Two-dimensional TiO2 (001) nanosheets as an effective photo-assisted recyclable sensor for the electrochemical detection of bisphenol A

Hu, Sujuan; Yu, Yingjian; Guan, Yu; Li, Yanhuan; Wang, Baoling; Zhu, Mingshan

doi:10.1016/j.cclet.2020.08.021

Cited by 90 publications

(17 citation statements)

References 28 publications

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“…Furthermore, the measured EIS spectra are illustrated in Figure a, in which the Nyquist plots of g-C 3 N 4 -4AAP 15 exhibit a smaller arc radius than that of pure g-C 3 N 4 , suggesting its low interfacial resistance. Additionally, on the basis of the corresponding fitted equivalent circuit (inset of Figure a), the fitted charge transfer resistance ( R ct ) of g-C 3 N 4 -4AAP 15 (256 Ω) is lower compared to pure g-C 3 N 4 (11 648 Ω), further indicating its more efficient charge transfer capability Figure b presents polarization curves of samples, in which linear sweep voltammetry (LSV) plots display the operating overpotential of g-C 3 N 4 -4AAP 15 is only −0.85 V at 10 mA cm –2 , which is far lower than that of pure g-C 3 N 4 (−0.99 V).…”

Section: Resultsmentioning

confidence: 99%

Limbic Inducted and Delocalized Effects of Diazole in Carbon Nitride Skeleton for Propelling Photocatalytic Hydrogen Evolution

Dong

Zuo

Xiao

et al. 2021

ACS Appl. Mater. Interfaces

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Skeleton modification on carbon nitride (g-C3N4) via organic molecules is a recognized effective strategy to improve photocatalytic performance because it can powerfully improve charge separation in the skeleton plane. Herein, a diazole with a unique conjugated structure is bonded on edge of the g-C3N4 skeleton through a moderate polymerization of urea with 4-aminoantipyrine (4AAP). Meanwhile, the Pt nanoparticles selectively deposit on edge of the g-C3N4-4AAP15 nanosheet. It reveals that the robust limbic inducted and delocalized effects of diazole not only facilitate photogenerated electrons aggregation toward skeleton edge to promote in-plane carrier separation but also effectively stabilize and delocalize photogenerated electrons to improve carrier lifetime for propelling the photocatalytic hydrogen evolution (PHE) reaction. Specifically, the PHE rate over optimal g-C3N4-4AAP15 (284.2 μmol h–1) is 10 times that of pure g-C3N4 (27.6 μmol h–1) and the apparent quantum efficiency (AQE) at 420 nm reaches up to 24.2%. Through insights into the functionalized effect of small nitrogenous heterocycles introduced into the skeleton edge of g-C3N4, this work opens a new design thought for exploiting high-efficiency g-C3N4-based photocatalysts for photocatalytic application.

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Section: Resultsmentioning

confidence: 99%

Limbic Inducted and Delocalized Effects of Diazole in Carbon Nitride Skeleton for Propelling Photocatalytic Hydrogen Evolution

Dong

Zuo

Xiao

et al. 2021

ACS Appl. Mater. Interfaces

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“…Photoluminescence (PL) measurements were carried out to determine the charge recombination of synthesized nano composites (Figure S3b). [34] All the spectra consist of two emissions at 382 nm and 469 nm on excitation at 253 nm. The shorter wavelength at 382 nm can be allotted for the near band edge emission of ZnO band gap and the longer wavelength at 469 nm is defect related emission, [35,36] which can be attributed to the oxygen vacancy defect locating in ZnO surface.…”

Section: Characterizationmentioning

confidence: 99%

“…Figure 5a times greater than PZ01 electrode suggesting the more efficient interfacial charge transfer in the photo illuminated process. [34] The equilibrium potential of oxidation of CH 3 OH to CO 3 2À by regarding pH effect and potential shift between SCE and NHE in 1 M NaOH, E e value is calculated and set as À 1.0986 V. [30,47] The tafel plots of all synthesized electrodes in absence and presence of light are shown in Figures S4a and b. Tafel slope, intercept and equilibrium exchange current density of all prepared PZ composites are encapsulated in Table S3.…”

