Dip‐Pen Nanolithography‐Based Fabrication of Meta‐Chemical Surface for Heavy Metal Detection: Role of Poly‐Methyl Methacrylate in Sensor Sensitivity DOI Creative Commons

Rahma Okbi,

Mohammed Alkrenawi,

Krishna K. Yadav

и другие.

Small Science, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 20, 2024

A meta‐chemical surface is being patterned via dip‐pen nanolithography (DPN) for novel electrochemical heavy metal sensors. The unique feature of DPN allows a precise transfer desired ink onto various surfaces. Two kinds sensors are developed, which differ by the ligand in poly‐methyl methacrylate (PMMA)‐based ink: 1,8‐diaminonaphthalene (DAN) and D‐penicillamine (D‐PA). nanosize, surface‐to‐volume ratio (18.6 23.1 μm −1 DAN‐ D‐PA‐based ink, respectively), binding strength between cation (2.21 −21.37 kcal mol respectively) found to be source their high sensitivity, with limit detection values 0.40 0.30 ppb DAN D‐PA, respectively. According DFT calculations, reactions presence PMMA more exergonic; this indicates that added patterning process improves metals ligands. This enhanced ligands crucial innovative function can enhance sensor performance.

Язык: Английский

CuO and spinel CuCo2O4 supported on mesoporous nanocubes with dual redox-active centers for electrocatalytic H2O2 reduction and sensing DOI
Mao-Sung Wu, Jiawei Lin,

Sheng-Chieh Kung

и другие.

Journal of Alloys and Compounds, Год журнала: 2024, Номер 1009, С. 177038 - 177038

Опубликована: Окт. 15, 2024

Язык: Английский

Процитировано

1
Dip‐Pen Nanolithography‐Based Fabrication of Meta‐Chemical Surface for Heavy Metal Detection: Role of Poly‐Methyl Methacrylate in Sensor Sensitivity DOI Creative Commons

Rahma Okbi,

Mohammed Alkrenawi,

Krishna K. Yadav

и другие.

Small Science, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 20, 2024

A meta‐chemical surface is being patterned via dip‐pen nanolithography (DPN) for novel electrochemical heavy metal sensors. The unique feature of DPN allows a precise transfer desired ink onto various surfaces. Two kinds sensors are developed, which differ by the ligand in poly‐methyl methacrylate (PMMA)‐based ink: 1,8‐diaminonaphthalene (DAN) and D‐penicillamine (D‐PA). nanosize, surface‐to‐volume ratio (18.6 23.1 μm −1 DAN‐ D‐PA‐based ink, respectively), binding strength between cation (2.21 −21.37 kcal mol respectively) found to be source their high sensitivity, with limit detection values 0.40 0.30 ppb DAN D‐PA, respectively. According DFT calculations, reactions presence PMMA more exergonic; this indicates that added patterning process improves metals ligands. This enhanced ligands crucial innovative function can enhance sensor performance.

Язык: Английский

Процитировано

0