhancement in photocatalytic performance of (001)-TiO2 through N-doping via the vapor-thermal method

Cited by 13 publications

References 59 publications

Pd Nanoparticles Supported on N-Doped TiO₂ Nanosheets: Crystal Facets, Defective Sites, and Metal–Support Interactions Boost Reforming of Formaldehyde Solution for Hydrogen Production

Pd Nanoparticles Supported on N-Doped TiO₂ Nanosheets: Crystal Facets, Defective Sites, and Metal–Support Interactions Boost Reforming of Formaldehyde Solution for Hydrogen Production

Strontium peroxide as a potential photocatalyst: rapid degradation of organic and pharmaceutical pollutants

Influence of N doping on structural and photocatalytic properties of hydrothermally synthesized TiO2/carbon composites

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Great enhancement in photocatalytic performance of (001)-TiO2 through N-doping via the vapor-thermal method

Cited by 13 publications

References 59 publications

Pd Nanoparticles Supported on N-Doped TiO2 Nanosheets: Crystal Facets, Defective Sites, and Metal–Support Interactions Boost Reforming of Formaldehyde Solution for Hydrogen Production

Pd Nanoparticles Supported on N-Doped TiO2 Nanosheets: Crystal Facets, Defective Sites, and Metal–Support Interactions Boost Reforming of Formaldehyde Solution for Hydrogen Production

Strontium peroxide as a potential photocatalyst: rapid degradation of organic and pharmaceutical pollutants

Influence of N doping on structural and photocatalytic properties of hydrothermally synthesized TiO2/carbon composites

Contact Info

Product

Resources

About

Pd Nanoparticles Supported on N-Doped TiO₂ Nanosheets: Crystal Facets, Defective Sites, and Metal–Support Interactions Boost Reforming of Formaldehyde Solution for Hydrogen Production

Pd Nanoparticles Supported on N-Doped TiO₂ Nanosheets: Crystal Facets, Defective Sites, and Metal–Support Interactions Boost Reforming of Formaldehyde Solution for Hydrogen Production