JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2022
·Vol. 106
·期 1
·274-284
·
IF 4.186
Hongpeng Zheng,Guoyao Li,Hezhou Liu,Yongmin Wu,Huanan Duan
A Ta-doped Li 7 La 3 Zr 2 O 12 (LLZTO) solid electrolyte is a promising candidate for all-solid-state lithium battery due to its high ionic conductivity and stability against lithium metal. In this work, physicochemical properties of both dry- and wet-milled LLZTO particles were investigated. Based on X-ray diffraction, Fourier transform–infrared, thermogravimetric analysis, and scanning electron microscopy results, it was confirmed that highly reactive LLZTO powder prepared in dry milling conditions exhibited faster size reduction, rougher surface morphology, fewer surface impurities, and less agglomerated particles, in contrast to those in wet milling conditions. Sintering these dry-milled powders at 1320°C for 10 min in the air via solid-state reaction produced dense ceramic pellets with a relative density of 97.4%. The room-temperature ionic conductivity for LLZTO pellet via the dry milling was determined to be 6.94 × 10 −4 S cm −1 . Li–sulfur batteries based on the pellets showed an initial discharge capacity of 1301 mA h g −1 and a coulombic efficiency of 99.82% when cycled at room temperature. The effect of the milled powder on the sintered pellets was discussed in terms of boundary mobility, pore mobility, and morphology.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yanfang Sun,Peng Sun,Shixin Niu,Boxiong Shen,Honghong Lyu
Obstacles such as aggregation and low activity of micron zero-valent iron in pollutant treatment could be overcome by sulfidation and biochar support. Ball milling is a promising method for the preparation of iron-based composites but the milling atmosphere is critical. To maximize the reactivity and identify the effects of ball mill atmosphere, ball milling technology under wet and dry atmosphere was applied to prepare composites from mZVI, Na 2 S 2 O 4 , and pine wood biochar (BC) for Cr(VI) removal. The results showed that S-mZVI/BC-wet was highly dispersible with more FeS 2 coverage and thus more efficient on Cr (VI) removal than S-mZVI/BC-dry (99.9 % removal in 80 min vs. 87.9 % removal in 24 h) at the optimum Fe: C mass ratio (1:1), S: Fe molar ratio (1:10), and reaction conditions. Cr(VI) was adsorbed by a spontaneous, endothermic mechanism that combined physisorption and chemisorption. The reduction process was vulcanization efficiency and iron cycle dependent. Reduction outperformed adsorption on the Cr(VI) removal and high reduction rateswere electron-selectively related (59.15 % for S-mZVI/BC-wet and 46.72 % for S-mZVI/BC-dry), implying S-mZVI/BC-wet was more capable. S-mZVI/BC-wet presented excellent anti-ageing property and slightly inferior regeneration performance. In conclusion, the composite prepared by wet ball milling have excellent performance in rapid and complete removal of Cr(VI), and S-mZVI/BC-wet has superior potential in acidic wastewater treatment.
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
Materials
·
2023
·Vol. 16
·期 12
·4397
·
IF 3.4
Siyuan Yang,Fei Wang,Zhe Zhang,Zhiming Liu,Jiliang Zhang,Kaiyong Jiang
Electromagnetic (EM) wave absorption performance is greatly affected by the microscopic morphology of the absorbing material particles. In this study, a facile and efficient ball-milling method was applied to increase the aspect ratio of particles and prepare flaky carbonyl iron powders (F-CIPs), one of the most readily commercially available absorbing materials. The effect of ball-milling time and rotation speed on the absorption behaviors of the F-CIPs was investigated. The microstructures and compositions of the F-CIPs were determined using scanning electron microscopy (SEM) and X-ray diffraction (XRD). The EM parameters were measured using a vector network analyzer (VNA) in the frequency range of 2–18 GHz. The results indicated that the ball-milled flaky CIPs exhibited a better absorption ability than the raw spherical CIPs. Among all the samples, the sample milled at 200 r/min for 12 h and the sample milled at 300 r/min for 8 h showed remarkable EM parameters. The ball-milling sample with 50 wt.% F-CIPs had a minimum reflection loss peak of −14.04 dB at a thickness of 2 mm and a maximum bandwidth (RL < −7 dB) of 8.43 GHz at a thickness of 2.5 mm, a result that conformed with the transmission line theory. Hence, the ball-milled flaky CIPs were considered to be beneficial for microwave absorption.Keywords:carbonyl iron powders;absorption performance;ball-milling time;ball-milling rotation speed;electromagnetic parameters
