MATERIALS RESEARCH BULLETIN
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2024
·
IF 5.3
Daoyong Lin,Zhifu Liu,Da Li,Jinjun Zhao,Yue Liu,Lei Cao,Guanxiang Ma,Wei Zhao
The Li 2 CO 3 -ammonia-ballmilling synthesis system of Li 4 Ti 5 O 12 (LTO) was optimized and doped Li and O by theirs adjacent elements Mg and F respectively. By adjusting the ballmilling parameter , the distribution of Li and Ti sources, the hydrolysis rate and different nucleophilic / electrophilic hydrolysis path of Ti , and the interaction between Li and Ti species can be effectively controlled. The temperature programmed calcination is beneficial to the formation of the middle state (Li 2 TiO 3 ), obtaining the high quality LTO. Mg and F doping can further optimize the hydrolysis and condensation degree of Ti source, the number of crystal nucleus and the particle size. Therefore, the initial first discharged capability of Mg doped LTO and F doped LTO reach to 152.4 mAh/g and 163.1 mAh/g at 5 C respectively, corresponding 32.4 % and 41.7 % enhancing compared to LTO (115.1 mAh/g). Moreover, the discharge voltage of LTO-Mg decreases from 1.5 V to 1.3 V.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Qi Yao,Yaqi Peng,Min Chen,Yufeng Wang,Jiamin Ding,Binbin Ma,Qionghao Wang,Shengyong Lu
The hydrothermal synthesis of zeolite from fly ash is a time-consuming process with a low conversion rate. Mechanochemical activation is commonly employed as a green and moderate pre-treatment process for surface modification purposes. This study proposes a one-step high efficiency synthesis of zeolite from fly ash using the mechanochemical method. The ball milling modification is conducted simultaneously with the zeolite synthesis process, reducing the overall synthesis time to a significant extent (3 h being determined as the optimal synthesis time). The findings reveal that P1 zeolite can be effectively synthesized under the following conditions: a sodium hydroxide concentration of 2 mol L −1 , a synthesis temperature of 130 °C and a ball milling frequency of 30 Hz. Moreover, the synthesized zeolite exhibits a maximum Cd 2+ adsorption capacity of 130.68 mg/g at pH= 5, following pseudo-second-order kinetics and Langmuir adsorption isotherm . This study not only simplifies the production process and saves energy but also yields zeolite with smaller particle sizes and higher purity. By utilizing the mechanochemical method, the disposal of solid waste can be made environmentally friendly, convenient, and economically beneficial.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2023
·Vol. 30
·期 14
·41910-41922
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IF 5.8
Li Xue,Chen Huichao
The use of mechanochemistry for the remediation of hexachlorobenzene (HCB)-contaminated soil was investigated. Additives such as alkaline materials, neutral materials, natural minerals, and solid waste were studied to explore their effect on the degradation of hexachlorobenzene in soil with single or combined addition by mechanochemical method. The best combination of materials were determined based on HCB destruction percentage by considering the impact on soil quality, the treatment cost, and the availability of additives. Scanning electron microscope (SEM) images and X-ray photoelectron spectrometer (XPS) analysis were conducted for the mechanism studies. The combination of albite and ferric oxide (Fe 3 O 4 ) was found to achieve the best performance in the degradation of HCB with the destruction percentage from 74.3 to 92.5% after 2-h and 6-h reaction, respectively. The developed fracture structure and complex compositions of albite provided abundant reaction sites for mechanochemical degradation of HCB in soil.
研究领域:
环境科学
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土壤修复
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2024
·Vol. 171
·期 10
·107506
·
IF 3.1
Chen-Yang Han,Kun-Zhi Wang,Xin Chen,Zhencheng Chen,Guo-Cheng Han,Xiao-Zhen Feng,Heinz-Bernhard Kraatz
Hydrogen peroxide (H2O2) possesses disinfectant, antiseptic, deodorizing, and cleansing properties. It is commonly used to clean wounds, ulcers, abscessed sinuses, and pus in the ear. Herein, a colorimetric-electrochemical bimodal method for the detection of hydrogen peroxide in serum was constructed, when using a platinum sheet electrode electrocatalyzes H2O2 producing hydroxyl radical, resulting in oxidising TMB and giving a color and current change. After optimaztion, cyclic voltammetry, differential pulse voltammetry and ultraviolet spectrophotometry constituting a colorimetric-electrochemical bimodal method were used to establish four linear relationships within the concentration range of 10.00–1000.00 μM. The limit of detection was found to be 3.33 μM. Additionally, the method's recoveries ranged from 98.88% to 101.10% with a relative standard deviation of no more than 3.70% when using the standard addition method in serum, which indicates its potential for practical medical testing.
