Low Temperature Synthesis of Nest-Like Microsphere with Exposed (001) Facets and Its Enhanced Photocatalytic Performance by NaOH Alkalization

Hou, Chun‐Li; Zhu, Jiaming; Song, Qiaoqiao

doi:10.3390/catal8020070

Cited by 9 publications

(4 citation statements)

References 43 publications

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“… 27 The broad emission band centered at 400 nm is ascribed to bound exciton emission due to the trapping of free excitons by titanate groups near defects. 41 Therefore, it can be inferred that Cu 2 O@TiOF 2 /TiO 2 can improve the electron–hole recombination and exhibit high photocatalytic activity.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Cu₂O@TiOF₂/TiO₂and its photocatalytic degradation of tetracycline hydrochloride wastewater

et al. 2019

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Section: Resultsmentioning

confidence: 99%

Preparation of Cu₂O@TiOF₂/TiO₂and its photocatalytic degradation of tetracycline hydrochloride wastewater

et al. 2019

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“…2 /TiOF 2 nanohybrids, except OH-S2. It was concluded that TiO 2 /TiOF 2 nanohybrids can adsorb more OH to enhance photocatalytic performance[31][32][33][34][35][36][37].…”

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confidence: 99%

One-step synthesis of OH-TiO ₂ /TiOF ₂ nanohybrids and their enhanced solar light photocatalytic performance

Hou¹,

Liu²

2018

R. Soc. open sci.

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TiO2/TiOF2 nanohybrids were quickly synthesized through a hydrothermal process using titanium n-butoxide (TBOT), ethanol (C2H5OH) and hydrofluoric acid as precursors. The prepared nanohybrids underwent additional NaOH treatment (OH-TiO2/TiOF2) to enhance their photocatalytic performance. In this paper, the mechanism of NaOH affecting the pathway of transformation from TBOT (Ti precursor) to TiO2 nanosheets was discussed. The synthesized TiO2/TiOF2 and OH-TiO2/TiOF2 were characterized by field emission scanning electron microscopy (FE-SEM), high-resolution transmission electron microscopy (HRTEM), X-ray diffraction pattern (XRD), Fourier infrared spectroscopic analysis (FT-IR), Photoluminescence (PL) emission spectra and UV–visible diffuse reflection spectra (UV–vis DRS). The photocatalytic activity and stability of synthesized samples were evaluated by degradation of methylene blue (MB) under the simulated solar light. The results showed that a larger ratio of TiO2 to TiOF2 in TiO2/TiOF2 and OH-TiO2/TiOF2 nanohybrids could allow for even higher MB conversion compared with only TiO2 nanosheets. NaOH treatment can wash off the F ions from TiOF2 and induce this larger ratio. The highest efficiency of MB removal was just above 90% in 1 h. Lower electron–hole pairs recombination rate is the dominant factor that induces the photocatalytic performance enhancement of TiO2/TiOF2 nanohybrids. The synthesized OH-TiO2/TiOF2 nanohybrids exhibit great potential in the abatement of organic pollutants.

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“…Figure 6 displays the FT-IR spectra of GO, RGO and RGO-P25. The absorption peaks at 3420 cm −1 and 1634 cm −1 , which could be ascribed to the adsorbed water molecules on the particles [36,37].…”

Section: Uv-vis Diffuse Reflection Spectra Analysismentioning

confidence: 97%

Preparation of RGO-P25 Nanocomposites for the Photocatalytic Degradation of Ammonia in Livestock Farms

Long

Liu

et al. 2018

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In this paper, the Hummer's method was used to prepare the compound catalyst of reduced graphene and TiO 2 (RGO-P25), and the sand core plate was used as the carrier to provide the theoretical basis for the application of animal environmental purification by exploring the degradation of ammonia in RGO-P25. Characterization results show that the band gap of P25 is reduced from 3.14 eV to 2.96 eV after the combination of RGO, and the recombination rate of the photogenerated electrons and holes also decreased significantly, both resulting in the improvement of ammonia degradation by composite catalysts. Experimental results show that the carrier (sand core plate) and RGO-P25 are effectively stabilized with Si-O-Ti, but the blank core plate carrier could not degrade the ammonia, and its adsorption is not obvious, only 5% ± 1%, under 300 W ultraviolet lamp irradiation, the degradation rates of P25, RGO and RGO-P25 for ammonia at initial concentrations of 119-124 ppm were 72.25%, 81.66% and 93.64%, respectively. P25 dispersed through RGO can effectively adsorb ammonia on the surface to provide a reaction environment and thereby improve its photocatalytic efficiency, thus, endowing the RGO-P25 composites with higher photocatalytic degradation performance than RGO or P25 individually.

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Low Temperature Synthesis of Nest-Like Microsphere with Exposed (001) Facets and Its Enhanced Photocatalytic Performance by NaOH Alkalization

Cited by 9 publications

References 43 publications

Preparation of Cu₂O@TiOF₂/TiO₂and its photocatalytic degradation of tetracycline hydrochloride wastewater

Preparation of Cu₂O@TiOF₂/TiO₂and its photocatalytic degradation of tetracycline hydrochloride wastewater

One-step synthesis of OH-TiO ₂ /TiOF ₂ nanohybrids and their enhanced solar light photocatalytic performance

Preparation of RGO-P25 Nanocomposites for the Photocatalytic Degradation of Ammonia in Livestock Farms

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Low Temperature Synthesis of Nest-Like Microsphere with Exposed (001) Facets and Its Enhanced Photocatalytic Performance by NaOH Alkalization

Cited by 9 publications

References 43 publications

Preparation of Cu2O@TiOF2/TiO2and its photocatalytic degradation of tetracycline hydrochloride wastewater

Preparation of Cu2O@TiOF2/TiO2and its photocatalytic degradation of tetracycline hydrochloride wastewater

One-step synthesis of OH-TiO 2 /TiOF 2 nanohybrids and their enhanced solar light photocatalytic performance

Preparation of RGO-P25 Nanocomposites for the Photocatalytic Degradation of Ammonia in Livestock Farms

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Preparation of Cu₂O@TiOF₂/TiO₂and its photocatalytic degradation of tetracycline hydrochloride wastewater

Preparation of Cu₂O@TiOF₂/TiO₂and its photocatalytic degradation of tetracycline hydrochloride wastewater

One-step synthesis of OH-TiO ₂ /TiOF ₂ nanohybrids and their enhanced solar light photocatalytic performance