Photodegradation of environmental pollutants using perylene adsorbed on silica gel as a visible-light photocatalyst

Moriwaki, Hiroshi; Akaishi, Yasutaka; Akamine, Michiya; Usami, Hisanao

doi:10.1016/j.apcatb.2016.11.056

Cited by 17 publications

(2 citation statements)

References 23 publications

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“…Furthermore, it has no absorbance and no shading effect. So, SiO 2 hydrogel is an excellent candidate for developing a photocatalyst with a network structure [24,25]. In this work, we combined CdS NRs with polyaniline and loaded the binary complex on SiO 2 gel to obtain a composite (CdS NRs-PANI-SiO 2 ) with a micro network structure.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Structure of PANI/CdS NRs-SiO2 Hydrogel for Photocatalytic Hydrogen Evolution with High Activity and Stability

Zhang

Gao

et al. 2019

Nanomaterials

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Three-dimensional PANI/CdSNRs-SiO2 hydrogel (CdS NRs-PANI-SiO2) was synthesized by loading polyaniline (PANI) onto the semiconductor CdS nanorods (NRs) surface and loading the binary complex on SiO2 gel. The structure, optical properties, and electrochemical properties of the composite were studied in detail. The hydrogen production amount of CdS NRs-PANI (3%)-SiO2 (20%) increased in comparison with CdS NRs and reached 43.25 mmol/g in 3 h under visible light. The three-dimensional structure of SiO2 hydrogel increased the specific surface area of the catalyst, which was conducive to exposing more active sites of the catalyst. In addition, the conductive polymer PANI coated on CdS NRs played the role of conductive charge and effectively inhibited the photo-corrosion of CdS NRs. In addition, the recovery experiment showed that the recovery rate of the composite catalyst reached 90% and hydrogen production efficiency remained unchanged after five cycles, indicating that the composite catalyst had excellent stability.

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Section: Introductionmentioning

confidence: 99%

Three-Dimensional Structure of PANI/CdS NRs-SiO2 Hydrogel for Photocatalytic Hydrogen Evolution with High Activity and Stability

Zhang

Gao

et al. 2019

Nanomaterials

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“…Furthermore, photodegradation is a promising approach to degrade organochlorine pollutants [39], in which Cl-KIEs may also take place and thereby influence the chlorine isotope ratios and isotopologue distributions of original and product organochlorines.…”

Section: Implications To Environmental and Atmospheric Chemistrymentioning

confidence: 99%

Energy‐dependent normal and unusually large inverse chlorine kinetic isotope effects of simple chlorohydrocarbons in collision‐induced dissociation by gas chromatography‐electron ionization‐tandem mass spectrometry

et al. 2020

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Kinetic isotope effects (KIEs) taking place in mass spectrometry (MS) can provide indepth insights into the fragmental behaviors of compounds in MS. Yet the mechanisms of KIEs in collision-induced dissociation (CID) in tandem MS are unclear, and information about chlorine KIEs (Cl-KIEs) of organochlorines in MS is particularly scarce. This study investigated the Cl-KIEs of dichloromethane, trichloroethylene and tetrachloroethylene during CID using gas chromatography-electron ionization triplequadrupole tandem MS. Cl-KIEs were measured with MS signal intensities, and their validity was confirmed in terms of chromatograms, crosstalk effects and background subtraction influences. All the organochlorines presented large inverse Cl-KIEs, showing the largest values of 0.492, 0.910 and 0.892 at the highest collision energy for dichloromethane, trichloroethylene and tetrachloroethylene, respectively. For dichloromethane, both intra-ion and inter-ion Cl-KIEs were studied, within the ranges of 0.492-1.020 and 0.614-1.026, respectively, showing both normal and inverse Cl-KIEs depending on collision energies. The observed Cl-KIEs generally declined with the increasing collision energies from 0-60 eV, but were inferred to be independent of MS signal intensities. The normal Cl-KIEs were explained with the quasi-equilibrium theory and zero point energy theory, and the inverse Cl-KIEs were interpreted with isotope-competitive reactions relevant to transition state theory. The Cl-KIEs are dominated by critical energies at low internal energies, while controlled by rotational barriers (or looseness/tightness of transition states) at high internal energies. It is concluded that the Cl-KIEs may depend on critical energies, bond strengths, available internal energies, and transition state looseness/tightness. The findings of this study yield new insights into the fundamentals of Cl-KIEs of organochlorines during CID, Page 3 and may be conducive to elucidating the mechanisms of KIEs in collision-induced and photo-induced reactions in the actual world.

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Nd3+-doped β-Bi2O3/Bi2O2CO3 composite nanoplates fabricated via phase transformation and their superior visible light photocatalytic performance for removing phenols and dyes

Liu

Fan

et al. 2021

J Nanopart Res

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Photodegradation of environmental pollutants using perylene adsorbed on silica gel as a visible-light photocatalyst

Cited by 17 publications

References 23 publications

Three-Dimensional Structure of PANI/CdS NRs-SiO2 Hydrogel for Photocatalytic Hydrogen Evolution with High Activity and Stability

Three-Dimensional Structure of PANI/CdS NRs-SiO2 Hydrogel for Photocatalytic Hydrogen Evolution with High Activity and Stability

Energy‐dependent normal and unusually large inverse chlorine kinetic isotope effects of simple chlorohydrocarbons in collision‐induced dissociation by gas chromatography‐electron ionization‐tandem mass spectrometry

Nd3+-doped β-Bi2O3/Bi2O2CO3 composite nanoplates fabricated via phase transformation and their superior visible light photocatalytic performance for removing phenols and dyes

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