Sustainable Materials and Technologies
·
2025
·
IF 9.2
Weinan Dong,Xuehong Qiu,Weisong Zhao,Bao Guo,Kaixi Jiang
In zinc hydrometallurgical plant, neutralizing precipitation and the subsequent dissolution are implemented to enrich scattering metals, Gallium (Ga) and Indium (In), and Cu from zinc leaching solution, facilitating further extraction and separation of Ga/In and others. The formation of jarosite presents both challenges and opportunities for Ga/In extraction, as Ga/In can substitute Fe within the jarosite structure. In this work, the evolution of the Ga/In occurrence state, especially its relationship with jarosite was investigated and the role of Fe/K/Pb was emphasized. Results show that jarosite formation is inevitable at pH 1–2, with K-jarosite forming kinetically faster than Pb-jarosite. By supplying sufficient K, precipitation rates reached 95.7 % for Ga and 98.1 % for In at pH 2 with little Cu/Ge loss. Eventually, a more appropriate and efficient flowsheet for recovery of scattering metals and Cu from zinc leaching solution is recommended, providing a practical framework comprehensive utilization in zinc hydrometallurgy.
研究领域:
冶金学
·
环境科学
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产品关联
DOI
高影响因子
Chemical Science
·
2024
·Vol. 16
·期 1
·425-429
·
IF 7.6
Ang Li,Ziqi Wang,Yunhua Xu
A novel buckled-layer K1.39Mn3O6 cathode was synthesized, featuring P2-oxygen stacking and P3-K sites. The presence of two independent manganese sites significantly influences the charge distribution and diffusion pathways of potassium ions during the charge and discharge processes, resulting in exceptional electrochemical performance. A reversible capacity of 105 mA h g−1 at 100 mA g−1 and remarkable rate capability of 70 mA h g−1 at 1 A g−1 were achieved, surpassing those of most previously reported layered transition metal oxide cathodes. The findings facilitate the development of innovative cathode materials.
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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无机化学
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固态化学
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DOI
高影响因子
Pharmacognosy Magazine
·
2024
·
IF 0.6
Huijuan Yang,Hailong Li,Yuxin Liu,Jinrui Jiang,Mei Hai,Cong Li,Zhiqiang Hu,Ru Zhou
Background: The purpose of this study was to evaluate the effect of 18β-glycyrrhetinic acid (18β-GA) on isolated rat pulmonary artery vascular rings as well as the mechanism that lies behind the diastolic effects of this compound.Methods: To examine the effects of various doses of 18β-GA on resting normal vascular rings, we used isolated rat pulmonary artery vascular rings. The isolated rat pulmonary artery vascular ring was precontracted with phenylephrine (PE) and potassium chloride solution (KCl), which allowed for the observation of the diastolic effects of 18β-GA, as well as the effects of various concentrations of 18β-GA on blocking the four potassium channels of glibenclamide, barium chloride (BaCl2), tetraethylamine (TEA), or 4-aminopyridine; the impact of various 18β-GA concentrations on the pulmonary artery vasodilation effect pre-use of the nitric oxide synthase inhibitors l-nitroarginine methyl ester and indomethacin.Results: It was shown that 18β-GA has concentration-dependent diastolic effects on isolated rat pulmonary vascular rings that have been precontracted with PE and KCl but it has no effect on resting isolated thoracic aortic vascular rings.Conclusion: The two Kir and Kv channels may be connected to the endothelium-dependent vasodilation mechanism of 18β-GA.
研究领域:
药理学
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心血管研究
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分子生物学
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DOI
高影响因子
Energy Storage Materials
·
2021
·
IF 17.789
Leqing Deng,Meiying Feng,Ruiting Wang,Yusi Yang,Xiaogang Niu,Juan Zhang,Lulu Tan,Jianwen Zhang,Yifan Chen,Liang Zeng,Yujie Zhu,Lin Guo
Potassium-ion batteries (KIBs) are attractive electrochemical energy storage technologies because of their low cost and high energy density . Currently, the reported cathode candidates for KIBs are all limited to the intercalation-type materials. The working principles of these materials all involve the repeated intercalation-deintercalation of bulky K-ions in the ionically-bonded rigid frameworks, which often results in sluggish reaction kinetics, irreversible structural deformation, and poor cycling stability. Here, a low-cost conversion-type material, potassium iodide (KI), is proposed as a promising cathode candidate for KIBs. It is revealed that the depotassiation-potassiation of KI proceeds via a dissolution-precipitation reaction process involving the highly soluble KI 3 intermediate, leading to the shuttle effect and capacity decay. Susequently, a simple strategy combining electrolyte modulation with separator modification is adopted to effectively enhance the electrochemical performance of KI, leading to an impressive capacity retention of 95.5% after 550 cycles. The present study may shed some light on further exploration of high-performance electrode materials based on dissolution-precipitation reaction mechanism for the emerging KIBs.
