Visible-light-responsive sulfated vanadium-doped TS-1 with hollow structure: Enhanced photocatalytic activity in selective oxidation of cyclohexane

Zhong, Wenzhou; Qiao, Tao; Dai, Jiangdong; Mao, Liang; Xu, Qiong; Zou, Gouqiang; Liu, Xianxiang; Yin, Dulin; Zhao, Fiping

doi:10.1016/j.jcat.2015.06.013

Cited by 77 publications

(35 citation statements)

References 62 publications

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“…The holes in the valence band react with tunnel water molecules to produce hydroxyl radicals; a reaction occurs between an activated hydroxyl group and cyclohexane, yielding water and an adsorbed cyclohexyl radical. In agreement with the explanation of Zhong et al [29], who correlated the photo-oxidation reaction mechanism on V-doped titanium silicate (TS-1) via hydroxyl radicals and superoxide radicals O 2 .…”

Section: The Mechanism Studysupporting

confidence: 91%

Photo-catalytic selective organic transformations by Fe-doped octahedral molecular sieves (manganese oxide) nano-structure

Said

El-Maghrabi

Riad

et al. 2018

Journal of Asian Ceramic Societies

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Section: The Mechanism Studysupporting

confidence: 91%

Photo-catalytic selective organic transformations by Fe-doped octahedral molecular sieves (manganese oxide) nano-structure

Said

El-Maghrabi

Riad

et al. 2018

Journal of Asian Ceramic Societies

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“…8, it can be seen that the nitrogen adsorption-desorption isotherm of CdIn 2 S 4 photocatalyst exhibits type IV with a typical H3 hysteresis loop according to the IUPAC classification, implying that the samples have mesoporous structures 36 . It is known that the typical H3 loop is derived from aggregation of plate-like particles into slit-shaped pores.…”

Section: Resultsmentioning

confidence: 98%

Solvothermal synthesis of CdIn2S4 photocatalyst for selective photosynthesis of organic aromatic compounds under visible light

Ling

Zhang

et al. 2017

Sci Rep

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Ternary chalcogenide semiconductor, cadmium indium sulfide (CdIn 2 S 4 ), was prepared by a simple solvothermal method using ethylene glycol as a solvent, as well as indium chloride tetrahydrate (InCl 3 . 4H 2 O), cadmium nitrate tetrahydrate [Cd(NO 3 ) 2 . 4H 2 O], and thiacetamide (TAA) as precursors. The resulted sample was subject to a series of characterizations. It is the first time to use CdIn 2 S 4 sample as a visible light-driven photocatalyst for simultaneous selective redox transformation of organic aromatic compounds. The results indicate that the as-synthesized CdIn 2 S 4 photocatalyst not only has excellent photocatalytic performance compared with pure In 2 S 3 and CdS for the selective oxidation of aromatic alcohols in an oxygen environment, but also shows high photocatalytic redox activities under nitrogen atmosphere. A possible mechanism for the photocatalytic redox reaction in the coupled system was proposed. It is hoped that our current work could extend the applications of CdIn 2 S 4 photocatalyst and provide new insights for selective transformations of organic compounds.The photocatalytic technology has attracted much attention for the scholars of different fields since Fujishima and Honda found that TiO 2 as electrode can decompose water to produce hydrogen and oxygen in 1972 1 . With the development of photocatalytic technology, current research work mainly focuses on the degradation of organic pollutants 2-4 , hydrogen production in water 5 , reduction of carbon dioxide 6 , selective oxidation of different alcohols 7 , and other kinds of organic transformation reactions [8][9][10] . Among them, selective oxidation of alcohols to corresponding aldehydes without further oxidation to carboxylic acids and carbon dioxide has become a research hotspot recently 11,12 . This is because that the selective oxidation of aromatic alcohols into corresponding aldehydes is one of the most fundamental reactions in organic synthesis and fine chemical industry 13 . Traditional oxidants and reductants, such as KMnO 4 , ClO − , Fe, and Pt used in the redox process generally have toxicity, corrosivity, or preciousness. Additionally, these reaction systems are not only quite complicated, but also produce a lot of wastes. Therefore, one of the challenges as well as opportunities faced by the researchers is to develop a high-efficienct and environmental friendly method for selective organic transformations under mild conditions 14 .It has been reported that semiconductor photocatalysts can be applied in the selective oxidation of alcohols to aldehydes rather than CO 2 and H 2 O in the final products 15 . For example, Xu's group reported that CdS was introduced as an efficient visible light photocatalyst for selective oxidation of saturated primary C-H bonds under ambient conditions 16 . Panda's group found efficient photocatalytic selective nitro-reduction and C-H bond oxidation over ultrathin sheet mediated CdS flowers 17 . Wang and his coworkers reported molecular and textural engineering of conjugated carbon...

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“…The gentle uptake at P/P0 < 0.05, and almost no adsorption at intermediate relative pressures, suggested the presence of micropores. The existence of a hysteresis loop at P/P0 > 0.9 could be attributed to the interparticle adsorption within the voids formed between the catalyst particles, which indicated that the samples consisted of both microporous and mesoporous channels [19,42,63]. The commercial TS-1 showed a type-I isotherm, typical of microporous material, and the hysteresis loops in the nitrogen isotherm indicated the existence of minority mesopores [38,64,65].…”

Section: N 2 Adsorption-desorption Isotherms and Pore Size Distributimentioning

confidence: 96%

Direct Hydroxylation of Benzene to Phenol over TS-1 Catalysts

et al. 2018

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We synthesized a TS-1 catalyst to directly hydroxylate benzene to phenol with H 2 O 2 as oxidant and water as solvent. The samples were characterized by FT-IR (Fourier Transform Infrared), DR UV-Vis (Diffused Reflectance Ultraviolet Visible), XRD (X-ray diffraction), SEM(scanning electron microscope), TEM (Transmission Electron Microscope), XPS (X-ray photoelectron spectroscopy), ICP (inductively coupled plasma spectrum), and N 2 adsorption-desorption. A desirable phenol yield of 39% with 72% selectivity was obtained under optimized conditions: 0.15 g (0.34 to the mass of benzene) TS-1, 5.6 mmol C 6 H 6 , reaction time 45 min, 0.80 mL H 2 O 2 (30%), 40.0 mL H 2 O, and reaction temperature 70 • C. The reuse of the TS-1 catalyst illustrated that the catalyst had a slight loss of activity resulting from slight Ti leaching from the first run and then kept stable. Almost all of the Ti species added in the preparation were successfully incorporated into the TS-1 framework, which were responsible for the good catalytic activity. Extraframework Ti species were not selective for hydroxylation.

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Visible-light-responsive sulfated vanadium-doped TS-1 with hollow structure: Enhanced photocatalytic activity in selective oxidation of cyclohexane

Cited by 77 publications

References 62 publications

Photo-catalytic selective organic transformations by Fe-doped octahedral molecular sieves (manganese oxide) nano-structure

Photo-catalytic selective organic transformations by Fe-doped octahedral molecular sieves (manganese oxide) nano-structure

Solvothermal synthesis of CdIn2S4 photocatalyst for selective photosynthesis of organic aromatic compounds under visible light

Direct Hydroxylation of Benzene to Phenol over TS-1 Catalysts

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