Evaluation of electrocatalysis of hourglass-shaped polyoxometallates with different transition metals towards hydrogen peroxide transformed from superoxide radicals in living cell mitochondria

Geng, Chaoyao; Niu, Jiaqi; Zhao, Dan; Jin, Xiaoxin; Liu, Jiaojiao; Liu, Xiaoqiang; Wong, Danny K.Y.

doi:10.1016/j.cej.2023.146302

Cited by 5 publications

(1 citation statement)

References 51 publications

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“…Up to now, hourglass-type phosphomolybdate clusters {M[P 4 Mo V 6 O 31 ] 2 } n− (abbreviated as M{P 4 Mo 6 } 2 , where M represents metal ions), have drawn considerable interest in photocatalysis and electrochemical detection fields owing to their excellent redox capability and semiconductor-like optical property [31][32][33][34][35][36][37][38][39]. Especially, all the Mo atoms in the M{P 4 Mo 6 } 2 cluster are in the +5 oxidation state [40], which endows them with high reducibility and a wide spectral absorption range that can be extended to the visible and even infrared light regions [34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Reduced phosphomolybdate as photoassisted electrochemical crystalline sensor for trace Cr(VI) detection

Song,

Guo,

Wang

et al. 2024

Polyoxometalates

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The development of a sensitive and efficient detection technology for trace toxic hexavalent chromium (Cr(VI)) in water is a pressing concern. In this study, an hourglass-type phosphomolybdate-based metal-organic network with the formula [Na 0.5 Cu 5.5 (H 2 O) 2 (btmbp) 4 ] [Mn(H 2 O) 3 ] 2 {Mn[H 6 P 4 Mo 6 O 31 ] 2 }•10H 2 O (1, btmbp = 4,4'-bis((1H-1,2,4-triazol-1-yl)methyl)biphenyl) was hydrothermally synthesized. The crystal network consists of a ladder-like two-dimensional layered structure constructed by vertical connections of onedimensional (1D) [Na 0.5 Cu 5.5 (H 2 O) 2 (btmbp) 4 ] 6+ metal-organic chains and 1D inorganic polyanionic chains. Compound 1 exhibits excellent electrochemical property and a wide light absorption range including visible light to accelerate the electron transfer in redox processes. When serving as a photoassisted electrochemical (PAEC) sensor for trace Cr(VI) detection, compound 1 exhibits a high sensitivity of 330.5 μA•μM −1 and a low detection limit of 0.95 nM (98.79 ppt) along with high anti-interference ability and excellent PAEC detection stability, outperforming most reported polyoxometalate-based sensors and equaling noble-metal sensors, far satisfying World Health Organization standards for Cr(VI) concentration in drinking water. This work provides a new photoelectrochemical sensor material for monitoring environmental pollutants.

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Section: Introductionmentioning

confidence: 99%

Reduced phosphomolybdate as photoassisted electrochemical crystalline sensor for trace Cr(VI) detection

Song,

Guo,

Wang

et al. 2024

Polyoxometalates

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Recent Advances in Urea Electrocatalysis: Applications, Materials and Mechanisms^†

Zhang,

Chen,

Guo

et al. 2024

Chin. J. Chem.

