In the past few years, the hydrothermal carbonization process (HTC) is standing out as a "green", economic, versatile and sustainable approach for the production of a wide variety of carbon materials [1]. Recent works show that the appropriate selection of the initial carbon precursor/additives, allows the introduction of specific functionalities (i.e. N, S) in the final carbonaceous materials [2-4]. Such heteroatoms are highly beneficial for certain applications, such as supercapacitors, catalysis or CO2 capture. In particular, the introduction of nitrogen functionalities is attracting much attention because it improves thermal/oxidation stability of carbon materials, as well as their electrical conductivity. Additionally, the nitrogen dopants give rise to Faradaic redox reactions, increasing the specific capacitance of carbon materials [5]. Furthermore, N-containing surface functionalities grant basicity to carbon materials, which is expected to be favorable for the adsorption of acidic gases, such as CO2, SO2 or H2S.
展开▼
机译：在过去几年中，水热碳化过程（HTC）被突出为“绿色”，经济，多功能和可持续的方法，用于生产各种碳材料[1]。 Recent works show that the appropriate selection of the initial carbon precursor/additives, allows the introduction of specific functionalities (i.e. N, S) in the final carbonaceous materials [2-4].这种杂原子对某些应用具有高益处，例如超级电容器，催化剂或CO2捕获。特别是，氮功能的引入是吸引众多关注的，因为它提高了碳材料的热/氧化稳定性以及它们的导电性。另外，氮气掺杂剂引起了游览氧化还原反应，增加了碳材料的比电容[5]。此外，含N的表面官能团给予碳材料的碱性，这预计将有利于酸性气体的吸附，例如CO 2，SO2或H2S。
展开▼