Section: Electro Catalytic and Photo-catalytic Activity Towards Meoh Oxidationmentioning

confidence: 99%

Synthesis of Different Pt‐ZnO Binary Composites for Synergistic Photo‐Electrocatalytic Oxidation of Methanol in Alkali

et al. 2021

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Various compositions of Pt-ZnO binary nano composites are synthesized as anode-catalyst for methanol oxidation reaction (MOR) in alkali under both presence and absence of visible light. Synthesized materials are characterised by various microscopic and spectroscopic techniques. The catalytic capabilities of synthesized anodes are evaluated by cyclic voltametry (CV), chronoamperometry (CA) and electro-chemical impedance spectroscopy (EIS). CV studies indicate that Pt-ZnO composite containing 0.6 wt % of Pt displays peak current density (in mAmg À 1 of Pt) 427.5 which is 14.84 times greater than that of composite containing 0.1 wt % Pt (28.80) in dark condition and under visible light, 0.4 wt % Pt and 0.6 wt % Pt exhibit 1.89 and 1.28 times greater activity in reference to MOR than that of dark. CA study reveals that 0.6 wt % Pt exhibits steady current density (20.91 mAmg À 1 of Pt) 209 times higher compared to that of composite having 0.1 wt % Pt (0.264 mAmg À 1 of Pt). The photocurrent response of 0.4 wt % Pt is found the best among the electrodes examined. The EIS data also reveal enhanced interfacial charge transfer in photo-irradiated electrodes. The HPLC and GCMS studies identify MOR products and help to draw the mechanisms.

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“…On one hand, enormous efforts have been made to modify TiO 2 to enhance its visible light absorption ability, including element doping, noble metal loading, combining TiO 2 with other semiconductors, and narrowing the bandgaps of TiO 2 . [12][13][14][15] On the other hand, great achievements have also been made in the exploitation of novel visible-light-driven photocatalysts. [16][17][18] Apart from the compound semiconductor photocatalysts, some simple materials (B, Si, P, S) are considered to be promising photocatalysts owing to their suitable band structure.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress on Metallic Bismuth‐Based Photocatalysts: Synthesis, Construction, and Application in Water Purification

Zhang

et al. 2021

Solar RRL

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Semiconductor photocatalysis technology is considered to be a promising technique to solve increasingly serious environmental pollution. Metallic bismuth (Bi)‐based photocatalysts have received much attention due to their extensive applications in environmental remediation because metallic Bi can function as a cocatalyst or a direct plasmonic photocatalyst to accelerate the photogenerated charge separation and thus improve their photocatalytic activity. In the last decade, enormous efforts have been made to seek excellent metallic Bi‐based photocatalysts as well as reveal the corresponding photocatalytic reaction mechanism for the degradation of organic pollutants in water. Herein, the unique electronic and optical properties and main synthesis methods of metallic Bi, as well as the detailed strategies and technology routes are timely summarized and discussed to enhance the photocatalytic activity of metallic Bi‐based photocatalysts in water purification. Finally, the future development and challenges of metallic Bi‐based photocatalysts are briefly discussed, summarized, and prospected.

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Two-dimensional TiO2 (001) nanosheets as an effective photo-assisted recyclable sensor for the electrochemical detection of bisphenol A

Cited by 90 publications

References 28 publications

Limbic Inducted and Delocalized Effects of Diazole in Carbon Nitride Skeleton for Propelling Photocatalytic Hydrogen Evolution

Limbic Inducted and Delocalized Effects of Diazole in Carbon Nitride Skeleton for Propelling Photocatalytic Hydrogen Evolution

Synthesis of Different Pt‐ZnO Binary Composites for Synergistic Photo‐Electrocatalytic Oxidation of Methanol in Alkali

Recent Progress on Metallic Bismuth‐Based Photocatalysts: Synthesis, Construction, and Application in Water Purification

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