JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Chang Li,Yushuang Xu,Wenjun Deng,Na Shen,Yan Chen,Chao Huang,Jinlin Zhu,Runduo Zhu,Wenxia Zou,Rui Li
Among aqueous batteries , the research on the battery employing metal as the anode is still mainly focused on the aqueous zinc-ion battery. Compared with zinc, iron has better stability for reversible deposition, lower cost, and higher specific capacity, which is suitable for aqueous batteries. In this study, an aqueous iron-organic battery is constructed by employing polyaniline as the cathode, Fe plate as the anode, and Fe(CF 3 SO 3 ) 2 as the electrolyte, which demonstrates the hybrid storage mechanism of iron plating/stripping in the anode and transmission of CF 3 SO 3 − in the cathode. The polyaniline-Fe battery delivers a specific capacity of 105.8 mAh g −1 at a current density of 0.05 A g −1 and a stable cycle performance over 5,000 cycles with almost no capacity fading at a current density of 0.2 A g −1 , which provides a new direction for the development of aqueous iron-ion batteries.
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2023
·Vol. 28
·期 14
·5328
·
IF 4.6
Ao Sun,Chenyang Yao,Lifeng Zhang,Yanmin Sun,Jun Nan,Houkai Teng,Jiazhong Zang,Lishan Zhou,Zhenzhong Fan,Qilei Tong
In situ combustion of heavy oil is currently the most suitable thermal method that meets energy consumption and carbon dioxide emission requirements for heavy oil recovery. The combustion catalyst needs to perform multiple roles for application; it should be capable of catalyzing heavy oil combustion at high temperatures, as well as be able to migrate in the geological formation for injection. In this work, a hyperbranched polymer composite nanometal fluid was used as the injection vector for a heavy oil in situ combustion catalyst, which enabled the catalyst to rapidly migrate to the surface of the oil phase in porous media and promoted heavy oil cracking deposition at high temperatures. Platinum (Pt) nanoparticles encapsulated with cetyl-hyperbranched poly(amide-amine) (CPAMAM), with high interfacial activity, were synthesized by a facile phase-transfer method; the resulting material is called Pt@CPAMAM. Pt@CPAMAM has good dispersion, and as an aqueous solution, it can reduce the interfacial tension between heavy oil and water. As a catalyst, it can improve the conversion rate during the pyrolysis of heavy oil in a nitrogen atmosphere. The catalyst structure designed in this study is closer to that exhibited in practical geological formation applications, making it a potential method for preparing catalysts for use in heavy oil in situ combustion to resolve the problem of catalyst migration in the geological formation.Keywords:platinum nanoparticles;hyperbranched polymer;heavy oil;interfacial activity;thermal behavior
✓ 已验证
产品关联
DOI
PubMed
高影响因子
EUROPEAN JOURNAL OF PHARMACEUTICAL SCIENCES
·
2023
·
IF 4.6
Dan Shen,Tingyu Jin,Yin Xiao,Xingyi Zhu,Yunfen Hua
Pazopanib (PZ) is a multikinase inhibitor, which is mainly used in the treatment of soft tissue sarcoma and advanced renal cancer. However, because of its water insolubility, oral bioavailability is poor. At the same time, photo lability and high dose oral administration lead to severe hepatotoxicity, which is limited in clinical application. In this paper, the novel pazopanib-fumarate disodium glycyrrhizinate nanocrystalline micelles are successfully prepared by liquid-assisted ball milling. The prepared cocrystals and nanocrystalline micelle structures are systematically characterized by X-ray diffraction (XRD), differential scanning calorimetry (DSC) and Fourier Transform Infrared Spectrometer (FTIR) analysis. In vitro solubility and dissolution experiments show that the solubility and dissolution of nanocrystalline micelles are significantly improved under different simulated physiological conditions. The accelerated stabilization experiments show that the nanocrystalline micelles have good physical and chemical stability and showed excellent stability in water (Zeta potential was 62.39 mV). In addition, the in vivo bioavailability of nanocrystalline micelles is 3 times higher than that of PZ, and the therapeutic threshold (> 20 μg/mL) is up to 30 h. This new strategy provides a feasible solution to the undesirable properties of PZ.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
·
2022
·
IF 3.752
Hong-fu LIN,Wei WENG,Shui-ping ZHONG,Guan-zhou QIU
High-efficiency recovery of Zn and Pb from silicon-rich zinc leaching residues is realized in a rotary kiln. Characterizations by means of XRD, SEM, EDS and ICP reveal that the leaching residue contains 12.4 wt.% SiO 2 , 16.1 wt.% Zn, and 7.4 wt.% Pb. Thermodynamic analysis shows that metallic vapor of Zn and Pb can be easily generated from the zinc leaching residue at 1150−1250 °C inside the rotary kiln. Viscosities and melting points of 13 slag compositions were analyzed and three slag compositions (47wt.%SiO 2 −23wt.%CaO−30wt.%FeO, 40wt.%SiO 2 − 28wt.%CaO−32wt.%FeO, and 40wt.%SiO 2 −30wt.%CaO−30wt.%FeO) possessed the desirable physical properties, with the melting point and viscosity in the range of 1150−1280 °C and 0.2−0.5 Pa·s, respectively. The industrial tests show that adopting the optimized slag composition can contribute to very high recovery rates of Zn and Pb (97.3% for Zn and 94.5% for Pb), corresponding to slags with very low average contents of Zn and Pb (0.51 wt.% Zn and 0.45 wt.% Pb). The National-Standard leaching tests of the water-quenched slags result in 1.82 mg/L Zn, ~0.01 mg/L Cu, 0.0004 mg/L As, ~0.01 mg/L Cd, 0.08 mg/L Pb, and ~0.02 mg/L Hg in the leachate, verifying the detoxification of the zinc leaching residue at the same time.
