JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2019
·Vol. 140
·期 4
·1759-1767
·
IF 2.471
Zhang Jiankan,Zhao Fengqi,Yang Yanjing,Yan Qilong,Zhang Ming,Ma Wenzhe
Fe 3 O 4 /reduced graphene oxide (Fe 3 O 4 /rGO) nanocomposite has been successfully fabricated using a modified interface solvothermal method and characterized by X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. In the preparation procedure, graphene oxide was reduced and ultrafine Fe 3 O 4 nanoparticles (NPs) were uniformly loaded on reduced graphene oxide (rGO) carrier. Scanning electron microscope, transmission electron microscope images and Brunauer–Emmett–Teller specific surface area revealed that the aggregation of Fe 3 O 4 NPs was greatly reduced by introducing rGO as a substrate. The average size of the Fe 3 O 4 NPs anchored on the graphene sheets was 100 nm, which is much smaller than 1-μm bare Fe 3 O 4 . The DSC results showed that Fe 3 O 4 /rGO nanocomposite reduces the first decomposition temperature of dihydroxylammonium 5,5′-bistetrazole-1,1′-diolate (TKX-50) by 44.9 °C and decreases the apparent activation energy of TKX-50 by 26.2 kJ mol −1 , which exhibits higher catalytic performance than its individual components and their physical mixture (hybrid). Hence, Fe 3 O 4 /rGO nanocomposite can be a promising additive for insensitive solid propellants based on TKX-50.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2023
·
IF 3.8
Zhen Zhang,Zhao Qin,Ming Zhang,Yifan Jiang,Chao Chen,Jiankan Zhang,Fengqi Zhao
The carbon dots (CDs) were prepared by the oxidation etching method. On this basis, the composite materials of CDs and Cu (CDs/Cu) were synthesized by the hydrothermal method . The elemental composition, morphology and structure were analyzed by TEM, SEM, EDS , XRD and XPS . The effects of CDs and CDs/Cu for thermal decomposition of TKX-50 pyrolysis were studied by DSC-FTIR-MS and in-situ solid FTIR . The CDs and CDs/Cu reduced the low-temperature decomposition peak temperature of TKX-50 by 10.1 ℃ and 16.1 ℃ respectively (10 ℃·min −1 ), and the second decomposition peak almost disappeared. This is because CDs and CDs/Cu can effectively facilitate the thermal decomposition of TKX-50 into NH 2 OH and 1,1′-ditetrazole diol (BTO). The CDs can promote the direct decomposition of BTO into small molecule gases and stable polymers at the initial pyrolysis stage. And they inhibit the combination of BTO and NH 3 into 5,5′-bistetrazole-1,1′-didiolate (ABTOX), which is more difficult to decompose. So, the HCN and N 2 /CO were increased obviously during pyrolysis while NH 3 and H 2 O content were decreased. On the other hand, the CDs/Cu promotes the decomposition of NH 2 OH in the first reaction. It manifested as the increase of NH 3 and H 2 O. At the same time, the CDs/Cu facilitates the transition of difficult to decompose ABTOX losing NH 3 to BOX to accelerate thermal decomposition reaction , playing a synergistic catalytic effect. Thus, in-situ solid FTIR signal of ABTOX was significantly weakened and the total content of NH 3 was raised, especially the significant expansion of NH 3 in the second stage. Finally, the influence of the catalysts in ignition characteristics was contrasted and discussed. Under the lower-power density region, the CDs and CDs/Cu decreased the ignition delay time of TKX-50. The CDs/Cu caused the flame propagation velocity of TKX-50 faster. Therefore, the CDs and their composites, as another new lightweight carbon material, are expected to be applied in the catalytic combustion of energetic materials.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2021
·
IF 3.995
Chao Chen,Haijian Li,Zhao Qin,Changjian Wang,Yi Xu,Zhihua Sun,Siyu Xu,Jianhua Yi,Fengqi Zhao
