Multifunctional natural rubber films fabricated via spray coating for enhanced energy harvesting and air filtration performance

IF 3.5 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Science Pub Date : 2025-05-08 DOI:10.1007/s10853-025-10907-5

Teerayut Prada, Walailak Kaeochana, Viyada Harnchana

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Abstract

The growing demand for sustainable energy and environmental remediation has led to the development of advanced materials with multifunctional capabilities. In this study, a spray coating process was employed to incorporate activated carbon (AC) nanoparticles onto natural rubber (NR) films, enhancing their performance as triboelectric layers in nanogenerators (TENGs) and as air filter membranes. The AC nanoparticles were dispersed in NR latex, forming a coating solution that modified the NR film surface. The effects of AC loading on the surface morphologies, TENG electrical output, dielectric properties and mechanical strength of the NR composites were investigated. The spray-coated AC-modified NR films (AC-NRF) exhibited improved surface roughness and charge-trapping properties, leading to a remarkable 225% enhancement in TENG output compared to pristine NR films, with a peak power density of 2.25 W m⁻² at an optimal AC concentration of 0.75%. Additionally, the AC-NRF films demonstrated improved mechanical strength and durability, with tensile strength increasing proportionally to AC content. Due to the high surface area and porosity of AC nanoparticles, the composite films were further applied in environmental applications, exhibiting the ability to filter particulate matters (PMs) including PM_2.5 and PM₁₀, as well as to adsorb CO₂ gas. These findings highlight the potential of AC-NRF composites as multifunctional materials for energy harvesting and air purification, offering scalable solutions for sustainable development.

Graphical abstract

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多功能天然橡胶薄膜通过喷涂制成，增强能量收集和空气过滤性能

对可持续能源和环境修复日益增长的需求导致了具有多功能能力的先进材料的发展。在这项研究中，采用喷涂工艺将活性炭（AC）纳米颗粒包裹在天然橡胶（NR）薄膜上，提高其作为纳米发电机（TENGs）摩擦电层和空气过滤膜的性能。将AC纳米粒子分散在NR胶乳中，形成涂覆液，对NR膜表面进行修饰。研究了交流载荷对NR复合材料表面形貌、TENG电输出、介电性能和机械强度的影响。喷涂的交流改性NR膜（AC- nrf）具有更好的表面粗糙度和电荷捕获性能，与原始NR膜相比，TENG输出显著提高225%，在最佳交流浓度为0.75%时，峰值功率密度为2.25 W m−2。此外，AC- nrf薄膜的机械强度和耐久性也有所提高，抗拉强度随AC含量的增加而成比例增加。由于AC纳米颗粒的高表面积和孔隙率，复合膜进一步应用于环境应用，表现出过滤包括PM2.5和PM10在内的颗粒物（pm）以及吸附CO2气体的能力。这些发现突出了AC-NRF复合材料作为能量收集和空气净化的多功能材料的潜力，为可持续发展提供了可扩展的解决方案。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Materials Science 工程技术-材料科学：综合

CiteScore

7.90

自引率

4.40%

发文量

1297

审稿时长

2.4 months

期刊介绍： The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.