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Comprehensive SummaryUrea plays a vital role in human society, which has various applications in organic synthesis, medicine, materials chemistry, and other fields. Conventional industrial urea production process is energy−intensive and environmentally damaging. Recently, electrosynthesis offers a greener alternative to efficient urea synthesis involving coupling CO2 and nitrogen sources at ambient conditions, which affords an achievable way for diminishing the energy consumption and CO2 emissions. Additionally, urea electrolysis, namely the electrocatalytic urea oxidation reaction (UOR), is another emerging approach very recently. When coupling with hydrogen evolution reaction, the UOR route potentially utilizes 93% less energy than water electrolysis. Although there have been many individual reviews discussing urea electrosynthesis and urea electrooxidation, there is a critical need for a comprehensive review on urea electrocatalysis. The review will serve as a valuable reference for the design of advanced electrocatalysts to enhance the electrochemical urea electrocatalysis performance. In the review, we present a thorough review on two aspects: the electrocatalytic urea synthesis and urea oxidation reaction. We summarize in turn the recently reported catalyst materials, multiple catalysis mechanisms and catalyst design principles for electrocatalytic urea synthesis and urea electrolysis. Finally, major challenges and opportunities are also proposed to inspire further development of urea electrocatalysis technology. Key ScientistsFor urea electrosynthesis, Furuya et al. firstly investigated the electrochemical coreduction of CO2 and NO3−/NO2− using gas‐diffusion electrodes in 1995. Then, Wang et al. effectively achieved C—N bond formation and urea synthesis on PdCu alloy nanoparticles in 2020. Shortly, Yan and Yu et al. proposed the formation of *CO2NO2 from *NO2 and *CO2 intermediates at early stage on In(OH)3 electrocatalyst in 2021, and employed defect engineering strategy to facilitate the *CO2NH2 protonation in 2022. Amal et al. Investigated the role that Cu‐N‐C coordination plays for both the CO2RR and NO3RR. After that, Zhang's group developed In‐based electrocatalysts with artificial frustrated Lewis pairs for urea, and they offered a systematic screening approach for catalyst design in urea electrosynthesis in 2023. And sargent et al. reported a strategy that increased selectivity to urea using a hybrid catalyst.For urea electrooxidation, Stevenson et al. investigated the effect of Sr substitution toward the urea oxidation reaction. Wang et al. provided insights into the urea electrooxidation process using a β‐Ni(OH)2 electrode and Qiao et al. elucidated a two‐stage reaction pathway for UOR in 2021.

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Rational Design of Co(II)‐Pyridine‐Decorated Reduced Phosphomolybdate Photocatalysts for Efficient Aniline Oxidation under Mild Conditions

Liu,

Li,

et al. 2024

Chin. J. Chem.

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Comprehensive SummaryThe conversion of aniline to nitrosobenzene (NSB), a key step in the synthesis of important chemicals, demands the development of environmentally friendly photocatalysts that operate under mild conditions. This process is driven by the need for sustainable methods, given toxic nature of aniline and its central role in the production of dyes, pharmaceuticals, and agricultural chemicals. This study reports on the synthesis of three reduced phosphomolybdate compounds with Co(II) centers and polypyridine ligands, which show great potential as photocatalysts for the mild oxidation of aniline to NSB. The synthesis uses 30% H2O2 as the oxidant and the compounds as the sole catalysts, achieving high conversion rates and selectivity without additional additives or photosensitizers. The integration of multidentate ligands with {P4Mo6} clusters significantly reduces the band gap, facilitating visible‐light‐driven photocatalysis. The adsorption interaction between coordinated water molecules and Co ions and H2O2 is found to enhance the conversion rate of aniline, a finding supported by DFT analyses.

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Evaluation of electrocatalysis of hourglass-shaped polyoxometallates with different transition metals towards hydrogen peroxide transformed from superoxide radicals in living cell mitochondria

Cited by 5 publications

References 51 publications

Reduced phosphomolybdate as photoassisted electrochemical crystalline sensor for trace Cr(VI) detection

Reduced phosphomolybdate as photoassisted electrochemical crystalline sensor for trace Cr(VI) detection

Recent Advances in Urea Electrocatalysis: Applications, Materials and Mechanisms^†

Rational Design of Co(II)‐Pyridine‐Decorated Reduced Phosphomolybdate Photocatalysts for Efficient Aniline Oxidation under Mild Conditions

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Evaluation of electrocatalysis of hourglass-shaped polyoxometallates with different transition metals towards hydrogen peroxide transformed from superoxide radicals in living cell mitochondria

Cited by 5 publications

References 51 publications

Reduced phosphomolybdate as photoassisted electrochemical crystalline sensor for trace Cr(VI) detection

Reduced phosphomolybdate as photoassisted electrochemical crystalline sensor for trace Cr(VI) detection

Recent Advances in Urea Electrocatalysis: Applications, Materials and Mechanisms†

Rational Design of Co(II)‐Pyridine‐Decorated Reduced Phosphomolybdate Photocatalysts for Efficient Aniline Oxidation under Mild Conditions

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Product

Resources

About

Recent Advances in Urea Electrocatalysis: Applications, Materials and Mechanisms^†