Communication—The Role of Ascorbic Acid Oxidation During Neural Stimulation

Olczak, Kaitlynn P.; Otto, Kevin J.

doi:10.1149/1945-7111/ac17b8

Cited by 4 publications

(3 citation statements)

References 21 publications

(23 reference statements)

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“…Under visible light irradiation, MOC-Q3 could receive the transferred electrons from the CB of EA-COF and use them to produce H 2 . On the other hand, the holes at the VB of EA-COF were effectively suppressed by AA because the redox potential of AA (0.47 V vs NHE) was lower than that at the VB edge of EA-COF …”

Section: Resultsmentioning

confidence: 99%

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A Direct Z-Scheme Single-Atom MOC/COF Piezo-Photocatalytic System for Overall Water Splitting

Liang,

Li,

Chen

et al. 2024

ACS Catal.

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Overall water splitting into H 2 and H 2 O 2 via Z-scheme piezo-photocatalytic systems is an ideal method for renewable energy production. Herein, we have synthesized a triangular prism-shaped metal−organic cage (MOC-Q3) integrating three catalytic Pd 2+ centers and two photosensitive ligands, which is successfully immobilized on a highly crystalline β-ketoenamine-linked covalent organic framework (EA-COF) to form a Zscheme single-atom photosystem. The optimized MOC-Q3/EA-COF achieves a high H 2 yield (26.17 mmol g −1 h −1 ) with a TON Pd of 118,521 with ascorbic acid as sacrificial agent due to broad light absorption, effective carrier separation, and widely distributed Pd active sites, which is among the highest for COF-based solar H 2 evolution photocatalysts. Interestingly, EA-COF is found to be a piezoelectric material and its piezoelectric performance is mainly due to the in-plane polarization of the 2,4,6-trihydroxybenzene-1,3,5-tricarbaldehyde groups in the COF, which is confirmed by experimental observations and density functional theory calculations. The EA-COF shows H 2 and H 2 O 2 production rates of 239.94 and 400.38 μmol g −1 h −1 , respectively, in pure water when excited by ultrasound coupled with light irradiation. The integration of MOC-Q3 can further enhance the efficiency of EA-COF in piezo-photocatalytic water splitting. The superior MOC-Q3/EA-COF exhibits H 2 and H 2 O 2 generation rates of 426.38 and 535.14 μmol g −1 h −1 , respectively, outperforming pure EA-COF by 1.8 and 1.3 times. This is a pioneering work to construct a Z-scheme MOC/COF piezo-photocatalytic system, which provides an efficient way to use mechanical and solar energy to produce H 2 and H 2 O 2 through overall water splitting.

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Section: Resultsmentioning

confidence: 99%

“…On the other hand, the holes at the VB of EA-COF were effectively suppressed by AA because the redox potential of AA (0.47 V vs NHE) was lower than that at the VB edge of EA-COF. 46 3.4. Piezo-Photocatalytic H 2 and H 2 O 2 Evolution of EA-COF and MOC-Q3/EA-COF.…”

Section: + +mentioning

confidence: 99%

A Direct Z-Scheme Single-Atom MOC/COF Piezo-Photocatalytic System for Overall Water Splitting

Liang,

Li,

Chen

et al. 2024

ACS Catal.

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“…The results indicated that the Z-scheme electron transfer from the CB of S-COF to the HOMO of MAC-FA1 was thermodynamically possible, and thus MAC-FA1 could also accept the transferred electrons and use them for H 2 production under visible light irradiation. In addition, the holes on S-COF were favorably quenched by AA because the redox potential of AA (0.47 V vs. NHE) [51] was more negative than the VB edge of S-COF. composite is displayed in Figure 4B, and the other boundary orbitals are shown in Figure S22.…”

Section: Mechanism Of Photocatalysismentioning

confidence: 99%

Hybridization of covalent organic frameworks and photosensitive metal‐organic rings: A new strategy for constructing supramolecular Z‐scheme heterostructures for ultrahigh photocatalytic hydrogen evolution

Li,

Liang,

Zhou

et al. 2023

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The rational design of Z‐scheme heterojunction photosystems based on covalent organic frameworks (COFs) is a promising strategy for harnessing solar energy for hydrogen conversion. Herein, a direct Z‐scheme single‐atom photocatalyst based on COF and metal‐organic ring has been constructed through the supramolecular interactions of coral‐like COF (S‐COF) and photosensitized Pd2L2 type metal‐organic ring (MAC‐FA1). The MAC‐FA1/S‐COF heterojunction exhibits good light absorption, efficient charge separation and transfer, slow electron‐hole recombination, and highly dispersed Pd active sites, enabling an efficient and stable H2 evolution reaction. The optimized 4% MAC‐FA1/S‐COF achieves an H2 evolution rate of 100 mmol g−1 h−1 within 5 h and obtains a total accumulated turn‐over number relative to Pd (TONPd) of 437,685 within 20 h, far superior to S‐COF, MAC‐FA1, M‐5/S‐COF, Pd/S‐COF, and M‐5/Pd/S‐COF, which is one of the highest records among COF‐based photocatalysts for solar‐driven H2 evolution. This is the first work to incorporate photosensitized metal‐organic rings/cages into porous crystalline COFs to form a supramolecular Z‐scheme heterojunction, which has significant potential as a high‐performance photocatalyst for solar‐driven H2 production.

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Non-Enzymatic Electrochemical Detection for Ascorbic Acid Based on Cu-BDC@AgNPs/FTO Electrode

Han,

Gao,

et al. 2024

J Inorg Organomet Polym

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Communication—The Role of Ascorbic Acid Oxidation During Neural Stimulation

Cited by 4 publications

References 21 publications

A Direct Z-Scheme Single-Atom MOC/COF Piezo-Photocatalytic System for Overall Water Splitting

A Direct Z-Scheme Single-Atom MOC/COF Piezo-Photocatalytic System for Overall Water Splitting

Hybridization of covalent organic frameworks and photosensitive metal‐organic rings: A new strategy for constructing supramolecular Z‐scheme heterostructures for ultrahigh photocatalytic hydrogen evolution

Non-Enzymatic Electrochemical Detection for Ascorbic Acid Based on Cu-BDC@AgNPs/FTO Electrode

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