Surface modification of TiO2 by a ruthenium(II) polypyridyl complex via silyl-linkage for the sensitized photocatalytic degradation of carbon tetrachloride by visible irradiation

Fung, Annie K.M.; Chiu, Brenda K.W; Lam, Michael

doi:10.1016/s0043-1354(02)00567-5

Cited by 58 publications

(22 citation statements)

References 32 publications

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“…[51] Surface modificationsw ith nonpolarc ompounds resultsi n preferential rejection of dissolved polar compounds, the reaction rate of which is strongly reduced. Conventional anchoring groups are silyl, carboxy, and phosphonato groupsa nd sulfur and nitrogen bridges.…”

Section: Influence On Conversion and Selectivitymentioning

confidence: 99%

“…Among them, the silyl group is reported as the most stable surface-modification moiety,w hereas dissociation or dechelation is reportedt oac ertain extent for the other groups. [51] Surface modificationsw ith nonpolarc ompounds resultsi n preferential rejection of dissolved polar compounds, the reaction rate of which is strongly reduced. On the other hand, nonpolar compounds can be selectively degraded.…”

Section: Influence On Conversion and Selectivitymentioning

confidence: 99%

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Influence of Surface‐Related Phenomena on Mechanism, Selectivity, and Conversion of TiO₂‐Induced Photocatalytic Reactions

2018

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Heterogeneous photocatalysis is the result of an inextricable connection of several factors differently contributing to the overall process. Photon absorption is the “sine qua non” condition for the reaction to occur. In fact, photons can be considered as immaterial reactants, and all of the phenomena related to the interaction of light–matter play a prominent role. However, other factors contribute in a concerted way to address the reaction, so that the relative contribution of each of them is often difficult to evaluate. In this framework, the present paper highlights some aspects of the interaction of TiO2 surface‐adsorbate species that could be underestimated and their influence on the conversion, selectivity, and mechanisms of photocatalytic reactions. To this aim, some paradigmatic examples on the adsorption of water and organics on TiO2 are reported.

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Section: Influence On Conversion and Selectivitymentioning

confidence: 99%

Section: Influence On Conversion and Selectivitymentioning

confidence: 99%

Influence of Surface‐Related Phenomena on Mechanism, Selectivity, and Conversion of TiO₂‐Induced Photocatalytic Reactions

2018

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“…Kebelakangan ini, penggunaan fotomangkin kompleks berasaskan kompleks logam berdasarkan logam Ru(II) yang peka kepada cahaya nampak menjadi pilihan untuk meningkatkan jumlah elektron teruja untuk aktiviti fotopemangkinan (Boyer et al 2016;Fung et al 2003;He et al 2016;Mahon et al 2017;Tan et al 2014). Kompleks Ru(II) mempunyai ciri elektrokimia yang baik contohnya memiliki sifat redoks berbalik dan stabil (Eskelinen et al 2000;Rozenel et al 2017).…”

Section: Pengenalanunclassified

Sintesis, Pencirian Spektroskopi dan Sifat Fotomangkin Rutenium(II) Bis(bipiridil)- 2-(1H-pirazol-3-il)piridi

Mark-Lee¹,

Ng²,

Minggu³

et al. 2017

JSM

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ABSTRAKKompleks Ru (II), [Ru(bpy) 2 (pypzH)] (PF 6 ) 2 dengan bpy = 2,2'-bipiridil dan pypzH= 2-(1H-pirazol-3-il) DFT Complexes [Ru(bpy) 2 (pypzH)](PF 6 ) 2 where bpy = 2,2'-bipyridyl and pypzH= 2-(1H-pyrazol-3-yl)piridine was synthesised and characterised with spectroscopic techniques including Fourier transform infrared (FTIR), UV-visible (UV-Vis) and nuclear magnetic resonance (NMR) and mass spectrometry. Density functional theory (DFT) and time-dependent (TD)

