SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Li Zhu,Jing Ma,Yuyu Wang,Song Qiao,Yifan Wu,Min Xu,Wenxin Ji,Yonggang Sun,Yulong Ma
The full-component decomposition and reorganization of inert coal gasification fine slag (CGFS) could be achieved through exogenous enhancement, and this approach was also an inevitable choice for enterprises to realize clean production. In this work, a strategy for activating the CGFS structure via non-metallic heteroatomic nitrogen doping was proposed. CGFS was subjected to mechanical ball milling to obtain ball-milled CGFS (MCGFS), and the carbon-ash synergistic catalyst N d -MCGFS was further synthesized through dicyandiamide doping and hydrothermal treatment. The flotation-derived residual carbon (RC) and ball-milled inorganic minerals (MIM) were also prepared the composites N d -RC and N d -MIM under the same conditions. Under suitable conditions, the N d -MCGFS/PMS system achieved a BPA removal rate of 97.00 % within 60 min. The prepared N d -MCGFS had a nitrogen content of 0.73 %, an Fe N structure proportion of 18.80 %, and a specific surface area of 132.07 m 2 /g, while catalysts using RC or MIM alone as substrates showed inferior performance The mineral-based N d -MIM only achieved 45.81 %, while the residual carbon-based N d -RC mainly relied on adsorption. The residual carbon pores and mineral metal sites could promote carbon-ash synergy and enhance catalytic performance. In the N d -MCGFS/PMS system, PMS was activated by C O bonds and nitrogen species to generate reactive oxygen species (ROS). BPA degradation was realized through the cycle of high-valent iron‑oxygen species and electron transfer. The Fe leaching amount was approximately 43 times lower than that of the CGFS. This provides a new approach for the high-value utilization of CGFS.
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产品关联
DOI
高影响因子
SOLID STATE IONICS
·
2016
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IF 2.38
Shanshan Mo,Penghao Lu,Fei Ding,Zhibin Xu,Jiaquan Liu,Xingjiang Liu,Qiang Xu
Sulfide glasses with a high lithium-ion conductivity are promising solid electrolyte for all-solid-state lithium-ion batteries. In this study, 95(0.7Li 2 S–0.3P 2 S 5 )–5Li 3 PO 4 glass electrolyte is prepared by mixing 70Li 2 S-30P 2 S 5 (mol%) glass and Li 3 PO 4 crystal using mechanical milling technique. The effects on the structures and electrochemical properties of the obtained ternary sulfide glass were examined. The ternary sulfide glass shows a good electrochemical stability, which may exhibit a wide electrochemical window up to 10 V (vs. Li/Li + ). Furthermore, the 95(0.7Li 2 S-0.3P 2 S 5 )-5Li 3 PO 4 glass electrolyte displays an electrical conductivity of 2.513 × 10 − 3 S cm − 1 at 100 °C. The all-solid-state lithium-ion cell assembled with 95(0.7Li 2 S-0.3P 2 S 5 )-5Li 3 PO 4 glass electrolyte shows a favourable cyclability, which can reveal a discharge capacity of 144 mAh g − 1 at 0.05 °C and a discharge capacity of 63.9 mAh g − 1 at 0.1C after the 50th cycle at 100 °C, respectively.
研究领域:
材料科学
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电化学
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能源存储
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固态离子学
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锂电池技术
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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2022
·Vol. 46
·期 34
·16273-16279
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IF 3.925
Haiming Cheng,Chi Cao,Ying Zhang,Dayang Wang,Wensheng Yang,Renguo Xie
Low-dimensional organic–inorganic metal halides have shown great application potential and new opportunities for use in solid-state lighting due to their excellent optical and electronic properties. However, the most studied hybrid compounds contain lead, which limits their application environments. The preparation of organic–inorganic metal halides with high luminous efficiency, long-term stability, and a lead-free composition for environmental protection has become an important goal for the design of materials. Here, novel Sb3+-doped indium-based metal halides, (CH3NH3)4InCl6·Cl, have been designed and synthesized via a simple mechanical ball milling method; in the lead-free zero-dimensional (0D) halide (CH3NH3)4InCl6·Cl, isolated [InCl6]3− octahedra are separated by methylamine cations. Under UV excitation, the bulk-phase powder exhibits broadband orange-yellow emission peaking at 607 nm with a full width at half-maximum of ∼160 nm upon incorporating Sb3+ into the (CH3NH3)4InCl6·Cl matrix. The photoluminescence quantum yield (PLQY) of Sb3+-doped (CH3NH3)4InCl6·Cl is as high as 67.72%. The effects of the Sb3+-doping concentration on the crystal structure and optical characteristic have been investigated. The indirect band gap characteristics of (CH3NH3)4InCl6·Cl were demonstrated via density functional theory (DFT) calculations, and the relatively wide band gaps of 3.83 eV and 2.99 eV of (CH3NH3)4InCl6·Cl and (CH3NH3)4ClInCl6:Sb3+ were experimentally determined. These experimental results suggest that the as-prepared Sb3+-doped (CH3NH3)4InCl6·Cl has potential applications in solid-state lighting devices.
研究领域:
材料科学
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无机化学
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光电子学
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固体照明
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半导体材料
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DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2022
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IF 4.598
Xiuxia Lu,Haohao Liu,Xiaoxiao Shi,Jianyin Zhang
At present, it is still challenging to fabricate anode materials for lithium-ion batteries with excellent electrochemical performances by simple process on a large scale. In this paper, by using a conventional solid state reaction technique along with a mechanical ball milling method, an unique Li 3 Fe(MoO 4 ) 3 @C composite was synthesized. The amorphous carbon introduction is helpful in mitigating the volume expansion and enhancing the structural stability and electrochemical performance of the composite materials. After 100 cycles at 200 mA g −1 , the Li 3 Fe(MoO 4 ) 3 @C composite electrode maintained a high reversible capacity of 739 mAh/g with an initial Coulombic efficiency of 82 %. In addition, the rate performances of the composite electrode is also remarkable, and the reversible capacity is up to 740 mAh/g at 1600 mA g −1 . This work can provide inspiration for the preparation of molybdenum based transition metal oxide composites with high electrochemical performances for other alkali metal secondary batteries.
研究领域:
材料科学
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电化学
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能源存储
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2023
·Vol. 48
·期 47
·17957-17969
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IF 7.2
Wei Zhang,Dongliang Zhao,Jun Li,Zeming Yuan,Shihai Guo,Yan Qi,Yanghuan Zhang
Ball milling the powders of Mg-based alloys with transition metal compounds is effective for improving their hydrogen storage performances. In this experiment, the alloys of La 1.7 Y 0.3 Mg 16 Ni + x wt.% TiF 3 ( x = 0–10) were prepared through mechanical milling technology. XRD , SEM , HRTEM and granulometry were used to measure the composition and microstructure of alloys. The isothermal hydrogen storage property was measured by a Sievert apparatus. The results reveal that the TiF 3 additive in ball-milled samples transforms into MgF 2 and TiH 2 after the first hydrogen absorption . Adding TiF 3 enhances the crystallinity and reduces the average particle and crystallite sizes of alloys, which is beneficial to accelerating hydriding and dehydriding kinetics. Adding 7 wt% TiF 3 into alloy decreases the dehydrogenation activation energy from 72.2 to 64.0 kJ/mol and improves the hydrogen absorption rate at low temperatures, absorbing 3.50 wt% H in 0.5 min at 323 K.
研究领域:
材料科学
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氢能
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金属合金
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机械球磨
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DOI
高影响因子
危险品化学品经营许可证（带存储）