Investigation of nitrogen doped and carbon species decorated TiO2 with enhanced visible light photocatalytic activity by using chitosan

Shao, Yu; Cao, Changsheng; Chen, Shiliang; He, Miao; Fang, Jialin; Chen, Jing; Li, Xiaofang; Li, Danzhen

doi:10.1016/j.apcatb.2015.05.023

Cited by 128 publications

(83 citation statements)

References 61 publications

(66 reference statements)

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“…The N1s peak could be fitted with three peaks, existing at 396.2, 399.6, and 401.4 eV, respectively. The peak of 396.2 eV could be assigned to Ti-N band, [39] which indicated that some of the N atoms entered into TiO2 crystal lattice via the substitution of an O atom, which was consistent with Ti peaks of 457.3 and 463.3 eV. It was reported that the band gap of TiO2 could be narrowed by doping N into TiO2 crystal lattice, replacing the O atom.…”

Section: Sem and Tem Analysissupporting

confidence: 54%

“…One existed at 458.6 and 464.4 eV, which were attributed to the Ti-O band. [39] The other existed at 457.3 and 463.3 eV, which were attributed to the Ti-N band, [40] which indicated that N was connected with Ti in the TiO2 crystal rather that an O atom. The O1s peak was fitted with two peaks, existing at 530.5 and 532.3 eV, respectively.…”

Section: Sem and Tem Analysismentioning

confidence: 99%

“…The 399.6 eV peak could be attributed to Ti-O-N, indicating that some of the N atoms existed interstitially within the TiO2 crystal. The peak of 401.4 eV was assigned to the N-H band [39,40] (likely coming from urea, the precursor of nitrogen), and Zr3d peaks existed at 184.6 and 182.5 eV, which were attributed to the Zr-O band. [41,42] The C 1s peak was fitted by three peaks, existing at 284.8, 286.3, and 288.1 eV, respectively.…”

Section: Sem and Tem Analysismentioning

confidence: 99%

“…It was reported that the band gap of TiO2 could be narrowed by doping N into TiO2 crystal lattice, replacing the O atom. [39,40] Hence, it might be theorized that the band gap of the material might be narrowed, as the peak of Ti-N band was found. The 399.6 eV peak could be attributed to Ti-O-N, indicating that some of the N atoms existed interstitially within the TiO2 crystal.…”

Section: Sem and Tem Analysismentioning

confidence: 99%

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Enhanced Adsorption and Photocatalysis by Introduction of C into N, Zr/TiO2

Liu¹,

Li²,

Bai³

et al. 2018

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The introduction of carbon (C) into TiO2 may facilitate charge transfer and thus improve its photocatalytic activities. In this paper, C was introduced into N, Zr/TiO2 via ultrasound and calcination using glucose as carbon precursor. The as-prepared C@N, Zr/TiO2 was characterized by SEM, TEM, XRD, UV-Vis DRS, and XPS. The adsorption abilities of the materials were evaluated using two anion dyes [methylene blue (MB) and basic violet (BV)] and two cation dyes [titan yellow (TY) and congo red (CR)] as model pollutants. The photocatalytic activities were investigated through the degradation of Ciprofloxacin (CIP) under simulated sunlight irradiation. The results revealed that the appropriate introduction of carbon may improve the adsorption abilities and the photocatalytic activities of non-carbonaceous materials. Furthermore, several samples exhibited selective adsorption abilities for cation dyes, which suggested the potential application of the as-prepared materials for the selective removal of co-existing pollutants.

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Section: Sem and Tem Analysissupporting

confidence: 54%

Section: Sem and Tem Analysismentioning

confidence: 99%

Section: Sem and Tem Analysismentioning

confidence: 99%

Section: Sem and Tem Analysismentioning

confidence: 99%

See 2 more Smart Citations

Enhanced Adsorption and Photocatalysis by Introduction of C into N, Zr/TiO2

Liu¹,

Li²,

Bai³

et al. 2018

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“…Photocatalytic materials, especially TiO 2 are currently of great interest for application in photocatalysis [11,12]. The efficiency of this application is based on generating electron-hole pair on the catalyst surface and inducing the formation of radicals [13].…”

Section: Introductionmentioning

confidence: 99%

Preparation of a Photoactive 3D Polymer Pillared with Metalloporphyrin

Zargari¹,

Rahimi²,

A³

2017

J Material Sci Eng

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Among the very few efforts for the preparation of stable pillared graphene nanostructures, there is no report of tin porphyrin intercalated between TiO 2 -graphene (TG) nanosheets. In this study, a nanostructure material of pillared graphene made of tin porphyrin functionalized graphene-TiO 2 composite (TG) was successfully synthesized. The prepared compound showed high activity in the photodegradation reaction under irradiation of visible light.Photocatalytic results showed that the composite of graphene-TiO 2 containing 3% graphene had the highest photoactivity. The photoactivity of TG (3%) was about 1.5 times higher than that of the pure TiO 2 .Besides, tin porphyrin-pillared TG composite (TGSP) material exhibited an excellent visible light photocatalytic performance in degradation of methyl orange dye. This compound could destruct 100% of methyl orange dye in 180 min. Such pillared carbon nanostructure exhibited unique photoactivity due to the synergistic effect between the graphene sheets and the SnTCPP pillars. It is found that the highly efficient light-harvesting structure of the SnTCPP pillared TG composite can be attributed to densely embedded porphyrin chromophores with high visible absorptivity within the framework. The investigation of photocatalytic mechanism determined that hydroxyl radical is a main species in photodegradation process of methyl orange over TGSP compound.

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Hydrogen Production from Pure Water via Piezoelectric‐assisted Visible‐light Photocatalysis of CdS Nanorod Arrays

et al. 2018

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Visible-light-driven H 2 production from pure water is highly promising but unfortunately inefficient. Herein, for the first time, we report the realization of pure-water-splitting H 2 production under visible-light irradiation via single-component CdS without any cocatalysts, employing a piezoelectric-photocatalysis strategy. Wurtzite CdS nanorod arrays that combine piezoelectric and visible-light photocatalytic properties was insitu assembled on FTO substrates to harvest both solar energy and ultrasonic vibration energy in water. The ultrasoundinduced piezoelectric field in CdS drives the separation of photo-generated charge carriers, leading to more facile watersplitting for H 2 evolution than that under visible-light irradiation alone. The CdS nanorod arrays achieves a high H 2 production rate of 20 mL . h À1 under optimized coupling field, which is much higher than that of unsupported samples. This work demonstrates the capability of piezoelectric photocatalysts to simultaneously convert visible light energy and acoustic energy into hydrogen energy, which may break a new ground for the design of energy-conversion materials towards harvesting discrete ambient energy in urban environment.

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Investigation of nitrogen doped and carbon species decorated TiO2 with enhanced visible light photocatalytic activity by using chitosan

Cited by 128 publications

References 61 publications

Enhanced Adsorption and Photocatalysis by Introduction of C into N, Zr/TiO2

Enhanced Adsorption and Photocatalysis by Introduction of C into N, Zr/TiO2

Preparation of a Photoactive 3D Polymer Pillared with Metalloporphyrin

Hydrogen Production from Pure Water via Piezoelectric‐assisted Visible‐light Photocatalysis of CdS Nanorod Arrays

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