A one-step method assisted by hydrothermal treatment was approached to obtain nanocrystalline 1 and 10 mol.% In doped 2 mol.% Pd-SnO₂ powders using a non-ionic surfactant Brij52 and Polyethylene glycol 6000 (PEG) as templates. Depending on In content, the samples were labeled as Pd1InSn and Pd10InSn. The obtained materials consist of nanosized crystallites packed into micrometric grains with a high porosity, as revealed by the morphological and structural investigations (SEM, TEM). A dependence of the grain size with respect to the In content has been revealed i.e. the sample Pd1InSn was showing an average grain size of around 10 nm, whilst for the sample Pd10InSn the average grain size was found to be around 5 nm. The XPS investigations highlighted the differences occurred in the surface chemistry in terms of surface hydroxylation as well as the chemical states of Pd. The sensing properties towards different CO concentrations have been examined under infield background conditions, at low operating temperature of 50 °C. The sensing mechanism model for CO was discussed in detail according to the possible interplay between oxygen and water related species based on the experimentally results acquired through simultaneous electrical resistance and work function measurements.

采用非离子表面活性剂Brij52和聚乙二醇6000（PEG）为模板，采用水热处理辅助的一步法，获得了1和10摩尔％In掺杂2摩尔％Pd-SnO ₂纳米晶体粉末。根据In的含量，将样品标记为Pd1InSn和Pd10InSn。如形态学和结构研究（SEM，TEM）所揭示的，所获得的材料由填充到具有高孔隙率的微米级晶粒中的纳米级微晶组成。已经揭示出晶粒尺寸相对于In含量的依赖性，即样品Pd1InSn的平均晶粒尺寸约为10 nm，而样品Pd10InSn的平均晶粒尺寸约为5 nm。XPS的研究突显了表面化学方面在表面羟基化以及Pd的化学状态方面的差异。在田间背景条件下，在50°C的低工作温度下，已检测了对不同CO浓度的传感特性。根据通过同时进行电阻和功函数测量获得的实验结果，根据氧气和水相关物质之间可能存在的相互作用，详细讨论了CO的感测机制模型。