Pyrolyzed cobalt porphyrin-modified carbon nanomaterial as an active catalyst for electrocatalytic water oxidation

Sun, Zijun; Li, Jingshi; Zheng, Huafei; Liu, Xiang; Ye, Sheng; Du, Pingwu

doi:10.1016/j.ijhydene.2015.03.103

Cited by 47 publications

(15 citation statements)

References 71 publications

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“…12,13 Porphyrins act as multifaceted ligands coordinating with various metals to form metalloporphyrins that have many applications. [14][15][16] Porphyrins have additionally been found to possess remarkable properties in the elds of solar energy, 17 medicine, 18 sensing, 19 catalysis, 20 non-linear optics and the like. 21 In living systems also, porphyrins perform many vital functions like oxygen transport and storage, photosynthesis, electron transfer and as cofactors to many enzymes.…”

Section: Introductionmentioning

confidence: 99%

Vanadyl β-tetrabromoporphyrin: synthesis, crystal structure and its use as an efficient and selective catalyst for olefin epoxidation in aqueous medium

et al. 2019

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Section: Introductionmentioning

confidence: 99%

Vanadyl β-tetrabromoporphyrin: synthesis, crystal structure and its use as an efficient and selective catalyst for olefin epoxidation in aqueous medium

et al. 2019

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“…Clear changes can be also observed in the N1s region recorded for the MIX_TC_APTES@glass sample ( Figure 3 b)—two components can be distinguished, located at 398.8 and 400.7 eV, that can be assigned to –NH 2 /N-pyridinic ring and –NH–CO–/N-pyrrolic ring, respectively. The first one is present in the phenothiazine structure, i.e., AA photosensitizer, while the second one is found in porphyrin, APTPP [ 39 , 40 ], which together confirms the efficacy of the third step of the applied procedure of the mixed monolayer formation. Additionally, further proof of the attachment of the AA photosensitizer to the glassy surface is the presence of the S2p line in XPS spectrum of MIX_TC_APTES@glass.…”

Section: Resultsmentioning

confidence: 77%

Covalent Immobilization of Organic Photosensitizers on the Glass Surface: Toward the Formation of the Light-Activated Antimicrobial Nanocoating

et al. 2021

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Two highly efficient commercial organic photosensitizers—azure A (AA) and 5-(4-aminophenyl)-10,15,20-(triphenyl)porphyrin (APTPP)—were covalently attached to the glass surface to form a photoactive monolayer. The proposed straightforward strategy consists of three steps, i.e., the initial chemical grafting of 3-aminopropyltriethoxysilane (APTES) followed by two chemical postmodification steps. The chemical structure of the resulting mixed monolayer (MIX_TC_APTES@glass) was widely characterized by X-ray photoelectron (XPS) and Raman spectroscopies, while its photoactive properties were investigated in situ by UV–Vis spectroscopy with α-terpinene as a chemical trap. It was shown that both photosensitizers retain their activity toward light-activated generation of reactive oxygen species (ROS) after immobilization on the glassy surface and that the resulting nanolayer shows high stability. Thanks to the complementarity of the spectral properties of AA and APTPP, the effectiveness of the ROS photogeneration under broadband illumination can be optimized. The reported light-activated nanocoating demonstrated promising antimicrobial activity toward Escherichia coli (E. coli), by reducing the number of adhered bacteria compared to the unmodified glass surface.

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“…The clean GaOOH sample contained two peaks in the N 1s spectra residing at 397.3 and 394.3 eV which were due to unreacted N and Ga LMM Auger peak. Fitting of the N 1s XPS data is especially useful for investigating the presence of pyrrolic nitrogens contained in porphyrin molecules (Sun et al, ). Peaks centered around 399 and 402 eV provided evidence of the presence of TTP‐PO 3 in the in situ and ex situ GaOOH/TTP‐PO 3 .…”

Section: Resultsmentioning

confidence: 99%

In situ and ex situ functionalization of nanostructured gallium oxy‐hydroxide with a porphyrin dye

Pearce¹,

Berg²,

Rahn³

et al. 2016

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The surface attachment of a porphyrin dye to nanocrystalline GaOOH was performed using two routes of solution-based functionalization. The first method of functionalization utilized an in situ incorporation of dissolved porphyrin salt in solution during the microwave synthesis step. Additionally, synthesized GaOOH nanorods were mixed in porphyrin solution after the microwave process to make an ex situ GaOOH/TTP-PO- . X-ray photoelectron spectroscopy confirmed the presence of expected surface species and provided evidence of increased surface coverage of TTP-PO on GaOOH in the ex situ- GaOOH/TTP-PO as compared to the in situ one. Size and morphology changes were investigated using SEM and, along with analysis of XRD, the in situ samples showed larger crystallite sizes. This was confirmed with PL due to the higher bandgap energy evident in the ex situ GaOOH/TTP-PO compared to the in situ sample. A stability study was performed using fluorescence spectroscopy which indicated no leaching of porphyrin from the in situ GaOOH/TTP-PO . However, porphyrin leaching was evident from the ex situ GaOOH/TTP-PO sample. The stability of the in situ GaOOH/TTP-PO makes it attractive for a number of interfacial applications. SCANNING 38:671-683, 2016. © 2016 Wiley Periodicals, Inc.

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Pyrolyzed cobalt porphyrin-modified carbon nanomaterial as an active catalyst for electrocatalytic water oxidation

Cited by 47 publications

References 71 publications

Vanadyl β-tetrabromoporphyrin: synthesis, crystal structure and its use as an efficient and selective catalyst for olefin epoxidation in aqueous medium

Vanadyl β-tetrabromoporphyrin: synthesis, crystal structure and its use as an efficient and selective catalyst for olefin epoxidation in aqueous medium

Covalent Immobilization of Organic Photosensitizers on the Glass Surface: Toward the Formation of the Light-Activated Antimicrobial Nanocoating

In situ and ex situ functionalization of nanostructured gallium oxy‐hydroxide with a porphyrin dye

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