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二氧化硅纳米颗粒在金表面的二维组织：一氧化碳标记物检测与存储

2-D organization of silica nanoparticles on gold surfaces: CO marker detection and storage.

作者信息

Cueto Díaz Eduardo José, Gálvez-Martínez Santos, Torquemada Vico Ma Carmen, Valles González María Pilar, Mateo-Martí Eva

机构信息

Centro de Astrobiología (CSIC-INTA) Ctra. Ajalvir, Km. 4, 28850 Torrejón de Ardoz Madrid Spain

National Institute of Aerospace Technology (INTA), Department of Payloads and Space Sciences Ctra. Torrejón-Ajalvir 28850 Torrejon de Ardoz Spain.

出版信息

RSC Adv. 2020 Aug 27;10(53):31758-31764. doi: 10.1039/d0ra04770h. eCollection 2020 Aug 26.

DOI:10.1039/d0ra04770h
PMID:35518154
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9056548/
Abstract

A single layer of silica nanoparticles with an average size of ∼200 nm was deposited over the surface of pristine gold wafers, aided by (3-mercaptopropyl)trimethoxysilane. The nanoparticle immobilization was driven by covalent bonding rather than a self-assembly process, leading to a cluster-assembled material which has CO sensing features. Here, we show how this device can be used for CO physisorption and chemisorption. We analyse the device, both spectroscopically and morphologically, before and after exposure to an atmosphere of 7 mbar of CO, inside a planetary atmospheres and surfaces simulation chamber, (PASC) mimiking Martian atmospheric conditions. Our studies demonstrate that these clusters are suitable for CO detection and storage, under well controlled experimental Martian conditions. Their high sensitivity at a very low concentration of CO, 12.4 ppm, makes them ideal candidates in the nanosensor field.

摘要

在（3-巯基丙基）三甲氧基硅烷的辅助下，将平均尺寸约为200 nm的单层二氧化硅纳米颗粒沉积在原始金片表面。纳米颗粒的固定是通过共价键而非自组装过程实现的，从而形成了具有CO传感特性的团簇组装材料。在此，我们展示了该装置如何用于CO的物理吸附和化学吸附。在模拟火星大气条件的行星大气与表面模拟室（PASC）中，我们在暴露于7 mbar CO气氛之前和之后，对该装置进行了光谱和形态分析。我们的研究表明，在精心控制的实验火星条件下，这些团簇适用于CO检测和存储。它们在极低CO浓度（12.4 ppm）下具有高灵敏度，使其成为纳米传感器领域的理想候选者。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5267/9056548/7fafbf3d6d34/d0ra04770h-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5267/9056548/6104fe59fd64/d0ra04770h-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5267/9056548/164ce034b493/d0ra04770h-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5267/9056548/95f4f83c2f2e/d0ra04770h-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5267/9056548/fe686446208a/d0ra04770h-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5267/9056548/1f4466516813/d0ra04770h-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5267/9056548/7fafbf3d6d34/d0ra04770h-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5267/9056548/6104fe59fd64/d0ra04770h-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5267/9056548/164ce034b493/d0ra04770h-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5267/9056548/95f4f83c2f2e/d0ra04770h-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5267/9056548/fe686446208a/d0ra04770h-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5267/9056548/1f4466516813/d0ra04770h-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5267/9056548/7fafbf3d6d34/d0ra04770h-f6.jpg

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