Hexanitro complex K 2 Ba[Ni(NO 2 ) 6 ] was prepared via the co-precipitation method, and its composition and morphology were characterized by XRD , SEM , XPS and FT-IR techniques. The catalytic performances of K 2 Ba[Ni(NO 2 ) 6 ] for CL-20, FOX-7 and TKX-50 thermolysis were also discussed and studied by using DSC and TG-DTG-MS. After K 2 Ba[Ni(NO 2 ) 6 ] were mixed with CL-20, the activation energy ( E a ) of thermolysis reaction was increased, while the heat release was greatly improved, and the transformation from NH 3 to NO occurred. It is attributed to that the decomposition products of K 2 Ba[Ni(NO 2 ) 6 ] have strong effects on the oxidation of the radicals and the electrons transfer . Besides, the thermolysis E a of FOX-7 by addition of the K 2 Ba[Ni(NO 2 ) 6 ] was increased by 81.03 kJ mol −1 , and the heat release was greatly increased. In addition to that the two-step separate thermolysis processes of pure FOX-7 was almost replaced by a one-step exothermic reaction for the FOX-7/K 2 Ba[Ni(NO 2 ) 6 ] mixture, which was due to that Ni 2+ cations could effectively increase the activity of amino groups in the FOX-7 thermolysis process. Finally, K 2 Ba[Ni(NO 2 ) 6 ] scarcely has the thermolysis catalytic activity of TKX-50 owing to the influence of metal cations on the decomposition of the hydroxylamine . Furtherly, the characteristics of ignition and flame propagation on the three energetic mixtures were strongly correlated to their thermolysis pathway and mechanism. The comparative study on the effects of K 2 Ba[Ni(NO 2 ) 6 ] to the CL-20, FOX-7 and TKX-50 thermolysis and ignition showed that the hexanitro complex has great significance on promoting the heat release efficiency of solid propellants for future study.
研究领域:
材料科学
·
化学动力学
·
含能材料
·
催化化学
·
热分析
✓ 已验证
DOI
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2021
·
IF 3.995
Ming Zhang,Fengqi Zhao,Yanjing Yang,Hui Li,Ting An,Jiankan Zhang
rGO-Fe 2 O 3 nanocomposites with spherical, hollow and fusiform Fe 2 O 3 (s, h and f) microstructures have been successfully fabricated using DMF as solvent via a facile solvothermal method. The morphologies and compositions of the as-synthesized rGO-Fe 2 O 3 (s, h and f) nanocomposites were systematically studied using SEM, TEM , XRD , FTIR, RAMAN and XPS analysis . The rGO-Fe 2 O 3 (s, h and f) nanocomposites were used to catalyze the thermal decomposition of energetic TKX-50 and the corresponding kinetic parameters were calculated using an isoconversional model. The catalytic performance of Fe 2 O 3 (s, h and f) during the thermal decomposition of TKX-50 was significantly improved after being anchored onto the surface of graphene oxide . The as-synthesized rGO-Fe 2 O 3 (h) and rGO-Fe 2 O 3 (s) nanocomposites have an excellent effect toward reducing the temperature and apparent activation energy ( E a ) for TKX-50 decomposition, respectively. The excellent catalytic performance of rGO-Fe 2 O 3 (h) nanocomposite can be attributed to its external and internal surfaces, which provide more active sites for TKX-50 decomposition. In addition, the interactions formed between rGO and Fe 2 O 3 have a positive effect toward reducing the E a .
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Ming Zhang,Ting An,Xiuduo Song,Fengqi Zhao,Ergang Yao,Yongqiang Xue,Ying Wang,Xueli Chen,Zhifeng Yuan,Libai Xiao
In order to deal with the long-standing contradiction between safety and performance for propellent combustion catalyst, the TKX-50-M (M=Pb, Bi and Cu) were designed, synthesized and characterized. The density, thermal decomposition, mechanical sensitivity and energy performance of the prepared TKX-50-M were studied systemically. By taking NTO-Pb as the benchmark, the TKX-50-M exhibited much better energetic and safety properties. Besides, the combination of TKX-50-Pb, TKX-50-Cu and carbon black is conductive to the combustion of HMX-CMDB propellant. The burning rate of HMX-CMDB propellant increases from 16.80 to 21.28 mm s −1 at 20 MPa, and the pressure index reduces from 0.87 to 0.39 in the pressure range of 10–20 MPa. The catalytic mechanism of TKX-50-M were explored according to the results of combustion wave structure, flame image and characteristics of burning out surface. The catalytic effect of TKX-50-Pb is mainly reflected in the gas phase region, and the introduction of TKX-50-Cu and carbon black shows a significant synergistic catalytic effect. The results of this study not only help to explore insensitive high-energy combustion catalyst, but also helps to improve the combustion, energy and safety performance of CMDB propellants.
