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A sensitive calorimetric technique to study energy (heat) exchange at the nano-scale†
Nanoscale ( IF 5.8 ) Pub Date : 2018-04-27 00:00:00 , DOI: 10.1039/c8nr00747k Luca Basta 1, 2, 3, 4 , Stefano Veronesi 1, 2, 3, 4 , Yuya Murata 1, 2, 3, 4 , Zoé Dubois 1, 2, 3, 4 , Neeraj Mishra 3, 4, 5, 6, 7 , Filippo Fabbri 3, 4, 5, 6, 7 , Camilla Coletti 3, 4, 5, 6, 7 , Stefan Heun 1, 2, 3, 4
Nanoscale ( IF 5.8 ) Pub Date : 2018-04-27 00:00:00 , DOI: 10.1039/c8nr00747k Luca Basta 1, 2, 3, 4 , Stefano Veronesi 1, 2, 3, 4 , Yuya Murata 1, 2, 3, 4 , Zoé Dubois 1, 2, 3, 4 , Neeraj Mishra 3, 4, 5, 6, 7 , Filippo Fabbri 3, 4, 5, 6, 7 , Camilla Coletti 3, 4, 5, 6, 7 , Stefan Heun 1, 2, 3, 4
Affiliation
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Every time a chemical reaction occurs, an energy exchange between reactants and the environment takes place, which is defined as the enthalpy of the reaction. During the last few decades, research has resulted in an increasing number of devices at the micro- or nano-scale. Sensors, catalyzers, and energy storage systems are more and more developed as nano-devices which represent the building blocks for commercial “macroscopic” objects. A general method for the direct evaluation of the energy balance of such systems is not available at present. Calorimetry is a powerful tool to investigate energy exchange, but it usually requires macroscopic sample quantities. Here, we report on the development of an original experimental setup able to detect temperature variations as low as 10 mK in a sample of ∼10 ng using a thermometer device having physical dimensions of 5 × 5 mm2. This technique has been utilized to measure the enthalpy release during the adsorption process of H2 on titanium-decorated monolayer graphene. The sensitivity of these thermometers is high enough to detect a hydrogen uptake of ∼10−10 moles, corresponding to ∼0.2 ng, with an enthalpy release of about 23 μJ. The experimental setup allows, in perspective, scalability to even smaller sizes.
中文翻译：
研究纳米级能量（热）交换的灵敏量热技术†
每次发生化学反应时，都会在反应物和环境之间发生能量交换，这被定义为反应的焓。在过去的几十年中，研究已导致微米级或纳米级设备数量的增加。传感器，催化剂和能量存储系统越来越多地被开发为代表商业“宏观”物体构建模块的纳米设备。目前尚没有用于直接评估这种系统的能量平衡的通用方法。量热法是研究能量交换的有力工具，但通常需要宏观的样品量。这里，2。该技术已用于测量在装饰钛的单层石墨烯上H 2吸附过程中的焓释放。这些温度计的灵敏度足够高，可以检测到〜10 -10摩尔的氢吸收，相当于〜0.2 ng，焓释放约为23μJ。从角度看，实验性设置允许将扩展性扩展到更小的尺寸。
更新日期：2018-04-27
中文翻译：
研究纳米级能量（热）交换的灵敏量热技术†
每次发生化学反应时，都会在反应物和环境之间发生能量交换，这被定义为反应的焓。在过去的几十年中，研究已导致微米级或纳米级设备数量的增加。传感器，催化剂和能量存储系统越来越多地被开发为代表商业“宏观”物体构建模块的纳米设备。目前尚没有用于直接评估这种系统的能量平衡的通用方法。量热法是研究能量交换的有力工具，但通常需要宏观的样品量。这里，2。该技术已用于测量在装饰钛的单层石墨烯上H 2吸附过程中的焓释放。这些温度计的灵敏度足够高，可以检测到〜10 -10摩尔的氢吸收，相当于〜0.2 ng，焓释放约为23μJ。从角度看，实验性设置允许将扩展性扩展到更小的尺寸。
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