研究领域:
分析化学
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医学检测
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生物化学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2017
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IF 6.216
Hongli Wu,Ting Huang,Fei Cao,Qiaogen Zou,Ping Wei,Pingkai Ouyang
Co-production of multi-products is one of the core principles of chemical industry, and it is also an important way to improve the atom economy. Herein, we proposed an approach to co-producing two valuable platform compounds, gluconic acid (GA) and 5-hydroxymethyl furfural (HMF), from sucrose by successive hydrolysis, oxidation and dehydration. In the enzymatic oxidation step, only glucose was oxidized to GA, meanwhile fructose was 100% retained. In the further biphasic dehydration system, only fructose was converted into HMF, whereas GA was maintained with over 95% recovery. After three reactions, the yields of HMF and GA were respectively 42.5% and 48% when the initial feedstock of sucrose was 200 g/L. Two products were easily separated because GA was completely existed in aqueous phase, and HMF was mainly in organic phase. In the whole process, only commercial enzymes and mineral acid were used instead of self-made catalysts.
研究领域:
生物化学
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化工
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry B
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2023
·Vol. 11
·期 19
·4191-4202
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IF 7
Xin Zhang,Jing Guo,Yuanfa Liu,Xinmin Hao,Qiang Yao,Yi Xu,Yafei Guo
In this study, CNFs were provided by an efficient, unmodified, and clean biological method with enzymes and a small amount of alkali, compared to the CNCs with the chemical method involving a strong acid. To provide an accurate targeted selection for future applications, we made the following comparison by analyzing the differences in the preparation method, performance, and application performance of the two nanocelluloses. The result of this study indicated that CNFs and CNCs exhibited a crystallinity index of 58.2 and 83.5%, respectively. CNFs had a mean length (L) of 192.3 nm and a diameter (D) of 1.9 nm, and the average L and D of CNCs reached 123.6 nm and 3.7 nm, respectively. The solution viscosity of CNFs and CNCs reached 7.46 Pa s and 1.91 Pa s, respectively. CNFs and CNCs exhibited zeta potential values of −88.26 mV and −26.40 mV, respectively. The electrospun composite film of PLA–CNFs and PLA–CNCs achieved water contact angles of 138.7 and 34.5°, and the water–oil contact angle reached 24.7 and 30.5°, respectively. The breaking strength of PLA–CNFs and PLA–CNCs reached 96.07 cN and 163.23 cN, and the break elongation followed an order of PLA–CNCs (32.16%) < PLA–CNFs (34.70%). In brief, CNFs can make the composite membrane hydrophobic and with superior extension, and CNCs can make the composite membrane hydrophilic and enhance its strength. Both the composite films conformed to the non-toxic standard, and the PLA–CNFs film more significantly contributed to the cell growth, which is expected to serve as a medical material.
