Preparation of High-Purity Mesoporous Alumina Material with Industrial Al(OH)3 via Ion Exchange

Li, Zhonglin; Wang, Ding; Chen, Junxue; Shen, Jialong; Li, Yuping; He, Guixiang; Li, Yibing

doi:10.1007/s12666-021-02489-y

Cited by 1 publication

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“…Fabricating nanostructures with good alignment and uniform size to actualize most of the proposed applications by the conventional lithographic process was even more difficult [ 6 ]. Various experiments have been conducted to create porous materials using naturally occurring materials or self-organizing materials such as carbonates [ 7 , 8 , 9 , 10 , 11 ]. Porous anodic alumina membranes (PAAMs), which are incredibly porous and have specified shapes and sizes, are one sort of ordered porous structure [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

High-Performance pH Sensor Electrodes Based on a Hexagonal Pt Nanoparticle Array-Coated Nanoporous Alumina Membrane

et al. 2022

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Porous anodic alumina membranes coated with Pt nanoparticles (PAAM/Pt) have been employed as pH sensor electrodes for H+ ion detection. The PAAM was designed using a two-step anodization process. Pt nanoparticles were then sputtered onto the membrane at different deposition times. The membrane’s morphological, chemical, and optical characteristics were carefully assessed following the fabrication stage using a variety of analytical techniques. The potential of the PAAM/Pt sensor electrode was investigated by measuring the potential using a simple potentiometric method. The effects of depositing Pt nanoparticles for 3–7 min on sensor electrode sensitivity were examined. The optimal potentiometric Nernstian response slope for the PAAM/Pt sensor electrode with 5 min Pt sputter coating is 56.31 mV/decade in the pH range of 3.0 to 10 at 293 K. Additionally, the PAAM/Pt sensor electrode’s stability and selectivity in various ions solutions were examined. The sensor electrode had a lifetime of more than six weeks and was kept in a normal air environment.

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