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Xiaodong Yang,Lili Wang,Xueqin Shao,Jin Tong,Jinfeng Zhou,Ying Feng,Rui Chen,Qiang Yang,Ye Han,Xizhen Yang,Fangjun Ding,Qingyu Meng,Jian Yu,Andrew R. Zimmerman,Bin Gao
New classes of biosorbents are needed for various environment remediation applications. Thus, a facile and benign approach to synthesize porous biosorbents was developed using acidic or alkaline one-step ball milling of hickory wood biomass (AcBH and AlBH, respectively) without any external heat treatment, and their properties were compared. AcBH and AlBH were richer in O-containing functional groups, had enhanced porous structure and greater ability to remove crystal violet (CV, 476.4 mg g −1 ) and Congo red (CR, 221.8 mg g −1 ) dyes from aqueous solution, respectively, relative to hickory wood ball milled at neutral pH. Freundlich isotherm and pseudo second order kinetic models best fitted CR and CV adsorption onto biosorbents, indicating a mainly surface complexation adsorption mechanism. Further, both sorbents exhibited excellent stability and dye adsorption reusability. These results demonstrate that acidic and alkaline one-step ball milling is a facile and efficient approach for converting wood biomass into environmentally friendly biosorbents.
研究领域:
环境科学
·
材料科学
·
林业工程
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2020
·Vol. 46
·期 16
·24799-24804
·
IF 3.83
Pengfei Pan,Xu Wang,Yaqi Ji,Wumei Dong,Lei Zhang,Ling Wang,Ming Zhang
A simple, efficient and low-cost method to synthesize zirconia nanopowders dispersed with graphene by wet ball milling was reported in this paper. The raw material for ball milling is cheap graphite powder rather than expensive graphene. Graphite powders were exfoliated into graphene nanosheets (GNSs) in the process of ball milling, as a result of strong shear forces and moderate impact forces between graphite powders, milling balls, and ZrO 2 nanoparticles . The mixed powders were milled for 3, 10, 20, 30, 40, and 50 h, respectively. Moreover, the morphology, composition and structure of the mixed powders milled were characterized by X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, Raman spectroscopy , Fourier transform infrared spectroscopy , and field emission transmission electron microscopy . Results showed that the graphite powders were exfoliated effectively, and the GNSs were dispersed uniformly in the zirconia simultaneously. The presence of zirconia nanoparticles significantly improved the efficiency of ball milling exfoliation.
研究领域:
材料科学
·
纳米技术
·
无机非金属材料
·
复合材料
✓ 已验证
DOI
高影响因子
MINERALS ENGINEERING
·
2025
·
IF 5
Guosai Jiang,Ziyuan Liu,Yao Xue,Xiaoguang Zhang,Zhe Tan,Yufeng Wu,De’an Pan
Acid sludge, a hazardous waste from lead (Pb)-zinc (Zn) smelting process, typically contains selenium (Se) and mercury (Hg), both of which have high economic value. Recovering these elements contributes to resource reuse and environmental pollution reduction. However, designing an efficient recovery process for Se and Hg is a key technical challenge in the disposal of Se/Hg-containing acid sludge. In this study, we proposed a highly efficient wet recovery method for Se and Hg, which involves mechanical ball milling pretreatment of acid sludge followed by an oxidizing acid leaching process. Through single-factor experiment and response surface methodology (RSM) optimization, the leaching efficiencies of 99.69 % for Se and 99.64 % for Hg within 11 min were achieved. The thermodynamics and kinetics of the leaching process were thoroughly investigated to elucidate the conversion mechanisms of Se and Hg and the rate-controlling step from chemical reaction. Notably, the mechanical pretreatment significantly enhanced the leaching efficiencies of Se and Hg in less time compared to direct leaching process, owing to the reduced particle size, more scattered distribution and decreased crystallinity. This research offers valuable insights into the efficient leaching of Se and Hg species from acid sludge, potentially addressing the issues of resource wastage and environmental pollution from large stockpiles of acid sludge.
