Nickel/Cobalt-Containing polypyrrole hydrogel-derived approach for efficient ORR electrocatalyst

Li, Huajing; Yin, Juanjuan; Meng, Yuting; Li, Shufeng; Jiao, Tifeng

doi:10.1016/j.colsurfa.2019.124221

Cited by 33 publications

(15 citation statements)

References 67 publications

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“…TG is a test used to study the thermal stability and composition of composite hydrogels. [22][23][24][25] In order to further study the thermal stability of composite hydrogels, 26 thermogravimetric analyses was used. As shown in Fig.…”

Section: Characterization Of Composite Hydrogelsmentioning

confidence: 99%

Self-assembled functional components-doped conductive polypyrrole composite hydrogels with enhanced electrochemical performances

et al. 2020

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Section: Characterization Of Composite Hydrogelsmentioning

confidence: 99%

Self-assembled functional components-doped conductive polypyrrole composite hydrogels with enhanced electrochemical performances

et al. 2020

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“…The N1s spectrum of PA66/PPy can be fitted into four peaks at 398.3 (pyrrolic nitrogen), 399.6 (amino nitrogen), 400.1 (amide nitrogen), and 400.2 eV (pyridinic nitrogen). [ 35 , 36 ] XRD analysis shows that the characteristic peaks of PA66 NFs appear at 20° and 24°, indicating the α phase of PA66 (Figure S9 , Supporting Information). [ 37 ] An obvious increment at 2 θ = 23° in PA66/PPy suggests the introduction of PPy.…”

Section: Resultsmentioning

confidence: 99%

Conformal Microfluidic‐Blow‐Spun 3D Photothermal Catalytic Spherical Evaporator for Omnidirectional Enhanced Solar Steam Generation and CO₂ Reduction

Líu

Gao

et al. 2021

Advanced Science

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Solar-driven water evaporation and valuable fuel generation is an environmentally friendly and sustainable way for clean water and energy production. However, a few bottlenecks for practical applications are high-cost, low productivity, and severe sunlight angle dependence. Herein, solar evaporation with enhanced photocatalytic capacity that is light direction insensitive and of efficiency breakthrough by virtue of a three-dimensional (3D) photothermal catalytic spherical isotopic evaporator is demonstrated. A homogeneous layer of microfluidic blow spun polyamide nanofibers loaded with efficient light absorber of polypyrrole nanoparticles conformally wraps onto a lightweight, thermal insulating plastic sphere, featuring favorable interfacial solar heating and efficient water transportation. The 3D spherical geometry not only guarantees the omnidirectional solar absorbance by the light-facing hemisphere, but also keeps the other hemisphere under shadow to harvest energy from the warmer environment. As a result, the light-to-vapor efficiency exceeds the theoretical limit, reaching 217% and 156% under 1 and 2 sun, respectively. Simultaneously, CO 2 photoreduction with generated steam reveals a favorable clean fuels production rate using photocatalytic spherical evaporator by secondary growth of Cu 2 O nanoparticles. Finally, an outdoor demonstration manifests a high evaporation rate and easy-to-perform construction on-site, providing a promising opportunity for efficient and decentralized water and clean fuel production.

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“…Moreover, the heterogeneous structure with nanometer size can reduce the charge diffusion length and effectively facilitate the separation process of charge carriers at the interface, which is also confirmed with the steady-state and transient fluorescence spectrum. In view of the above results, the presently prepared new heterojunction materials provide an exploration of new catalyst fields such as water oxidation and self-assembled composites [52][53][54][55][56][57][58][59][60][61][62][63].…”

Section: Resultsmentioning

confidence: 99%

In Situ Construction of Ag/TiO2/g-C3N4 Heterojunction Nanocomposite Based on Hierarchical Co-Assembly with Sustainable Hydrogen Evolution

et al. 2019

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The construction of heterojunctions provides a promising strategy to improve photocatalytic hydrogen evolution. However, how to fabricate a nanoscale TiO2/g-C3N4 heterostructure and hinder the aggregation of bulk g-C3N4 using simple methods remains a challenge. In this work, we use a simple in situ construction method to design a heterojunction model based on molecular self-assembly, which uses a small molecule matrix for self-integration, including coordination donors (AgNO3), inorganic titanium source (Ti(SO4)2) and g-C3N4 precursor (melamine). The self-assembled porous g-C3N4 nanotube can hamper carrier aggregation and it provides numerous catalytic active sites, mainly via the coordination of Ag+ ions. Meanwhile, the TiO2 NPs are easily mineralized on the nanotube template in dispersive distribution to form a heterostructure via an N–Ti bond of protonation, which contributes to shortening the interfacial carrier transport, resulting in enhanced electron-hole pairs separation. Originating from all of the above synergistic effects, the obtained Ag/TiO2/g-C3N4 heterogenous photocatalysts exhibit an enhanced H2 evolution rate with excellent sustainability 20.6-fold-over pure g-C3N4. Our report provides a feasible and simple strategy to fabricate a nanoscale heterojunction incorporating g-C3N4, and has great potential in environmental protection and water splitting.

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Nickel/Cobalt-Containing polypyrrole hydrogel-derived approach for efficient ORR electrocatalyst

Cited by 33 publications

References 67 publications

Self-assembled functional components-doped conductive polypyrrole composite hydrogels with enhanced electrochemical performances

Self-assembled functional components-doped conductive polypyrrole composite hydrogels with enhanced electrochemical performances

Conformal Microfluidic‐Blow‐Spun 3D Photothermal Catalytic Spherical Evaporator for Omnidirectional Enhanced Solar Steam Generation and CO₂ Reduction

In Situ Construction of Ag/TiO2/g-C3N4 Heterojunction Nanocomposite Based on Hierarchical Co-Assembly with Sustainable Hydrogen Evolution

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Nickel/Cobalt-Containing polypyrrole hydrogel-derived approach for efficient ORR electrocatalyst

Cited by 33 publications

References 67 publications

Self-assembled functional components-doped conductive polypyrrole composite hydrogels with enhanced electrochemical performances

Self-assembled functional components-doped conductive polypyrrole composite hydrogels with enhanced electrochemical performances

Conformal Microfluidic‐Blow‐Spun 3D Photothermal Catalytic Spherical Evaporator for Omnidirectional Enhanced Solar Steam Generation and CO2 Reduction

In Situ Construction of Ag/TiO2/g-C3N4 Heterojunction Nanocomposite Based on Hierarchical Co-Assembly with Sustainable Hydrogen Evolution

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Conformal Microfluidic‐Blow‐Spun 3D Photothermal Catalytic Spherical Evaporator for Omnidirectional Enhanced Solar Steam Generation and CO₂ Reduction