Formation Mechanism of Polypyrrole-Coated Hollow Glass Microspheres (PPy@HGMs) Composite Powder DOI Open Access
Yao Du, Jianfeng Zhang, Ning Wang

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(22), P. 5595 - 5595

Published: Nov. 15, 2024

Coating conductive nanoparticles onto the surface of hollow glass microspheres (HGMs) is essential for broadening their applications. However, low density and high specific area HGM powders, along with thin walls cavity shells poor adhesion, pose challenges uniform attachment functional particles. In this study, we developed a novel integrated process that combines flotation, hydroxylation, amination pretreatment HGMs in situ polymerization to achieve coating polypyrrole (PPy) on HGMs. We explored corresponding growth mechanism. Our findings indicate amount coating, particle size, uniformity PPy are significantly influenced by time, as well microspheres/pyrrole feedstock ratio. The resulted encapsulation spherical PPy, average size PPy-coated (PPy@HGMs) increasing 14.60% compared original elemental nitrogen PPy@HGMs primarily exists form C-N N-H bonds. This study demonstrates groups engage chemical bonding interactions molecules. Mechanistic analysis reveals hydroxyl amino enriched pretreated serve activation centers, facilitating enrichment pyrrole monomers promoting chain conjugated through nucleophilic electrophilic subamino ring. Additionally, reaction between Lewis acid properties Lewis-type electron-donating KH550 fosters strong formation robust interface.

Language: Английский

Mineral-based electromagnetic wave absorbers and shields: Latest progress and perspectives DOI
Jiajun Zheng, Shi-Qing Mao, Shijie Zhang

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179884 - 179884

Published: March 1, 2025

Language: Английский

Citations

3
Progression from graphene and graphene oxide to high-performance epoxy resin-based composite DOI

Qiguo Hao,

Shuang Liu, Xiaomei Wang

et al.

Polymer Degradation and Stability, Journal Year: 2024, Volume and Issue: 223, P. 110731 - 110731

Published: March 6, 2024

Language: Английский

Citations

13
Exploring the efficacy and future potential of polypyrrole/metal oxide nanocomposites for electromagnetic interference shielding: a review DOI
Yuvika Sood, Harish Mudila, Pankaj Chamoli

et al.

Materials Horizons, Journal Year: 2024, Volume and Issue: 11(18), P. 4256 - 4274

Published: Jan. 1, 2024

Increase in emission of EM radiation due to electronic devices risks both equipment and human health which have been reduced by using cost effective, environmental stability, lightweight PPy-metal oxide nanocomposites for EMI shielding.

Language: Английский

Citations

12
Lightweight HfC nanowire-carbon fiber/graphene aerogel composites for high-efficiency electromagnetic interference shielding DOI
D. M. Jiang, Song Tian, Haojie Li

et al.

Carbon, Journal Year: 2024, Volume and Issue: 219, P. 118788 - 118788

Published: Jan. 5, 2024

Language: Английский

Citations

11
Ternary composites based next-generation supercapacitors electrode material: Emerging trends DOI Creative Commons

Esha Ghazanfar,

Hajira Zahoor,

Nasser S. Awwad

et al.

Electrochemistry Communications, Journal Year: 2025, Volume and Issue: unknown, P. 107893 - 107893

Published: Feb. 1, 2025

Language: Английский

Citations

1
Magnetite: Properties and applications – A review DOI

Rayanne de Jesus Andrade Fidelis,

Mariana Pires,

Domingos Sávio de Resende

et al.

Journal of Magnetism and Magnetic Materials, Journal Year: 2025, Volume and Issue: 614, P. 172770 - 172770

Published: Jan. 5, 2025

Language: Английский

Citations

0
Binder-Free Hexagonal Boron Nitride Nanosheets (BNNSs) as Protective Coatings for Copper, Steel, and Wood: A Review DOI Creative Commons
Muhammad Faheem Maqsood, Syed Muhammad Zain Mehdi,

Arslan Ashraf

et al.