研究领域:
推进剂化学
·
材料科学
·
燃烧与爆炸动力学
✓ 已验证
产品关联
DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2021
·Vol. 23
·期 32
·17567-17575
·
IF 3.676
Ming Zhang,Fengqi Zhao,Hui Li,Shuai Dong,Yanjing Yang,Xiaoting Hou,Ting An,Zhoufeng Jiang
Novel ferrocene functionalized graphene with different molecular structures were designed, fabricated and characterized via SEM, EDS, FTIR, XPS and RAMAN methods. SEM results show the two-dimensional structure of the as-prepared catalysts, and the active metal Fe is uniformly distributed on the surface of graphene. The FTIR, XPS and RAMAN results confirmed the successful preparation of ferrocene functionalized graphene. The catalytic effects of the as-synthesized catalysts for the thermal decomposition of energetic TKX-50 were monitored by DSC, and the corresponding kinetic parameters were calculated using multi kinetic methods including traditional and nonlinear models. The results showed that the as-prepared ferrocene functionalized graphene can effectively promote the thermal decomposition of TKX-50 with the reduced decomposition peak temperatures and activation energies. In addition, the effects of ferrocene functionalized graphene for TKX-50 decomposition are reflected in both high and low temperature stages, and the effect on the high temperature stage is more significant. The outstanding catalytic activity of ferrocene functionalized graphene is related not only to the good dispersion of active Fe, but also to the enhanced interaction of small molecule products on two-dimensional graphene. Among the ferrocene functionalized graphene studied, G-792-Fe and G-902-Fe exhibit better catalytic effects on the thermal decomposition of TKX-50, which can be used as candidate catalysts for TKX-50-based solid propellants.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2023
·Vol. 148
·期 21
·12049-12057
·
IF 4.4
Zhang Ming,Zhao Fengqi,Jiang Yifan,Li Na,Li Hui,An Ting,Qin Zhao,Jiang Zhoufeng
Various graphene-salen iron nanocomplex S-551-Fe, S-602-Fe, S-902-Fe, S-590-Fe, S-792-Fe and S-550-Fe were successfully synthesized using different coupling agents. The microstructure, composition and structure of the prepared graphene-salen iron nanocomplex were characterized by SEM, EDS, FTIR, XPS and RAMAN routes. The results showed the successful fabrication of graphene-salen iron nanocomplex and their two-dimensional structure. In addition, the catalytic property of the graphene-salen iron nanocomplex on the pyrolysis property of TKX-50 was investigated via DSC method, and the kinetic data was calculated by linear and nonlinear models. The positive effects of the synthesized graphene-salen iron nanocomplex for TKX-50 pyrolysis were confirmed, and the impact on the second pyrolysis procedure of TKX-50 is more significant. Among the nanocomplex considered, the S-551-Fe has better catalytic property for TKX-50 pyrolysis, and the activation energy ( E a ) of TKX-50 decreased from 163.50 to 135.55 kJ·mol −1 in the conversion degree of 0.2 ~ 0.8. In addition, the catalytic mechanism of preferred S-551-Fe for TKX-50 pyrolysis was disclosed via in situ FTIR and gas phase MS methods. This study is helpful to the precise design of graphene iron coordination catalysts and the disclosure of their catalytic mechanism for TKX-50 pyrolysis.