研究领域:
环境科学
·
冶金工程
·
资源回收
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2013
·Vol. 1
·期 12
·3983-3991
·
IF 0
Lina Chong,Jianxin Zou,Xiaoqin Zeng,Wenjiang Ding
In this work, a reversible hydrogen storage composite, 3NaBH4/NdF3, has been prepared using a mechanical milling method. The de-/rehydrogenation properties as well as the mechanisms of reversible hydrogen sorption in the composite were carefully investigated. Based on the pressure–temperature–composition measurements, the de-/rehydrogenation enthalpies of the 3NaBH4/NdF3 composite are determined to be 86.4 kJ mol−1 H2 and −13.2 kJ mol−1 H2, respectively. The onset dehydriding temperature of the composite is determined to be 413 °C in 0.1 MPa Ar atmosphere and can be as low as 80 °C under vacuum conditions. Analyses revealed that NdB6, Nd2H5 and NaF were formed after the decomposition of the composite, which can be hydrogenated to produce NaBH4 and NaNdF4. The formation of NaNdF4 instead of NdF3 in the hydrogenated products is believed to be responsible for the reduced hydrogen storage capacity, while the intermediate formation of B, Nd and NdB4 during dehydrogenation accounts for the asymmetric hydriding/dehydriding behaviors in the 3NaBH4/NdF3 composite.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
CHEMISTRY-A EUROPEAN JOURNAL
·
2021
·Vol. 27
·期 35
·9087-9093
·
IF 5.236
Yongyang Zhu,Hao Zhong,Hui Wang,Liuzhang Ouyang,Jiangwen Liu,Zhenguo Huang,Min Zhu
Graphical A cost-effective way to produce NaBH 4 with high yield by ball milling hydrated borax (Na 2 B 4 O 7 ⋅ 10H 2 O) with cheap Al or Al 88 Si 12 at ambient condition is presented. An effective strategy was developed to facilitate mass transfer during the reaction by introducing NaH to enable the formation of loose NaAlO 2 instead of dense Al 2 O 3 on Al surface, and by using Si as a milling additive that prevents agglomeration and also breaks up passivation layers. A significant obstacle in the large-scale applications of sodium borohydride (NaBH 4 ) for hydrogen storage is its high cost. Herein, we report a new method to synthesize NaBH 4 by ball milling hydrated sodium tetraborate (Na 2 B 4 O 7 ⋅ 10H 2 O) with low-cost Al or Al 88 Si 12 , instead of Na, Mg or Ca. An effective strategy is developed to facilitate mass transfer during the reaction by introducing NaH to enable the formation of NaAlO 2 instead of dense Al 2 O 3 on Al surface, and by using Si as a milling additive to prevent agglomeration and also break up passivation layers. Another advantage of this process is that hydrogen in Na 2 B 4 O 7 ⋅ 10H 2 O serves as a hydrogen source for NaBH 4 generation. Considering the low cost of the starting materials and simplicity in operation, our studies demonstrate the potential of producing NaBH 4 in a more economical way than the commercial process.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2014
·
IF 2.93
Lina Chong,Jianxin Zou,Xiaoqin Zeng,Wenjiang Ding
In this work, the complex hydrogen sorption behaviors in a 3NaBH 4 /HoF 3 composite prepared through mechanical milling were carefully investigated, including the reactions occurred during ball milling and de-/rehydrogenation processes. Different from other rear earth fluorides, the HoF 3 can react with NaBH 4 during ball milling, leading to the formations of Na–Ho–F and Na–Ho–BH 4 complex compounds. The first dehydriding of the 3NaBH 4 /HoF 3 composite can be divided into 4 steps, including the ion exchange between H − and F − , the formation of NaHo(BH 4 ) 4 , the decomposition of NaHo(BH 4 ) 4 and reaction of NaBH 4 with Na–Ho–F compounds. The final products, HoB 4 , HoH 3 and NaF, can be rehydrogenated to generate NaBH 4 and NaHoF 4 with an absorption capacity of 2.3 wt% obtained at 400 °C. Based on the Pressure–Composition–Temperature measurements, the de-/rehydrogenation enthalpies of the 3NaBH 4 /HoF 3 composite are determined to be 88.3 kJ mol −1 H 2 and −27.1 kJ mol −1 H 2 , respectively.
