“…The only difference observed is that the patterns of TiO2-2 and TiO2-3 are identical, and slightly sharper than that of TiO2-1. All peaks at 2θ of 25 , proved that the samples are crystallized in pure anatase phase. The crystallite sizes was calculated from the full width at half maximum (FWHM) of the (101) peak of XRD pattern using Scherrer equation.…”
Section: Morphology and Structurementioning
confidence: 84%
“…The only difference observed is that the patterns of TiO 2 -2 and TiO 2 -3 are identical, and slightly sharper than that of TiO 2 -1. All peaks at 2θ of 25 The crystallographic structure of TiO2 samples was characterized with X-ray diffraction (XRD). As shown in Figure 3, three samples have the same number of diffraction peaks, each at the same 2θ location.…”
Section: Morphology and Structurementioning
confidence: 99%
“…Several methods have been reported in the literature for the synthesis of C-doped TiO 2 [21][22][23][24][25], some produced C-doped TiO 2 with sharp UV-Vis absorption edge with variable anatase TiO 2 phase stability and morphology [21][22][23] and some produced materials with poorly crystallized structure lack of a sharp UV-Vis adsorption edge [24,25]. Shi et al [23] prepared C-doped TiO 2 hollow spheres with hierarchical macroporous channels using carbon spheres as both a template and a carbon doping source.…”
Section: Introductionmentioning
confidence: 99%
“…lack of a sharp UV-Vis adsorption edge [24,25]. Shi et al [23] prepared C-doped TiO2 hollow spheres with hierarchical macroporous channels using carbon spheres as both a template and a carbon doping source.…”
Abstract:Highly crystallized C-doped mesoporous anatase TiO 2 is prepared using a multi-walled carbon nanotube (MWCNT) mat as both a "rigid" pore template and a carbon doping source. SEM and TEM characterization shows that the MWCNT template imposed a pore structure in reverse of that of the MWCNT mat. The pore walls are formed by chain-like interconnected TiO 2 nanocrystals with an average diameter about 10 nm, and pores are derived from spaces occupied by MWCNTs before removal. XRD characterization shows that TiO 2 is crystallized with a pure anatase phase. XPS characterization reveals that the relative carbon content in the TiO 2 is related to the duration of TiO 2 /MWCNT composite annealing before removal of MWCNT template. Three plateau of adsorption from 450-800 nm in UV-Vis spectra in comparison to that of P25; and display visible light photocatalytic activity for decomposition of methyl orange (MO) in relationship with the carbon content and crystallinity of the anatase TiO 2 .
“…The only difference observed is that the patterns of TiO2-2 and TiO2-3 are identical, and slightly sharper than that of TiO2-1. All peaks at 2θ of 25 , proved that the samples are crystallized in pure anatase phase. The crystallite sizes was calculated from the full width at half maximum (FWHM) of the (101) peak of XRD pattern using Scherrer equation.…”
Section: Morphology and Structurementioning
confidence: 84%
“…The only difference observed is that the patterns of TiO 2 -2 and TiO 2 -3 are identical, and slightly sharper than that of TiO 2 -1. All peaks at 2θ of 25 The crystallographic structure of TiO2 samples was characterized with X-ray diffraction (XRD). As shown in Figure 3, three samples have the same number of diffraction peaks, each at the same 2θ location.…”
Section: Morphology and Structurementioning
confidence: 99%
“…Several methods have been reported in the literature for the synthesis of C-doped TiO 2 [21][22][23][24][25], some produced C-doped TiO 2 with sharp UV-Vis absorption edge with variable anatase TiO 2 phase stability and morphology [21][22][23] and some produced materials with poorly crystallized structure lack of a sharp UV-Vis adsorption edge [24,25]. Shi et al [23] prepared C-doped TiO 2 hollow spheres with hierarchical macroporous channels using carbon spheres as both a template and a carbon doping source.…”
Section: Introductionmentioning
confidence: 99%
“…lack of a sharp UV-Vis adsorption edge [24,25]. Shi et al [23] prepared C-doped TiO2 hollow spheres with hierarchical macroporous channels using carbon spheres as both a template and a carbon doping source.…”
Abstract:Highly crystallized C-doped mesoporous anatase TiO 2 is prepared using a multi-walled carbon nanotube (MWCNT) mat as both a "rigid" pore template and a carbon doping source. SEM and TEM characterization shows that the MWCNT template imposed a pore structure in reverse of that of the MWCNT mat. The pore walls are formed by chain-like interconnected TiO 2 nanocrystals with an average diameter about 10 nm, and pores are derived from spaces occupied by MWCNTs before removal. XRD characterization shows that TiO 2 is crystallized with a pure anatase phase. XPS characterization reveals that the relative carbon content in the TiO 2 is related to the duration of TiO 2 /MWCNT composite annealing before removal of MWCNT template. Three plateau of adsorption from 450-800 nm in UV-Vis spectra in comparison to that of P25; and display visible light photocatalytic activity for decomposition of methyl orange (MO) in relationship with the carbon content and crystallinity of the anatase TiO 2 .
“…目前, Pt, Ru, Pd, Au 和 Ag 等贵金 属改性的 TiO 2 已广泛应用于光催化还原 CO 2 研究 中 [18,19] . 研究表明, N [20] , I [21] , C [22] , S [23] 和 B [24] 等非金属 的掺杂可以降低 TiO 2 的禁带宽度, 提高 TiO 2 的可见光 催化活性.…”
Well-dispersed carbon-doped ZnSn(OH) 6 submicrocubes were successfully synthesized through a facile and economical hydrothermal method at 433K, which used green chemical glucose (C 6 H 12 O 6 ) as the carbon-doping source. Photocatalytic activity of the as-synthesized C-doped ZnSn(OH) 6 was evaluated by studying photocatalytic decomposition of methylene blue (MB) in aqueous solution under visible light irradiation(ࣙ 400 nm). The results show that carbondoped ZnSn(OH) 6 photocatalysts exhibited higher photocatalytic performance as compared to pure ZnSn(OH) 6 . 1.0 wt% C-doped ZnSn(OH) 6 photocatalyst exhibited obviously higher photocatalytic activity that of pure ZnSn(OH) 6 or other C-ZnSn(OH) 6 catalysts under the same condition. The enhanced photocatalytic degradation of MB could be attributed to the doping of carbon and the possible mechanism for high photocatalytic activity of C-doped ZnSn(OH) 6 was discussed.
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