研究领域:
材料化学
·
含能材料
·
催化化学
·
热分析
·
纳米复合材料
·
物理化学
✓ 已验证
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2025
·
IF 6
Junli Shi,Yongzheng Liu,Yuqi Wu,Yuxin Miao,Xianping Xin,Fanfan Shen,Linxiu Zhao,Duanlin Cao,Shengling Li
Background 5,5′-bistetrazole-1,1′-diolate (TKX-50), known as a novel explosive, is characterized by its high energy and low sensibility. It is a preferred explosive for criminals to carry out illegal attacks, posing a significant security risk. Therefore, the development of an efficient and highly specific detection method for TKX-50 is of significant practical importance. Fluorescent chemical sensors have demonstrated tremendous potential in explosive detection due to their high sensitivity, rapid response, and visual detection capabilities. Results A novel fluorescent chemical sensor N’-((E)-5-((E)-2-(3-(dicyanomethylene)-5,5-dimethylcyclohex-1-en- 1-yl )vinyl)-2-hydroxybenzylidene)-7-(diethylamino)-2-oxo-2H-chromene-3-carbohydrazide ( EXF ) was designed and synthesized, and its structure was characterized by 1 H NMR, 13 C NMR, and HRMS. The sensor can achieve continuous and specific detection of Cu 2+ and TKX-50 through the ‘on-off-on’ fluorescence response. The EXF achieved a detection limit of 0.0968 μM for Cu 2+ . The complex [ EXF -Cu 2+ ] could specifically identify the novel explosive TKX-50 among a variety of explosives tested, with a detection limit of 0.0648 μM. In this study, the qualitative detection of Cu 2+ and TKX-50 was carried out using test strips, and the quantitative determination of Cu 2+ and TKX-50 in real water samples was successfully achieved based on the standard curve of a smartphone. Additionally, EXF can be used for the visualization of latent fingerprints (LFPs), demonstrating its potential application in the field of criminal investigations. The application of EXF for Cu 2+ and TKX-50 imaging in living cells is also demonstrated. Significance The fluorescent sensor EXF establishes a connection between explosive detection and ion sensing by utilizing Cu 2+ as a “bridge”. This research not only provides innovative explosive detection technologies, but also offers valuable design principles for multifunctional fluorescent sensors. The test strips and smartphone platform have preliminarily achieved on-site rapid qualitative and quantitative detection. And the LFPs imaging and detection in living cells further expand the application field, which has significant practical application value.
研究领域:
分析化学
·
传感器与生物传感器
·
爆炸物检测
·
环境监测
·
法庭科学
·
生物成像
✓ 已验证
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Rui Huang,Lizhi Lin,Jinghua Zhang,Shaohua Jin,Qingquan Tian,Ziming Yang,Puwang Li,Yu Chen
Dihydroxylammonium 5, 5′-bistetrazole-1, 1′-diolate (TKX-50) is a new high-energy and insensitive material with broad application prospects. However, the discharge of TKX-50 wastewater from its production and applications not only causes the waste of high-value explosives, but also pollutes the environment. The traditional used adsorbents are poor adsorption efficiencies and recyclability performance in pratical applications. In this study, we successfully prepared a porous polyurethane/chitosan hybrid foam (PUF) with chitosan (CTS) as the active adsorption component by the semi-prepolymerization/acidification method. The compressive strength of the PUF can reach up to 8.83 kPa, and the static adsorption capacity of TKX-50 can reach 39.32 mg/g. The TKX-50 adsorption process and mechanism were further studied by the adsorption kinetics, isotherm and thermodynamics. The adsorbed TKX-50 was effectively recovered by NaOH solution, with a desorption rate exceeding 94 %. The dynamic adsorption investigation indicates that the PUF is suitable for industrial continuous flow wastewater treatment process in practical engineering. In all, our work has explored a new construction strategy of chitosan composited recyclable polyurethane hybrid foam materials with high TKX-50 adsorption efficiencies, and the obtained hybrid foam exhibits great application potentials for the treatment of TKX-50-containing wastewaters.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Nanomaterials
·
2019
·
IF 2.233
Yiping Shang,Wu Yang,Yabei Xu,Siru Pan,Huayu Wang,Xiong Cao
