Linker-induced hollow MOF embedded into arginine-modified montmorillonite for efficient urea removal: Adsorption behavior and mechanism analysis

Sun, Wang; Zha, Xiaoqian; Lu, Shun; Liu, Junyan; Sun, Guorong; Huang, Xiang; Wang, Yang

doi:10.1016/j.seppur.2024.128213

Cited by 5 publications

(1 citation statement)

References 72 publications

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“…Semiconductor photocatalysts possess remarkable potentiality to degrade these organic dyes in environmental remediation. − However, the recombination of photogenerated electrons and holes seriously hinders the efficiency of the photocatalyst. Ferroelectric materials with high spontaneous polarization can achieve superior separation of photoelectrons and holes through the built-in electric field induced by polarization (convert mechanical stress into electric energy), which are extensively employed as piezo-photocatalysts over the decomposition of organic pollutants in wastewater. − Therefore, the emerging piezo-photocatalysis, combining photocatalysis and piezocatalysis, is a promising advanced technology for remedying environmental pollution and has become one of the most active and scientific research topics over these years.…”

Section: Introductionmentioning

confidence: 99%

Band Gap Engineering and Lattice Distortion for Synergetic Tuning Optical Properties of NaNbO₃ toward Enhanced Piezo-photocatalytic Activity

Li,

Lu,

Cao

et al. 2024

Inorg. Chem.

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Section: Introductionmentioning

confidence: 99%

Band Gap Engineering and Lattice Distortion for Synergetic Tuning Optical Properties of NaNbO₃ toward Enhanced Piezo-photocatalytic Activity

Li,

Lu,

Cao

et al. 2024

Inorg. Chem.

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Energy‐saving hydrogen production by heteroatom modulations coupling urea electrooxidation

Lu,

Zheng,

Wang

et al. 2024

EcoMat

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Developing efficient electrocatalysts with low‐cost for the urea oxidation reaction (UOR) is a significant challenge in energy‐saving H2 production owing to its lower thermodynamic potential. Heteroatom incorporation strategy has been proven to boost electrocatalytic activity by altering electronic structures and revealing more active sites on catalysts. Herein, nickel hydroxide nanosheets with various vanadium incorporation (Vx‐Ni(OH)2) were developed through a facile hydrothermal approach. By optimizing the incorporated vanadium contents, V6‐Ni(OH)2 catalyst exhibited easily accessible active sites and enhanced charge transfer with structural advantages, then assembled as the working electrode for urea‐assisted H2 production. Consequently, V6‐Ni(OH)2 catalyst demonstrated superior UOR activity compared with other incorporated samples with an overpotential of 1.33 V and a Tafel slope of 28.3 mV dec−1. Theoretical calculations revealed that the improved UOR activity was attributed to the potential determining step of V‐Ni(OH)2, which exhibited lower energy in comparison with the pristine Ni(OH)2 and increased electronic states density near the Fermi level. Both experimental and theoretical calculations confirmed vanadium incorporation on Ni(OH)2 could modify the electronic structure of Ni(III) species, improving electrical conductivity, and optimizing the adsorption energy for key reaction intermediates. Furthermore, the crucial contribution of vanadium incorporation with optimized electronic structures to the high UOR activity of Ni(OH)2 is demonstrated.image

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Triphenylamine-Substituted Ni(II) Porphyrins for Urea Electro-oxidation

Lu,

Zheng,

Zeng

et al. 2024

Inorg. Chem.

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Porphyrin-based molecular catalysts possess a typical aromatic macrocyclic structure regarding their metal centers and coordination frameworks, allowing for the development of promising electrocatalysts through precise selection of the metal and porphyrin ligand. However, reports on metalloporphyrins as catalysts for the electrocatalytic urea oxidation reaction (UOR) remain scarce. With these considerations in mind, the triphenylamine-Ni(II) porphyrin (NiPor-TPA) was synthesized through the solvothermal approach from 5,10,15,20-tetrakis [4-(diphenylamino)phenyl]porphyrin and nickel(II) acetate in this work. Experimental results reveal that the introduction of Ni species can serve as active sites and activate urea oxidation efficiently, and thus the prepared catalysts deliver better electrocatalytic activity than the metal-free TPA. The NiPor-TPA electrode delivers the lowest potential of 1.34 V versus reversible hydrogen electrode (RHE) at 10 mA cm −2 for UOR with a Tafel slope of 44.6 mV dec −1 . This work proposes a new porphyrin-based molecular catalyst for effectively boosting electrocatalytic UOR activity. The πconjugated macroring structure and the excellent electrocatalytic properties both make NiPor-TPA one of the burgeoning electrocatalytic UORs.

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Linker-induced hollow MOF embedded into arginine-modified montmorillonite for efficient urea removal: Adsorption behavior and mechanism analysis

Cited by 5 publications

References 72 publications

Band Gap Engineering and Lattice Distortion for Synergetic Tuning Optical Properties of NaNbO₃ toward Enhanced Piezo-photocatalytic Activity

Band Gap Engineering and Lattice Distortion for Synergetic Tuning Optical Properties of NaNbO₃ toward Enhanced Piezo-photocatalytic Activity

Energy‐saving hydrogen production by heteroatom modulations coupling urea electrooxidation

Triphenylamine-Substituted Ni(II) Porphyrins for Urea Electro-oxidation

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Linker-induced hollow MOF embedded into arginine-modified montmorillonite for efficient urea removal: Adsorption behavior and mechanism analysis

Cited by 5 publications

References 72 publications

Band Gap Engineering and Lattice Distortion for Synergetic Tuning Optical Properties of NaNbO3 toward Enhanced Piezo-photocatalytic Activity

Band Gap Engineering and Lattice Distortion for Synergetic Tuning Optical Properties of NaNbO3 toward Enhanced Piezo-photocatalytic Activity

Energy‐saving hydrogen production by heteroatom modulations coupling urea electrooxidation

Triphenylamine-Substituted Ni(II) Porphyrins for Urea Electro-oxidation

Contact Info

Product

Resources

About

Band Gap Engineering and Lattice Distortion for Synergetic Tuning Optical Properties of NaNbO₃ toward Enhanced Piezo-photocatalytic Activity

Band Gap Engineering and Lattice Distortion for Synergetic Tuning Optical Properties of NaNbO₃ toward Enhanced Piezo-photocatalytic Activity