The construction of hierarchical hollow Double-Shelled Co3O4 for the enhanced thermal decomposition of Ammonium perchlorate

Chen, Jiaqi; Zhang, Lili; Sun, Jingwen; Zhu, Jun; Wang, Xin; Fu, Yongsheng

doi:10.1016/j.apsusc.2021.151342

Cited by 28 publications

(11 citation statements)

References 49 publications

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“…The low-magnification SEM image (Figure S6a) demonstrates a polyhedral morphology with smooth surfaces, and some polyhedrons exhibit open voids and fine cracks that indicate hollow structures. Such structures may result from the oxidation and decomposition of the composite precursors Figure S6b,c illustrates that the Ni-P 2 O 5 /MoO 3 HPHS has a typical truncated polyhedron shape at high magnification.…”

Section: Resultsmentioning

confidence: 99%

“…Such structures may result from the oxidation and decomposition of the composite precursors. 54 Figure S6b,c illustrates that the Ni-P 2 O 5 /MoO 3 HPHS has a typical truncated polyhedron shape at high magnification. These images amply prove that there are many pits and ravines on the surface of the material, which increase the specific surface area, which is favorable for the adsorption and desorption of the material, thereby improving its sensitivity for DEA gas.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Oxygen Vacancies Induced by Pd Doping in Ni-P₂O₅/MoO₃ Hollow Polyhedral Heterostructures for Highly Efficient Diethylamine Gas Sensing

et al. 2022

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Semiconductor metal-oxide materials have a high surface-to-volume ratio and many active sites, making them potentially useful for gas sensing. Dopants introduced into the lattice can improve the catalytic activity of oxides and promote the formation of oxygen vacancies, hence improving the sensing performance of the materials. However, the simple preparation of materials with high sensitivity, selectivity, and a low detection limit remains a challenge. Herein, we report on the synthesis of Ni-P2O5/MoO3 and Pd-doped Ni-P2O5/MoO3 hollow polyhedral heterostructures (HPHSs) and their application in diethylamine (DEA) sensing for the first time. The Pd-doped Ni-P2O5/MoO3 HPHS was synthesized by doping different proportions of palladium-containing precursors using hydrothermal and solid-state reaction techniques. The concentration of oxygen vacancies in the HPHS composite increased by increasing Pd doping from 2 to 6 weight percent (wt %) but later reduced, according to X-ray photoelectron spectroscopy (XPS) measurements. Pd6%Ni-P2O5/MoO3 has the highest sensitivity to DEA (R a/R g = 42.5) and is 5.0 times and 42.5 times more sensitive than the pure Ni-P2O5/MoO3 HPHS (R a/R g = 8.5) and commercial ammonium phosphomolybdate (R a/R g = 1) at 175 °C toward 10 ppm DEA. Moreover, the DEA sensor exhibits a low detection limit (R a/R g = 3.5@1 ppm) with a wide dynamic response (R a/R g = 145.5@50 ppm). The remarkable improvement in DEA sensitivity is attributed to the hollow polyhedral structure, heterostructures, and oxygen vacancies formed by Pd doping. This study confirms that developing Pd-doped Ni-P2O5/MoO3 HPHSs provides an innovative approach for DEA sensors.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Oxygen Vacancies Induced by Pd Doping in Ni-P₂O₅/MoO₃ Hollow Polyhedral Heterostructures for Highly Efficient Diethylamine Gas Sensing

et al. 2022

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“…[39][40][41] Herein, the most important kinetic parameter to precede the reaction is activation energy and it finds out from the well-known Arrhenius equation and its modified term of Kissinger equation to study the effect catalysts rGO, BCC, and BCC/rGO composite on the thermolysis of AP and NTO. [42,43] The decomposition temperature data at 5, 10, and 15 °C min À 1 between the extent of conversion α = 0.1-0.9 were used to calculate the activation energy. In this application, "deconvolution" refers to the resolution of overlapping rate peaks into individual rate peaks that may be assumed to reflect individual response steps.…”

Section: Kinetic Investigationmentioning

confidence: 99%

Effects of Barium‐Copper‐Cobalt oxide composites supported on reduced graphene oxide in the thermolysis of ammonium perchlorate and 3‐nitro‐1,2,4‐triazol‐5‐one