In this study, few-layered tungsten disulfide (WS2) was prepared using a liquid phase exfoliation (LPE) method, and its thermal catalytic effects on an important kind of energetic salts, dihydroxylammonium-5,5-bistetrazole-1,1-diolate (TKX-50), were investigated. Few-layered WS2 nanosheets were obtained successfully from LPE process. And the effects of the catalytic activity of the bulk and few-layered WS2 on the thermal decomposition behavior of TKX-50 were studied by using synchronous thermal analysis (STA). Moreover, the thermal analysis data was analyzed furtherly by using the thermokinetic software AKTS. The results showed the WS2 materials had an intrinsic thermal catalysis performance for TKX-50 thermal decomposition. With the few-layered WS2 added, the initial decomposition temperature and activation energy () of TKX-50 had been decreased more efficiently. A possible thermal catalysis decomposition mechanism was proposed based on WS2. Two dimensional-layered semiconductor WS2 materials under thermal excitation can promote the primary decomposition of TKX-50 by enhancing the H-transfer progress.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Xunjian Zhang,Shuping Zhang,Yige Wu,Xiao Xu,Liqian Song,Zhenbiao Liu,Xu Jia
This study aims to improve the mechanical sensitivity of TKX-50 by adding various thermal conductive materials. The results showed that the synergistic addition of one-dimensional (1D) and two-dimensional (2D) thermal conductive materials significantly improves thermal conductivity and mechanical sensitivity. Among them, PBX@AgNWs-Graphene demonstrated superior performance compared to the raw TKX-50, with 44.44 % increase in thermal conductivity, 120.00 % decrease in impact sensitivity, and 153.13 % decrease in friction sensitivity. Research revealed a positive correlation between thermal conductivity and impact sensitivity at low levels, but high thermal conductivity had limited impact on further reducing sensitivity. Absolutely, the research highlights the existence of an optimal range for the content of thermal conductive materials in the formula. Adding more than the optimal amount may not significantly boost impact sensitivity and may also degrade the detonation performance. These discoveries are pivotal for guiding the formulation design of TKX-50, ensuring the balance between impact sensitivity and detonation performance.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2022
·Vol. 97
·期 7
·1781-1791
·
IF 3.709
Yuying Ma,Haixia Zhao,Dongze Ma,Junmei Zhang
(Synthesis, characterization, and catalytic behaviour of nano-bimetallic nickel oxide on the thermal decomposition of dihydroxylammonium-5,5′-bistetrazole-1,1′-diolate) Bimetal combustion catalyst has become an emerging field in recent years, which is still in its infancy. When the combustion catalyst is used in double-base propellants, it can produce effects that conventional catalysts cannot achieve. In this study, nano-bimetallic nickel oxides (nanospheres of NiFe 2 O 4 and the sub-nanometre flower NiCo 2 O 4 ) were prepared by hydrothermal method and characterized using X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and N2 adsorption–desorption test (BET). Moreover, its thermal catalytic action on dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate (TKX-50) was studied. The thermal analysis of composite TKX-50/NiFe 2 O 4 and TKX-50/NiCo 2 O 4 was carried out by thermogravimetric differential scanning calorimetry (TG-DSC). The results show that when the addition amount of NiFe2O4 is 10%, the heating rate is 5.0 K min −1 , the NiFe 2 O 4 has the best catalytic activity for TKX-50 thermal decomposition, and the high thermal decomposition peak temperature (Tpeak1) is decreased by 29 °C. More interestingly, the apparent activation energies of the two composites were calculated by Kissinger, Ozawa, and Starink methods. The advanced thermal analysis kinetics software (AKTS) was used to perform kinetic calculations on the DSC experimental curves of the above-mentioned composite energetic materials, and reaction rate curves obtained by the simulation are in good agreement with the experimental curves of the thermal decomposition reaction process, further proving that the accuracy of the experiment is high. Therefore, the addition of NiFe 2 O 4 shows high catalytic efficiency on the thermal decomposition of TKX-50 components, and this would be beneficial to promote the burning rate of propellants containing TKX-50 components. © 2022 Society of Chemical Industry (SCI).
研究领域:
材料科学
·
推进剂化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）