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
Polymers
·
2018
·Vol. 10
·期 3
·282
·
IF 2.935
Qiang Zhang,Xueqin Zhang,Ziyan Zhu,Aiping Zhang,Chunhui Zhang,Xiaoying Wang,Chuanfu Liu
Esterification is a versatile way to produce the derivatives of lignocellulose with developed properties. However, the traditional heterogeneous esterification of lignocellulose suffered from the drawbacks of low efficiency, additional reaction medium and heating. In the present study, an efficient method was developed to produce the functionalized sugarcane bagasse (SCB) by ball milling without any additional solvents and heating. The effects of pulverization time, rotation speed, the kind of linear chain anhydrides, the ratio of anhydrides to SCB, with or without pyridine catalyst and the dosage of catalyst were investigated on weight percent gain (WPG) of SCB esters. The results indicated that the high efficiency of this mechanocatalystic esterification was probably due to the destroyed crystalline structure and the promoted penetration of the esterifying reagent onto SCB bulk caused by ball milling. The maximumWPGof SCB acetate, propionate and butyrate reached 33.3%, 33.6% and 32.4%, respectively. The physicochemical structure of the esterified SCB was characterized with Fourier transform infrared spectra (FT-IR), solid state cross-polarized magic angle spinning13C nuclear magnetic resonance (CP/MAS13C-NMR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). The direct evidence of the esterification occurrence was provided with FT-IR and solid-state CP/MAS13C-NMR. The thermal stability of SCB increased upon the mechanocatalytic esterification. The results implied that the relatively homogeneous modification was achieved with this semi-homogeneous esterification method by ball milling.Keywords:sugarcane bagasse;esterification;ball milling;bio-based materials
研究领域:
生物质化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Songfeng E,Yuan Wang,Yuanming Wang,Jiaming Yang,Junli Ma,Kaiyue Huang,Zhangzi Li,Zhaoqing Lu,Lejia Wang
We discovered that incorporating the Ca 2+ into sodium alginate (SA) solution as ball-milling medium of hexagonal boron nitride ( h -BN) could increase the lateral size of the exfoliated h -BN nanosheets (BNNSs) at least twice those of pure SA solution obtained, which can be owing to the Ca 2+ −induced crosslinking of SA and enhancement of interfacial adhesion forces between SA and h -BN that not only boost the impacting resistance to milling balls but also the exfoliation energy to h -BN. Based on the crucial role of Ca 2+ in h -BN exfoliation, the large-area and small-thickness BNNSs are produced simultaneously with the increased milling speed and Ca 2+ concentration, which can be assembled into highly compact and horizontal oriented structures with aramid nanofibers (ANFs) due to the favorable compatibility, dispersity, and interfacial binding force. This kind of compact and ordered structure enables ANF/BNNS film with high thermal conductivity (TC) since the connective and high-efficiency heat conduction paths, of which the highest TC is 27.57 W⋅m −1 ⋅K -1 . Compared with soft and molecular SA chains, the ANFs show an incredible ability to guide the horizontal orientation of BNNSs for the superior TCs of their composites.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2023
·
IF 3.8
Jianhui Su,Yan Liu,Xiujing Peng,Guoxin Sun,Xuchuan Jiang
Due to the high activation energy barrier and the sporadic nature of nucleation, the temperature required for the transition from cubic dense γ-Al 2 O 3 to tripartite α-Al 2 O 3 is as high as 1100–1200 °C. In this work, a two-step strategy was employed to reduce the phase transformation temperature, and prepare α-Al 2 O 3 particles with good dispersion. As the first step, 10 nm sheet γ-Al 2 O 3 was obtained by ammonium aluminum carbonate (AACH) decomposition, which was more favorable to the crystal transformation in the next ball-milling processing. In the second step, γ-Al 2 O 3 powder with partial α-Al 2 O 3 produced in situ by ball-milling γ-Al 2 O 3 was calcined, and α-Al 2 O 3 nanoparticles were obtained at just 850 °C. The content of the α-Al 2 O 3 is determined by the Rietveld Refine method. The relationship between ball-milling time and α-Al 2 O 3 content was clarified, and the effect of α-Al 2 O 3 content on the transformation temperature and morphology of γ-Al 2 O 3 was discussed. The results showed that the α-Al 2 O 3 content rises with the increase of ball milling time, and spherical α-Al 2 O 3 nanoparticles can be obtained when the α-Al 2 O 3 content is 5 %. The addition of α-Al 2 O 3 seeds reduces the phase transition temperature but agglomeration exists. Our proposed two-step low-temperature calcination strategy is an important method for the preparation of alumina nanoparticles
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
危险品化学品经营许可证（带存储）