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2022
·
IF 11.322
Fucheng Wang,Jinfeng Zhang,Kaixin Sun,Liwei Quan,Jing Wang,Naiqin Zhao,Chunsheng Shi,Shijian Zheng
Interfacial bonding is an important factor affecting the mechanical properties of composites. The interface between the in-situ synthesized ceramic phase and the metal matrix is considered ideal, so little attention is paid to the interfacial modification. In this work, we found that interfacial segregation affects the growth of the MgAlB 4 whisker and the interface of reinforcement and matrix in the composites. Systematic experiments and theoretical calculations indicate Fe solute prefer to segregate at the MgAlB 4 - { 10 1 ‾ 0 } /Al interfaces in in-situ synthesized MgAlB 4 /Al composites, which is helpful to reduce system free energy. On the one hand, Fe segregation induces the whisker coarsening and the formation of planar defects with a sandwich structure formed by a layer of Fe atoms and two layers of Al atoms in coarse-whiskers, on the other hand, it improves the interfacial strength . Although extra Fe aggravates the whisker coarsening, the synergistic reinforcing effect of the whiskers and the extra Fe is greater than the sum of their individual reinforcing effects. This work demonstrates that interfacial segregation can be used to modulate the size of reinforcements and improve interfacial strength.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2022
·
IF 14.224
Zhihua Mo,Zexing Tan,Jialin Liang,Lei Zhang,Chengjian Li,Shaosong Huang,Shuiyu Sun,Yan Sun
In this study, a suite of Fe-rich biochars derived from Fenton-like treated digestate (Fe-BC) were fabricated under different pyrolysis temperatures (300, 500, and 800 °C), which were firstly utilized as peroxymonosulfate (PMS) activators for promoting digestate dewaterability with wide applicability. Results showed that compared to the Fe-BC 300 /Fe-BC 500 + PMS treatments, Fe-BC 800 + PMS process performed superior digestate dewaterability in which specific resistance to filtration reduction and water content reduction improved by > 12.5% and > 130%, respectively, under the optimal conditions. Mechanistic results demonstrated that in Fe-BC 800 + PMS system, HO• and SO 4 • − oxidation played a pivotal role on promoted digestate dewaterability, while HO• and 1 O 2 oxidation was dominated in Fe-BC 300 /Fe-BC 500 + PMS treatments. Fe-BC 800 containing higher Fe and C O contents could efficiently interact with PMS to generate numerous HO• and SO 4 • − via iron cycle. These highly reactive oxygen species proficiently reduced the hydrophilic biopolymers , protein molecules, and amino acids in extracellular polymeric substances, leading to remarkable decrease in particle size, hydrophilicity, adhesion, network strength, and bound water of digestate. Consequently, the flowability and dewaterability of digestate could be significantly enhanced. The cost-benefit result indicated the Fe-BC + PMS treatment possessed desirable reusability, applicability, and economic viability. Collectively, the Fe-BC + PMS is a high-performance and eco-friendly technique for digestate dewatering, which opens a new horizon towards a closed-loop of digestate reutilization.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
WATER AIR AND SOIL POLLUTION
·
2022
·Vol. 233
·期 12
·1-14
·
IF 2.984
Li Weiquan,Li Mingxi,Yin Weizhao,Zhang Weinan,Zhong Jiawei,Li Ping,Deng Hong,Wu Jinhua
The removal of Cr(VI) from groundwater by zero-valent iron (Fe 0 ) and microorganisms under different nutrients and electron-accepting conditions was investigated using continuously-flowed column reactors with an abiotic Fe 0 column as the control. Both abiotic and biotic Fe 0 columns were operated at low and relatively high concentrations of organic substrates (sodium acetate and humic acid) and electron acceptors (nitrate and sulfate). Sodium acetate and humic acid were found to be effective substrates for the biotic Fe 0 system to remove Cr(VI) since microorganisms were able to gain extra reducing capacity from two nutrients and simultaneously avoid the passivation effect of humic acid on Fe 0 by metabolizing it. For nitrate and sulfate, varied influences were observed in the biotic Fe 0 system. The former showed apparent inhibition on Cr(VI) removal as it competed with Cr(VI) for electrons, and the inhibition became more severe while nitrate concentrations increased. Differently, highly reactive minerals such as green rusts and iron sulfide could be generated on the biotic Fe 0 surface under sulfate-reducing condition. They significantly enhanced Cr(VI) removal by providing more adsorptive and reductive sites. Overall, though the biotic Fe 0 column exhibited a longer life-span and higher Cr(VI) removal capacity than the abiotic Fe 0 column, the effects of organic substrates and electron acceptors should still be taken into account when applying biotic Fe 0 systems for Cr(VI)-contaminated groundwater remediation.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Waseem Hayat,Yongqing Zhang,Ze-hua Liu,Xiaodong Du
