Issue 42, 2023

An ultrafine spider-like carbon nanonet for high performance air filters, health monitoring sensors, and green energy generators

Abstract

We report an innovative approach for fabricating a gradient dual nanonet (NF@CNT) consisting of poly(vinyl alcohol-co-ethylene) (PVA-co-PE) nanofibers with a diameter of 0.68 ± 0.15 μm and ultrafine spider-like nanonets with a diameter of 23.30 ± 6.67 nm. The spider-like nanonet formation mechanism is probably due to the hydrogen bonding interactions between single wall carbon nanotubes (SWCNTs) and PVA-co-PE nanofibers or between SWCNTs. The NF@CNT-2 air filter exhibits a relatively high water vapor transmission rate (WVTR) of 4732.63 ± 626.28 g (m2 d)−1, a high filtration efficiency of 95.62 ± 0.52%, and a low pressure drop of 105.33 ± 1.53 Pa. Additionally, it can be assembled as a resistance sensor to detect human motion, such as finger bending and releasing, as well as physiological signals including wrist pulse rate (66 times per min), vocal recognition, and respiration rate (normal 16 times per min, after exercise 55–56 times per min). Furthermore, it can also be reused as a transpiration driven electrokinetic power generator (TEPG), with a size of 66 mm × 10 mm providing a maximum open circuit voltage (Voc) of 0.57 V by dripping 85 μL of 0.1 M ferric chloride solution, and six units serially can power a red LED and a calculator, respectively.

Graphical abstract: An ultrafine spider-like carbon nanonet for high performance air filters, health monitoring sensors, and green energy generators

Supplementary files

Article information

Article type
Paper
Submitted
22 Aug 2023
Accepted
02 Oct 2023
First published
18 Oct 2023

J. Mater. Chem. A, 2023,11, 22803-22812

An ultrafine spider-like carbon nanonet for high performance air filters, health monitoring sensors, and green energy generators

Z. Xiong, M. Xia, X. Guo, L. Wang, Y. Wu, Q. Cheng, J. Xu, S. He, M. Li, K. Liu and D. Wang, J. Mater. Chem. A, 2023, 11, 22803 DOI: 10.1039/D3TA05039D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements