Thermal decomposition of ammonium perchlorate in the presence of Al(OH)3·Cr(OH)3 nanoparticles

Zhang, Wenjing; Li, Ping; Xu, Hongbin; Sun, Run‐Cang; Qing, Peng-hui; Zhang, Yi

doi:10.1016/j.jhazmat.2014.01.016

Cited by 91 publications

(28 citation statements)

References 36 publications

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“…Specifically, AP in the absence and presence of 2 wt % pure g-C 3 N 4 , CuO, and g-C 3 N 4 /CuO (various content of CuO from 5 to 50 wt % versus g-C 3 N 4 /CuO), respectively, were utilized to investigate its thermal decomposition by differential thermal analysis (DTA) and thermal gravimetric analysis (TGA), and the results were illustrated in Figure 5 and Figure 6. The thermal decomposition process of AP in the absence of catalyst exhibited two exothermic peaks at 326.3 and 425.1 °C, corresponding to the low and high temperature decomposition stages [46], and one endothermic peak at 248.3 °C, which was the crystal transformation temperature of AP [47] (Figure 5). The addition of catalyst led to significant change in both high and low decomposition temperatures, while did not affect the crystal transformation temperature.…”

Section: Resultsmentioning

confidence: 99%

Direct Growth of CuO Nanorods on Graphitic Carbon Nitride with Synergistic Effect on Thermal Decomposition of Ammonium Perchlorate

Tan

et al. 2017

Materials

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Novel graphitic carbon nitride/CuO (g-C3N4/CuO) nanocomposite was synthesized through a facile precipitation method. Due to the strong ion-dipole interaction between copper ions and nitrogen atoms of g-C3N4, CuO nanorods (length 200–300 nm, diameter 5–10 nm) were directly grown on g-C3N4, forming a g-C3N4/CuO nanocomposite, which was confirmed via X-ray diffraction (XRD), transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), and X-ray photoelectron spectroscopy (XPS). Finally, thermal decomposition of ammonium perchlorate (AP) in the absence and presence of the prepared g-C3N4/CuO nanocomposite was examined by differential thermal analysis (DTA), and thermal gravimetric analysis (TGA). The g-C3N4/CuO nanocomposite showed promising catalytic effects for the thermal decomposition of AP. Upon addition of 2 wt % nanocomposite with the best catalytic performance (g-C3N4/20 wt % CuO), the decomposition temperature of AP was decreased by up to 105.5 °C and only one decomposition step was found instead of the two steps commonly reported in other examples, demonstrating the synergistic catalytic activity of the as-synthesized nanocomposite. This study demonstrated a successful example regarding the direct growth of metal oxide on g-C3N4 by ion-dipole interaction between metallic ions, and the lone pair electrons on nitrogen atoms, which could provide a novel strategy for the preparation of g-C3N4-based nanocomposite.

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Section: Resultsmentioning

confidence: 99%

Direct Growth of CuO Nanorods on Graphitic Carbon Nitride with Synergistic Effect on Thermal Decomposition of Ammonium Perchlorate

Tan

et al. 2017

Materials

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“…The as-prepared Co hydroxide crystalizes in CoOOH (R-3m), which can be demonstrated by its XRD pattern ( Figure S8), The as-prepared Cr hydroxide has a extremely low crystallinity suggested by its corresponding XRD result ( Figure S8), but its FT-IR spectrum( Figure S9) is similar to previous reported Cr(OH)3. [27][28][29] The LSV plots of CoOOH, Cr(OH)3 and CoCr LDH are presented in Figure 6a. It's worth noting that the current density of CoCr LDH at 1.6 V (vs. RHE) is ~20 mA/cm 2 , which is 15 times larger than that of CoOOH (1.2 mA/cm 2 ) and 221 times larger than that of Cr(OH)3 (0.09 mA/cm 2 ).…”

Section: Electrochemical Performancementioning

confidence: 99%

Rational design of cobalt–chromium layered double hydroxide as a highly efficient electrocatalyst for water oxidation

et al. 2016

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The design of high performance, stable and cost-effective eletrocatalyst for oxygen evolution is crucial for the H2 production from electrochemical water splitting. Here, dual-functional-site catalyst, cobalt-chromium layer double hydroxide (CoCr LDH) nanosheets are designed and synthesized , where the Co 2+ is the catalytic active site and Cr 3+ is the charge transfer site.It's for the first time for OER investigation of CoCr LDH. The CoCr LDH nanosheets have high specific surface area of 151.78 m 2 g -1 and exhibit outstanding OER activities, among the best of Co-based candidates. Accordingly, our catalyst affords a low onset potential of 1.47 V (vs. reversible hydrogen electrode, RHE) and a stable current density of 22.8 mA cm -2 at 1.61 V (vs. RHE) for 12 h. The Tafel slope of CoCr LDH is 81.0 mV dec -1 , smaller than that of state-of-the-art RuO2 (90.1 mV dec -1 ). Therefore, the CoCr LDH nanosheets are promising OER catalysts.

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“…4, the samples exhibited typical Type III isotherms with a hysteresis loop that is indicative of the presence of small slit-shaped pores in the samples. 22 The bands at 772.03 and 1165.24 cm À1 were attributed to the stretching vibration and bending vibration of Sb-OH, 23 respectively. Such changes in the structure characteristics were attributed to the impregnation of Ta in the framework of antimony oxide.…”

Section: Characterization Of Tasb-x Samplesmentioning

confidence: 99%

Pyrochlore Ta-doped antimony oxide as a novel adsorbent for efficient strontium removal

Zhang

et al. 2015

RSC Adv.

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Hydrous antimony oxide Sb 2 O 5 $4H 2 O with a pyrochlore structure is an ion exchanger that is selective toward Sr 2+ in mild solutions. The present study aims to improve the Sr 2+ adsorption capacity of antimony oxide. Cubic pyrochlore non-doped and Ta-doped antimony oxide nanoparticles were prepared by a hydrothermal method. The particles were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), N 2 gas sorption, Fourier transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS). Incorporation of Ta 5+ into the sorbent led to an expansion of the pyrochlore structure, and increases in the surface hydroxyl group content and surface area of the sorbent, consequently improving the Sr 2+ adsorption capacity considerably. A satisfactory correlation coefficient and a relatively low normalized standard deviation of the fit of the experimental data using the Freundlich model demonstrate that Sr 2+ adsorption onto Ta-doped antimony oxide proceeds via a multilayer chemical adsorption process.Thermodynamic studies were conducted under different reaction temperatures. The results indicate that Sr 2+ adsorption onto Ta-doped antimony oxide is an endothermic and a spontaneous process. Under the current experimental conditions, the maximal Sr 2+ adsorption capacity of 26.37 mg g À1 was obtained at pH 4.

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Thermal decomposition of ammonium perchlorate in the presence of Al(OH)3·Cr(OH)3 nanoparticles

Cited by 91 publications

References 36 publications

Direct Growth of CuO Nanorods on Graphitic Carbon Nitride with Synergistic Effect on Thermal Decomposition of Ammonium Perchlorate

Direct Growth of CuO Nanorods on Graphitic Carbon Nitride with Synergistic Effect on Thermal Decomposition of Ammonium Perchlorate

Rational design of cobalt–chromium layered double hydroxide as a highly efficient electrocatalyst for water oxidation

Pyrochlore Ta-doped antimony oxide as a novel adsorbent for efficient strontium removal

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