Dave

Sirach

2023

ChemistrySelect

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Synthesis method of nanocrystalline Barium‐Copper‐Cobalt oxide (BCC) and its composite with reduced graphene oxide (rGO) was provided. The size of nanocrystalline (∼13 nm) materials (BCC and BCC/rGO) was confirmed using powder X‐ray diffraction patterns. The effect of rGO, BCC, and BCC/rGO on the thermal decomposition of 3‐Nitro‐1,2,4‐triazol‐5‐one (NTO) and ammonium perchlorate (AP) was investigated using simultaneous thermal analysis. Non‐isothermal isoconversion method was used to calculate the activation energy of AP and NTO with and without rGO, BCC, and BCC/rGO. The thermal analysis suggests that in the presence of BCC and BCC/rGO, the thermal decomposition exotherm of NTO was lowered to ∼259, and ∼228 °C, respectively, and that of AP was lowered to 355, and 345 °C, respectively. BCC and BCC/rGO exhibit very good catalytic activity for the thermal decomposition of NTO by lowering NTO's activation energy barrier by ∼179 and 261 kJ mol−1, respectively. The activation energy calculations for low thermal decomposition and high thermal decomposition of AP (∼95 kJ mol−1 average) do not provide conclusive evidence to confirm the catalytic influence of BCC and BCC/rGO. The composition NTO+BCC has a lower activation energy barrier (∼121 kJ mol−1) than pure NTO which makes the thermal decomposition of NTO+BCC more favorable than pure NTO making its application in insensitive munitions more favorable. AP+BCC decomposes within a short temperature range and hence, it can be used in solid rocket propellants requiring faster decomposition of AP in place of pure AP.

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“…This was the characteristic peak of AP decomposition at a high temperature, which was closely related to the composition. 61,62 Fig. 6d shows the optical microscope image of composite propellant wound healing.…”

Section: Applicationmentioning

confidence: 99%

Rapid self-healing and tough polyurethane based on the synergy of multi-level hydrogen and disulfide bonds for healing propellant microcracks

Xiang

et al. 2022

Mater. Chem. Front.

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The construction of hierarchical hollow Double-Shelled Co3O4 for the enhanced thermal decomposition of Ammonium perchlorate

Cited by 28 publications

References 49 publications

Oxygen Vacancies Induced by Pd Doping in Ni-P₂O₅/MoO₃ Hollow Polyhedral Heterostructures for Highly Efficient Diethylamine Gas Sensing

Oxygen Vacancies Induced by Pd Doping in Ni-P₂O₅/MoO₃ Hollow Polyhedral Heterostructures for Highly Efficient Diethylamine Gas Sensing

Effects of Barium‐Copper‐Cobalt oxide composites supported on reduced graphene oxide in the thermolysis of ammonium perchlorate and 3‐nitro‐1,2,4‐triazol‐5‐one

Rapid self-healing and tough polyurethane based on the synergy of multi-level hydrogen and disulfide bonds for healing propellant microcracks

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The construction of hierarchical hollow Double-Shelled Co3O4 for the enhanced thermal decomposition of Ammonium perchlorate

Cited by 28 publications

References 49 publications

Oxygen Vacancies Induced by Pd Doping in Ni-P2O5/MoO3 Hollow Polyhedral Heterostructures for Highly Efficient Diethylamine Gas Sensing

Oxygen Vacancies Induced by Pd Doping in Ni-P2O5/MoO3 Hollow Polyhedral Heterostructures for Highly Efficient Diethylamine Gas Sensing

Effects of Barium‐Copper‐Cobalt oxide composites supported on reduced graphene oxide in the thermolysis of ammonium perchlorate and 3‐nitro‐1,2,4‐triazol‐5‐one

Rapid self-healing and tough polyurethane based on the synergy of multi-level hydrogen and disulfide bonds for healing propellant microcracks

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Oxygen Vacancies Induced by Pd Doping in Ni-P₂O₅/MoO₃ Hollow Polyhedral Heterostructures for Highly Efficient Diethylamine Gas Sensing

Oxygen Vacancies Induced by Pd Doping in Ni-P₂O₅/MoO₃ Hollow Polyhedral Heterostructures for Highly Efficient Diethylamine Gas Sensing