Crystals, Journal Year: 2025, Volume and Issue: 15(1), P. 99 - 99

Published: Jan. 20, 2025

Hexagonal boron nitride (h-BN) has emerged as a promising dielectric material for protecting metallic substrates such copper and steel under ambient conditions. The layered structure of h-BN offers significant potential in preventing the oxidation corrosion these substrates. Due to their impermeability, nanosheets (BNNSs) do not form galvanic cell with underlying metals, enhancing effectiveness protective coatings. BNNSs are both thermally chemically stable, making them suitable coatings that protect against environmental degradation. Additionally, have demonstrated excellent fire resistance, hydrophobicity, resistance when applied wood, functioning binder-free, retardant coating remains effective up 900 °C air. This review focuses on anti-corrosion properties BNNSs, particularly substrates, discusses various methods application. article also future perspectives this field, including innovative concept wooden satellites designed short- long-term missions.

Language: Английский

Citations

0
Performance of graphene quantum dots reinforced nanocomposites for anticorrosion coatings and electromagnetic interference radiation shielding fields DOI
Ayesha Kausar, Esmaeal Ghavanloo

Elsevier eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 167 - 187

Published: Jan. 1, 2025

Language: Английский

Citations

0
Tailoring the synergistic effect of integrated polypyrrole hydrogel on the adsorption activity of rice husk-based activated carbon (polypyrrole/activated carbon composite) for bisphenol-A and 4-chlorophenol: experimental and theoretical analysis DOI Creative Commons

Amna M. Farhan,

Eman S. H. Khaled,

Ahmed Abdelkhalek

et al.

Frontiers in Bioengineering and Biotechnology, Journal Year: 2025, Volume and Issue: 13

Published: March 21, 2025

Rice husk-derived activated carbon was hybridized with polypyrrole hydrogel (Pyh), producing advanced nanocomposite (Pyh/AC). The composite applied as an enhanced adsorbent for two forms of toxic phenolic compounds, particularly bisphenol-A (BSP-A) and 4-chlorophenol (4-CL). adsorption studies were evaluated considering the synthetic effect Pyh based on criteria statistical physics equilibrium modeling. reported saturation capacities BSP-A 4-CL using Pyh/AC are 321.4 mg/g 365.8 mg/g, respectively. These values significantly higher than estimated in separated form. analysis steric properties validated about 169.7 119.5 active site density during uptake 4-CL, densities (110.5 99.3 (4-CL)), demonstrating positive impact hybridization process terms surface area, porosity, incorporated chemical functional groups. Furthermore, capacity each structure to accommodate up 3 molecules 6 displays operation multi-molecular mechanisms ordering these adsorbed vertically non-parallel forms. energies, either classic (<21 kJ/mol) or (<20 isotherm studies, reflect physisorption compounds Pyh/AC. also shows thermodynamically stable reactions that occurred exothermic, favorable, spontaneous properties.

Language: Английский

Citations

0
Unveiling the PEDOT-polypyrrole hybrid electrode for the electrochemical sensing of dopamine DOI Creative Commons
Anandhavelu Sanmugam,

C. Vanitha,

Abdulrahman I. Almansour

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 31, 2025

This study presents the electrochemical sensing of dopamine (DA) using an electrode polypyrrole/poly(3,4-ethylenedioxythiophene) (PEDOT-PPy) thin film. Electrochemical analyses PEDOT-PPy film for DA were conducted through cyclic voltammetry (CV) and differential pulse (DPV). The CV analysis demonstrated that exhibited superior activity towards due to its enhanced conductivity as a high-conducting polymer composite. DPV results indicated linear concentration level 5 nM 200 µM with minimal limit material. fabricated sensor explored sensitivity 7.27 µA/µM cm2 at 1000 diffusion coefficient 1.3 × 10–8 cm2/s. Additionally, material displayed excellent reproducibility, selectivity, stability. Therefore, composite shows potential outperforming other materials in detecting DA.

Language: Английский

Citations

0