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Sulfur-doped Sb2O3 nanorods (X-Sb2O3) have been synthesized via a self-assembly process with subsequent calcination, using bulk Sb as the precursor and H2SO4 as the sulfur source. The obtained X-doped Sb2O3 nanorods were confirmed as efficient and stable catalysts for electrochemical nitrogen reduction, which exhibited a superior ammonia yield of 6.88 μg h–1 cm–2 with a Faradaic efficiency of 32.5% at −0.18 V versus RHE. Moreover, the doping amount of sulfur in X-Sb2O3 could be controlled by the calcination temperatures in a muffle furnace. Density functional theory calculations revealed that N2 was readily adsorbed on the O atom of the 300-Sb2O3 surface, and the subsequent reduction reactions further occurred on the O active site by the distal mechanism. Meanwhile, the superior electrocatalyst performance of 300-Sb2O3 was attributed to sulfur doping, which effectively tuned the electronic structures of Sb2O3 to promote the adsorption and activation ability of N2. This work provides an easy and efficient way to dope non-metals in Sb2O3 for excellent electrocatalytic performance.

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Two types of energetic semiconductor bridges (ESCBs), with 3μm and 6μm Al/MoO3 energetic multilayer nanofilms integrated respectively, were prepared with microfabrication technique. The influence of Al/MoO3 nanofilms thickness on the firing and initiation characteristics of ESCBs was investigated. Results show that critical firing time and critical firing energy of ESCBs do not change significantly. The flame size of SCB-Al/MoO3(6μm) is twice than that of SCB-Al/MoO3(3μm) at 100μs. Furthermore, the firing duration of SCB-Al/MoO3(6μm) is 540μs, much higher than SCB-Al/MoO3(3μm) 300μs, which is very useful for the initiation of energetic materials. However, the contact and noncontact initiation of ESCBs on HMX-Al/MoO3 composite explosives show that the film thickness of Al/MoO3 has the remarkable influence on the initiation ability of ESCBs. The results from experiments deepen the understanding of the influence of thickness of Al/MoO3 nanofilms on the firing performance of SCB, which is very meaningful for the initiation of energetic materials.