Until now, the synthesis of cationic vanadate nanofibers/conducting polymers composites have required template such as surfactants and electrochemical equipment for the coating of conducting polymers. The cationic vanadate nanofibers have been synthesized by complex methods to overcome the low electrical conductivity of bulk vanadium oxide (V₂O₅). However, in some cases a reaction time of at least 10 h is needed. In this study, for the first time, Poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) intercalated ammonium vanadate ((NH₄)₂V₆O₁₆∙1.5H₂O) nanofiber (AVNF) composites were synthesized in 4 h using a simple sonochemical method for NH₃ gas sensing studies. In addition, chemical composition, crystal morphologies and structures changes of the nanofiber composites according to the intercalation of ammonium cation and PSS:PEDOT were investigated. The NH₃ gas sensing results reveal that the fabricated PEDOT:PSS-AVNF composite sensor had higher sensitivity and shorter response time to NH₃ gas than V₂O₅, PEDOT, AVNF, and PEDOT-AVNF sensors at room temperature (24 °C). The enhanced NH₃ sensitivity was mainly attributed to enhanced electrical conductivity (4.5 × 10⁻² S. cm^-1), high surface area, and p-p heterojunctions formed between the PEDOT:PSS and AVNF. The results obtained in this research demonstrate the beneficial effects of intercalating PEDOT:PSS in AVNF for NH₃ gas sensing.

迄今为止，阳离子钒酸盐纳米纤维/导电聚合物复合材料的合成都需要模板，例如表面活性剂和用于涂覆导电聚合物的电化学设备。为了克服本体钒氧化物（V ₂ O ₅）的低电导率，已经通过复杂的方法合成了阳离子钒酸盐纳米纤维。但是，在某些情况下，至少需要10个小时的反应时间。在这项研究中，聚（3,4-乙撑二氧噻吩）：聚（4-苯乙烯磺酸盐）（PEDOT：PSS）首次插入了钒酸铵（（NH ₄）₂ V ₆ O ₁₆ ∙1.5H ₂O）纳米纤维（AVNF）复合材料是在4小时内使用简单的声化学方法合成的，用于NH ₃气体传感研究。此外，研究了根据铵阳离子和PSS：PEDOT插层的纳米纤维复合材料的化学组成，晶体形貌和结构变化。NH ₃气体感测结果表明，在室温（24°C）下，与V ₂ O ₅，PEDOT，AVNF和PEDOT-AVNF传感器相比，所制造的PEDOT：PSS-AVNF复合传感器具有更高的灵敏度和对NH ₃气体的响应时间更短。）。NH ₃敏感性增强主要归因于电导率提高（4.5×10 ^-2 S. cm ^-1），高表面积以及PEDOT：PSS和AVNF之间形成的pp异质结。这项研究中获得的结果证明了在AVNF中插入PEDOT：PSS对于NH ₃气敏的有益作用。