The high leachability and solubility of methomyl (MET; C 5 H 10 N 2 O 2 S) result in water pollution; while, the polluted water channels can be depolluted by environmentally-friendly and highly-effective degradation technique. Therefore, MET degradation in water by peroxydisulfate (PDS) oxidation was investigated in this study employing the two most naturally-abundant iron species i.e. pyrite (PyR) and zero-valent iron (ZVI) as activators for PDS activation. The experiments were conducted at different activators’ dosage, pollutant concentration, oxidant concentration, initial pH and initial temperature for comparative assessment of degradation-efficiencies of PyR/PDS and ZVI/PDS systems. Using 0.25 g/L PyR/ZVI and 1.0 mmol/L PDS, PyR/PDS and ZVI/PDS systems respectively led to 98.8 % and 97.5 % degradation of 20.0 mg/L MET in 20 min, which became rapid by increasing the activators’ dosage and oxidant concentration in both systems. Further, the degradation has been more than 90.0 % at initial pH 3.0 to 11.0, which slowed with increasing the MET concentration in two systems. The free-radicals quenching analysis showed that degradation by PyR/PDS system was mainly executed by sulfate (SO 4 •− ) and hydroxyl ( • OH) radicals; while, SO 4 •− and super oxide radical anion (O 2 •− ) were dominant during degradation by ZVI/PDS system. PyR/PDS system had low stability and applicability, which supports the employment of ZVI/PDS system for efficient degradation of MET in water.
✓ 已验证
产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2022
·
IF 10.753
Kai He,Shuchen Wang,Yu Liu,Zhenyu Cao,Liwei Yang,Feng He
The application of lignin derivative as modifier is an economical and efficient approach to improve the reactivity of raw material towards pollutant removal . In this study, lignosulfonate modified zero valent iron (LS-ZVI) was firstly prepared by ball-milling method and utilized for Cr(VI) removal under different conditions. The comparative experiments showed that lignosulfonate modification could significantly enhance the Cr(VI) removal by ZVI from <10 % to 100 % within 90 min reaction. Compared to ZVI, the specific surface area of LS-ZVI increased 3.4 times and surface Fe(0) content increased from 3.4 % to 10.5 % due to the surface erosion, resulting in the high-efficient Cr(VI) removal. Solution and solid-phase analyses indicated that Fe(0) played dominated role and generated Fe(II) involved in Cr(VI) removal process, which mainly included rapid adsorption, reduction and co-precipitation. Batch experiments revealed that lower pH conditions were beneficial for Cr(VI) removal and the effect of co-existing ions (Ca 2+ , Mg 2+ , NO 3 − , Cl − , and SO 4 2− ) was negligible except the inhibitory effect of NO 3 − . Moreover, LS-ZVI also exhibited excellent removal performance for Ni(II), Zn(II), and Cd(II) with removal efficiency beyond 96.6 %. Overall, this work provides a feasible approach for enhancing the reactivity of commercial ZVI in the treatment of heavy metal pollution.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CIRP Journal of Manufacturing Science and Technology
·
2022
·
IF 3.56
Meng Guo,Guangjing Huang,Lixia Xi,Donghuai Dai,Dongdong Gu
