Diamondoid Nanostructures as sp3 -Carbon-Based Gas Sensors.
Diamondoid Nanostructures as sp3 -Carbon-Based Gas Sensors.
复制标题
DOI：
10.1002/anie.201903089
复制
发表时间：
2019-06
影响因子：
--
通讯作者：
Oana Moncea;J. Casanova-Cháfer;D. Poinsot;Lukas Ochmann;Clève D. Mboyi;Houssein Nasrallah;E. Llobet-
中科院分区：
文献类型：
--
作者：
Oana Moncea;J. Casanova-Cháfer;D. Poinsot;Lukas Ochmann;Clève D. Mboyi;Houssein Nasrallah;E. Llobet-
金刚石类化合物是 sp3 杂化的纳米尺寸类金刚石碳氢化合物（纳米金刚石），通过羟基和伯氧化膦基团双官能化，可通过气相沉积组装第一个基于 sp3 -C 的化学传感器。原始纳米金刚石和钯纳米层复合材料均可用于检测有毒的 NO2 和 NH3 气体。这种碳基气体传感器技术可实现低至 50 ppb 浓度的可逆 NO2 检测和 25-100 ppm 浓度的 NH3 检测，并在 100 °C 下实现快速响应和恢复过程。可逆气体吸附和检测兼容 50% 湿度条件。半导体 p 型传感特性是通过基于伯膦-金刚烷醇的器件实现的，其中高比表面积（约 140 m2 g-1）和通道纳米孔隙率源自氢键。
Diamondoids, sp3 -hybridized nanometer-sized diamond-like hydrocarbons (nanodiamonds), difunctionalized with hydroxy and primary phosphine oxide groups, enable the assembly of the first sp3 -C-based chemical sensors by vapor deposition. Both pristine nanodiamonds and palladium nanolayered composites can be used to detect toxic NO2 and NH3 gases. This carbon-based gas sensor technology allows reversible NO2 detection down to 50 ppb and NH3 detection at 25-100 ppm concentration with fast response and recovery processes at 100 °C. Reversible gas adsorption and detection is compatible with 50 % humidity conditions. Semiconducting p-type sensing properties are achieved from devices based on primary phosphine-diamantanol, in which high specific area (ca. 140 m2 g-1 ) and channel nanoporosity derive from H-bonding.