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“…Despite the attractive features of the photosensitization the ability to mediate degradation of non-visible absorbing substrates, report on successful photosensitized photocatalytic system is scarce. It is probably due to the general difficulty in establishing stable surface anchorage of the charge-transfer photosensitizers [5] and degrading dyes on TiO 2 from low wavelength irradiation. Therefore, the development of efficient visible-light systems, for example, blue, white and red LEDs (BLED, WLED, RLED) and low intensity ultraviolet LED (UVLED) that can avoid degradation of dye on photocatalysts and enhance the complete degradation of pollutants have been an urgent issue.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Decomposition of Indoor Air Pollution Using Dye-Sensitized TiO2 Induced by Anthocyanin and Ru Complexes

Lee¹,

Shie²,

Tsai³

et al. 2013

JOCET

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Abstract-This study investigated the characteristics of dye-sensitized TiO 2 (DST) using dyes of anthocyanin and Ru complexes, including nature dyes (raspberry, blueberry, cranberry) and artificial dyes (N3 (RuL 2 (NCS) 2 •2H 2 O), N719(C 58 H 86 O 8 N 8 S 2 Ru)), prepared by precipitation method following by calcined at muffle furnace and discussed the feasibility of the applications of DST in the removal of volatile organic compounds (VOCs) from the indoor pollution sources using blue, white, red and ultra-violet light emitting diode. UV/Vis absorption spectra, High-resolution scan electron microscopy, Elemental analyses and BET surface area were performed for the characteristic analysis. The results showed that the diluted concentration of dyes affected the decomposition efficiencies (η). In the case of diluted solution of 30 times raw raspberry juice, η was more than 80% and it was higher than that of commercial TiO 2 . For N3 and N719-sensitized TiO 2 , their values of η were all in the order of UVLED> BLED> WLED> RLED. Under RLED irradiation, the removal mass of N719DST was 11 times of that of TiO 2 , showing the optimal special effect on light wavelength. With the irradiation of UVLED, its η increased to 95% with the maximum removal mass of 720 mg/g. Visible light intensity for the photocatalytic reaction is still the major factor.

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Surface modification of TiO2 by a ruthenium(II) polypyridyl complex via silyl-linkage for the sensitized photocatalytic degradation of carbon tetrachloride by visible irradiation

Cited by 58 publications

References 32 publications

Influence of Surface‐Related Phenomena on Mechanism, Selectivity, and Conversion of TiO₂‐Induced Photocatalytic Reactions

Influence of Surface‐Related Phenomena on Mechanism, Selectivity, and Conversion of TiO₂‐Induced Photocatalytic Reactions

Sintesis, Pencirian Spektroskopi dan Sifat Fotomangkin Rutenium(II) Bis(bipiridil)- 2-(1H-pirazol-3-il)piridi

Photocatalytic Decomposition of Indoor Air Pollution Using Dye-Sensitized TiO2 Induced by Anthocyanin and Ru Complexes

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Surface modification of TiO2 by a ruthenium(II) polypyridyl complex via silyl-linkage for the sensitized photocatalytic degradation of carbon tetrachloride by visible irradiation

Cited by 58 publications

References 32 publications

Influence of Surface‐Related Phenomena on Mechanism, Selectivity, and Conversion of TiO2‐Induced Photocatalytic Reactions

Influence of Surface‐Related Phenomena on Mechanism, Selectivity, and Conversion of TiO2‐Induced Photocatalytic Reactions

Sintesis, Pencirian Spektroskopi dan Sifat Fotomangkin Rutenium(II) Bis(bipiridil)- 2-(1H-pirazol-3-il)piridi

Photocatalytic Decomposition of Indoor Air Pollution Using Dye-Sensitized TiO2 Induced by Anthocyanin and Ru Complexes

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Influence of Surface‐Related Phenomena on Mechanism, Selectivity, and Conversion of TiO₂‐Induced Photocatalytic Reactions

Influence of Surface‐Related Phenomena on Mechanism, Selectivity, and Conversion of TiO₂‐Induced Photocatalytic Reactions