Laser directed energy deposition (LDED) additive manufacturing is promising in the fabrication of high-performance W-based heavy-alloys which are normally difficult-to-process due to their unique nature such as the extremely high melting point and high ductile-brittle transition temperature. In this work, a novel 95 W heavy alloy modified by nanosized Ni and Fe particles was manufactured by LDED process. The effects of laser power on the formation mechanisms of molten pool were investigated. It was found that a relatively high laser power could promote the complete melting of W powder and formation of regular molten pool morphology. The microstructures of laser-processed W heavy alloy showed columnar grains , cellular grains and equiaxed grains from bottom to top within the molten pool along the building direction. The three-dimensional finite element simulation revealed the temperature gradient ( G ), cooling rate ( C ) and solidification velocity ( S ) within the molten pool were different, which was responsible for the microstructural development. The bulk-form 95 W heavy-alloy part free of defects was produced at the laser power of 1400 W. The optimally processed 95 W heavy-alloy by LDED showed a high average nanohardness of 8.6 GPa and a sound wear performance with a low coefficient of friction (COF) of 0.5. The tensile tests also revealed the achievement of a combination of an excellent tensile strength of 541 MPa and an elongation of 0.99%. This work demonstrated that LDED was able to manufacture high-performance tungsten heavy-alloys in bulk form with outstanding mechanical properties .
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-10
·
IF 17.694
Liu Heming,Xie Ruikuan,Luo Yuting,Cui Zhicheng,Yu Qiangmin,Gao Zhiqiang,Zhang Zhiyuan,Yang Fengning,Kang Xin,Ge Shiyu,Li Shaohai,Gao Xuefeng,Chai Guoliang,Liu Le,Liu Bilu
Constructing stable electrodes which function over long timescales at large current density is essential for the industrial realization and implementation of water electrolysis. However, rapid gas bubble detachment at large current density usually results in peeling-off of electrocatalysts and performance degradation, especially for long term operations. Here we construct a mechanically-stable, all-metal, and highly active CuMo 6 S 8 /Cu electrode by in-situ reaction between MoS 2 and Cu. The Chevrel phase electrode exhibits strong binding at the electrocatalyst-support interface with weak adhesion at electrocatalyst-bubble interface, in addition to fast hydrogen evolution and charge transfer kinetics. These features facilitate the achievement of large current density of 2500 mA cm −2 at a small overpotential of 334 mV which operate stably at 2500 mA cm −2 for over 100 h. In-situ total internal reflection imaging at micrometer level and mechanical tests disclose the relationships of two interfacial forces and performance of electrocatalysts. This dual interfacial engineering strategy can be extended to construct stable and high-performance electrodes for other gas-involving reactions.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Zhou Yin,Giovanni Cagnetta,Jun Huang
The technology of permeable reactive barriers is reliable and economically effective to prevent the spread of pollutants in groundwaters. Yet, it is efficacious only with easily reducible chemicals such as heavy metals and halogenated organics. In the present study, sulfidated zero-valent iron solventless synthesized by ball-milling is proposed as a possible barrier filling for activation of persulfate to achieve sound removal of reduction-resistant organic pollutants (the herbicide atrazine was used as a model pollutant). Preliminary batch experiments demonstrated rapid degradation of atrazine. Continuous experiments executed in columns proved the superior efficiency of sulfidated iron as a persulfate activator, compared to zero-valent iron, in terms of removal of both atrazine and byproducts. Optimal atrazine removal in the column was achieved with 10% sulfidated iron packing, and 9 mM persulfate at a hydraulic residence time of 6.02 h. Under such conditions, the estimated bed length of the reactive barrier for 99% atrazine removal was 8.69 cm. The morphology and surface-active species in the column demonstrated that activation of persulfate mainly occurred at the inlet of the column until the complete usage of the active species. Batch experiments with coexisting ions suggested that they have a minor influence on atrazine removal percentage, while Mg 2+ , Ca 2+ , CO 2− and HCO − had a significant impact on the kinetics of the process. However, analogous column experiments demonstrated that the coexisting ions have a negative influence on both atrazine and its byproducts. The results obtained in this study corroborate the potential application of persulfate-enhanced permeable reactive barriers for in situ removal of atrazine from underground water.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）