研究领域:
材料科学
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生物学
✓ 已验证
DOI
PubMed
高影响因子
Sustainable Energy & Fuels
·
2019
·Vol. 3
·期 5
·1258-1268
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IF 4.912
Zhongqiang Zhao,Xin Cai,Xiaoyuan Yu,Hongqiang Wang,Qingyu Li,Yueping Fang
In recent years, the development of high-performance and practical silicon–carbon composite anode materials has attracted significant interest for the advancement of new-generation lithium-ion batteries. Herein, using zinc powder as a sacrificial reducing agent, novel core/shell structured silicon/reduced graphene oxide (Si/rGO) hybrids were fabricated via a facile mechanochemical route. In particular, rGO nanosheets were effectively bound to the surfaces of ball-milled silicon particles via an in situ reduction reaction by zinc without any extra surfactants or binders. The well-established rGO coating layer on silicon is crucial and confers electronic conductivity and mechanical integrity to the acquired Si/rGO composites. Owing to the conductive rGO shells, which provided good charge transport properties and also confined the volumetric expansion of active silicon cores upon cycling, the optimal porous Si/rGO composite anode could achieve enhanced reversible capacities and superior cycling stability. After 200 charging–discharging cycles at the current density of 200 mA g−1, the Si/rGO composite still retained the high discharge specific capacity of 767 mA h g−1, and 548 mA h g−1 was retained at 500 mA g−1 after 300 cycles. Moreover, the Si/rGO composite delivered excellent high rate capabilities and cycling durability. Due to its low-cost, environmental-friendliness and scalability, this novel zinc-assisted coating strategy offers an alternative way to produce cost-efficient anodes for rechargeable batteries.
研究领域:
材料科学
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能源技术
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2022
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IF 9.224
Li Cai,Jiao Lin,Ersha Fan,Feng Wu,Renjie Chen,Li Li
This work represents a combination of mechanochemistry with eco-friendly low-cost natural organic acids to recover metal ions from spent lithium-ion battery (LIB) cathode materials. The effects of various reaction parameters on the metal extraction efficiency during the mechanochemical process were investigated. The results showed that under the optimal recovery conditions, that is, 2 mL of H2O2, mass ratio of LiCoO2 (LCO) to alginic acid of 1:10, rotation speed of 500 rpm, and grinding time of 4 h, the recovery efficiencies of Li and Co were 97.58 and 98.59%, respectively. The reaction mechanism of the mechanochemical process was discussed and verified. LCO combines with alginic acid and converts into water-soluble alginate under the action of a mechanical force and a reducing agent, and the metal ions are extracted and recovered in the subsequent water leaching process. In addition, the preliminary environmental and economic evaluation of the recycling process was assessed. The mechanochemical route proposed in this work can achieve green, efficient, and low-cost recovery of cathode scrap, which is a prospective guideline for the future industrial recycling of spent LIBs.
研究领域:
材料科学
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环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2024
·
IF 4.3
Haohao Chen,Mingxuan Sun,Junjie Zhao,Xiangzhi Huang,Huanying Teng,Yu Gao,Ziyang Li,Jun Li
Herein, a collection of novel N-Ti 3 C 2 /BiOCl x Br 1−x composites are fabricated via a simple in-situ sonochemical process. Not only the preparation method for N-Ti 3 C 2 but also the photocatalytic system of N-Ti 3 C 2 /BiOCl x Br 1−x are firstly developed. Multiple characterizations jointly demonstrate the successful fabrication of the composites. Compared to that of BiOCl x Br 1−x , the maximum improvements of 1.16, 1.25 and 1.26 folds are severally confirmed for the photocatalytic degradation of levofloxacin, Rhodamine B, and methylene blue over N-Ti 3 C 2 /BiOCl x Br 1−x composites. In addition, through radicals trapping tests, the primary active species in photocatalytic degradation process are verified to be O 2 − . Moreover, N-Ti 3 C 2 /BiOCl x Br 1−x composites also exhibit 1.18 and 1.14 times enhancements for NH 3 production compared with that of BiOCl x Br 1−x with or without the presence of methanol, respectively. In addition, the maximum improvements of photo-current and photo-potential for BiOCl x Br 1−x are 1.29 and 1.86 folds with the introduction of N-Ti 3 C 2 , respectively. The enhanced photocatalytic activity of N-Ti 3 C 2 /BiOCl x Br 1−x composites is owing to the heightened light absorption, increased specific surface area, and accelerated separation of photoinduced carriers. Additionally, the stable photocatalytic properties of N-Ti 3 C 2 /BiOCl x Br 1−x are confirmed by three photocatalytic recycle tests on pollutant degradation and nitrogen reduction combined with X-ray diffraction patterns before and after three recycles. This study suggests that N-Ti 3 C 2 is an efficient ornamentation for boosting photocatalytic activity of BiOCl x Br 1−x , which can also be expanded as a promising modifier for other semiconductors.
研究领域:
材料科学
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环境科学
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光催化技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
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2022
·
IF 4.778
Zhemin Zou,Jie Wang,Jun Qu,Panfei Dong,Zhigao Xu
The ionic rare earth elements (REEs) was mainly recovered by in-situ leaching process. The concentration of rare earth ions in the leaching solution after long-term leaching process would be too low for traditional precipitation process for REEs recovery. The adsorption process was ideal for the low concentration REEs recovery. In this study, Zn–Al LDH precursor were successfully synthesized by mechanochemical method for the adsorption of REEs (including La − , Eu 3+ and Er 3+ ). X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron energy spectrometer (XPS), and Zeta potential test was applied for adsorption mechanism illustration. The maximum adsorption capacity of the Zn–Al LDH precursor for La 3+ , Eu 3+ and Er 3+ reached 492 mg/g, 346 mg/g, and 1154 mg/g which was significantly higher than other types of adsorbents. The adsorbed REEs on the Zn–Al LDH was hard to be desorbed. The Zn–Al LDH precursor after REEs adsorption could be directly used as high content REEs resources for further process.Therefore, the Zn–Al LDH precursor could be a promising adsorbent for REEs recovery in practical application.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
·
2016
·
IF 2.686
Yanjie Wang,Kiyoshi Nomura,Xin Liu,Alexandre I. Rykov,Changzi Jin,Tao Liu,Junhu Wang
Graphical Room-temperature ferromagnetism (RTFM) was found in 57 Fe-TiO 2 and 57 Fe/Sn-TiO 2 materials prepared by a soft-chemical solution method. Their magnetic properties were found to decrease with increasing degree of 57 Fe doping. Fe 3+ –oxygen vacancy (V O )–Fe 3+ centers are responsible for the observed RTFM. A series of 57 Fe-doped TiO 2 and 57 Fe/Sn-codoped TiO 2 materials were prepared by a soft-chemical solution process with various 57 Fe concentrations from 0.1 to 1.0 at.-% and a fixed Sn concentration of 2.0 at.-%. In this process, an aqueous H 2 O 2 solution reacts with iron and titanium or iron, tin, and titanium precursor compounds to produce peroxopolymetallic acids. The structures and magnetic properties of the products were characterized by magnetic-moment measurements, X-ray diffraction, and Raman and Mössbauer spectroscopy. The results showed that all samples consisted of a rutile phase (and a trace amount of anatase in 57 Fe-TiO 2 ). All samples exhibited hysteresis loops in the M – H curves, which demonstrated the presence of room-temperature ferromagnetism. In addition, their magnetic properties decreased with increasing degree of 57 Fe doping. Oxygen vacancies were considered to be responsible for the presence of ferromagnetism.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Z.W. Zhu,Q.R. Zheng
Comparisons were made between the samples mechanochemically (MOF-5(M)) and solvothermally (MOF-5(S)) prepared for the development of efficient hydrogen storage medium. Synthesized samples were undergone structural characterization as well as adsorption equilibrium measurements of hydrogen at temperature-pressure range 77 K–87 K and 0.1–10 MPa. Grand Canonical Monte Carlo (GCMC) simulations were further conducted to study the behaviors of hydrogen molecules adsorbed on MOF-5. It shows that, besides the advantage of large scale synthesis and a lower cost, mechanochemical method respectively brings about 207% and 90.5% increments in the specific surface area and the maximum excess adsorption capacity of hydrogen at 77 K within pressure range 0–10 MPa. Results also reveal that the crystal within MOF-5(M) is regular and distributing uniformly with a mean size only one tenth of that of the MOF-5(S); at 77 K within pressure range 0–10 MPa, Toth equation can predict the adsorption equilibrium data of hydrogen on two MOF-5 samples with a mean relative error less than 1.5%. It suggests that MOF-5(M) is more promising for hydrogen storage by adsorption for practical applications.
研究领域:
材料科学
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能源研究
✓ 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）