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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产品关联
DOI
高影响因子
Small Methods
·
2023
·Vol. 7
·期 8
·2201525
·
IF 12.4
Xue Tian,Peng Zhang,Yizhi Liao,Razium A. Soomro,Bin Xu
Antimony-based anode materials are recognized for their high potassium storage capacities and appropriate operating potentials. However, the large volume expansion of Sb during the potassiation/depotassiation process, which results in a quick capacity decay, severely limits its practical application in potassium-ion batteries (PIBs). Here, a carbon-coated Sb/MXene heterostructure composite (CSM) is synthesized by adsorption of Sb 3+ on MXene nanosheets via Sb-O-Ti bonds followed by carbothermic reduction to construct dual-confined MXene@carbon conductive framework capable of withstanding high volume expansion of Sb and conducive to enabling accelerated electron transfer kinetics. The CSM composite, particularly CSM-700, when configured as an anode for PIBs, realized high capacity (484.4 mAh g −1 at 0.1 A g −1 ), an ultra-stable cycling performance with a high reversible capacity of 435.9 mAh g −1 at 0.1 A g −1 after 100 cycles corresponding to a capacity retention rate of 90.0%, and superior rate performance of 323.0 mAh g −1 at 1 A g −1 . The proposed strategy offers a simple route to construct high-performance Sb-based anodes for advanced PIBs.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2022
·
IF 4.831
Min Shen,Tingting Pan,Juewei Ning,Fangyuan Sun,Mengyu Deng,Jianxiang Liao,Fengyu Su,Yanqing Tian
The concentration of potassium ion is an important indicator for human health, and its abnormality is often accompanied by various diseases. However, most tools currently used to study potassium ion transport are low throughput. Herein, we reported a new K + fluorescent nanoprobe CP1-KS with high selectivity and sensitivity to K + (fluorescence enhanced factor was up to 9.91 at 20 mM K + ). The polymeric fluorescent probe CP1-KS was composed of the small-molecular K + indicator KS and amphiphilic copolymer CP1. This sensor can be easily and uniformly dispersed in cell culture medium and is suitable for high throughput analysis. To assess the utility of the probe CP1-KS in biological field, this probe was employed as an extracellular fluorescent probe to monitor the efflux of K + from cells ( E coli , B. Subtilis 168, Hela and MCF-7 cells) under various stimulation including lysozyme, nigericin, digitonin, and ATP. Results demonstrated that CP1-KS is an effective analysis tool for extracellular K + concentration. We believe that the nanoprobe has great potential in antibacterial drug screening, K + ionophore function, K + channel activity, cell membrane permeability analysis or other K + related field in the future.
研究领域:
生物技术
·
细胞生物学
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药理学
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分析化学
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产品关联
DOI
PubMed
高影响因子
Small
·
2021
·Vol. 17
·期 6
·2006824
·
IF 13.281
Bochao Chen,Lizhuang Yang,Xiangren Bai,Qingzhao Wu,Ming Liang,Yuxuan Wang,Naiqin Zhao,Chunsheng Shi,Baozeng Zhou,Chunnian He
In this work, the core-shelled Sb@Sb 2 O 3 heterostructure encapsulated in 3D N-doped carbon hollow-spheres is fabricated by spray-drying combined with heat treatment. The novel core-shelled heterostructures of Sb@Sb 2 O 3 possess a mass of heterointerfaces, which formed spontaneously at the core-shell contact via annealing oxidation and can promote the rapid Na + /K + transfer. The density functional theory calculations revealed the mechanism and significance of Na/K-storage for the core-shelled Sb@Sb 2 O 3 heterostructure, which validated that the coupling between the high-conductivity of Sb and the stability of Sb 2 O 3 can relieve the shortcomings of the individual building blocks, thereby enhancing the Na/K-storage capacity. Furthermore, the core-shell structure embedded in the 3D carbon framework with robust structure can further increase the electrode mechanical strength and thus buffer the severe volume changes upon cycling. As a result, such composite architecture exhibited a high specific capacity of ≈573 mA h g −1 for sodium-ion battery (SIB) anode and ≈474 mA h g −1 for potassium-ion battery (PIB) anode at 100 mA g −1 , and superior rate performance (302 mA h g −1 at 30 A g −1 for SIB anode, while 239 mA h g −1 at 5 A g −1 for PIB anode).
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
PubMed
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2021
·
IF 7.267
Wenjuan Qiu,Di Wang,Shuangfeng Wang
To manipulate the melting temperature of phase change material for more flexible match with practical applications, two eutectic mixtures of BHO (barium hydroxide octahydrate)-KCl and BHO-KNO 3 were investigated as novel binary inorganic eutectic system in this study. Given that the latent heat of BHO-KNO 3 eutectic mixture was higher than that of BHO-KCl eutectic mixture, then BHO-KNO 3 /EG (expanded graphite) composite phase change material (CPCM) with high thermal conductivity was fabricated by melting impregnation method. The thermal properties and performance were assessed using differential scanning calorimeter , thermogravimetry analyzer and thermal conductivity test. The crystalline structure and morphology were revealed by X-ray diffraction and scanning electron microscopy. These results revealed that the two eutectic mixtures still possessed high latent heat more than 200J/g when containing 10 wt% KCl and 12 wt% KNO 3 , respectively. In light of the similar melting temperatures of the two eutectic mixtures, it could be concluded that melting point altering was related to K + . It was worth noting that for BHO-KNO 3 /EG composite phase change material, EG not only improved the thermal conductivity up to 7.27 W•m -1 •K -1 as an excellent heat transfer enhancement filler, but also reduced the supercooling degree by 7.6 °C as an effective nucleation-site provider.
研究领域:
材料科学
·
热能工程
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DOI
高影响因子
Small
·
2023
·Vol. 19
·期 28
·2207080
·
IF 13.3
Wenli Shu,Meng Huang,Lishan Geng,Fan Qiao,Xuanpeng Wang
Prussian blue analogs (PBAs) are promising cathode materials for potassium-ion batteries (KIBs) owing to their large open framework structure. As the K + migration rate and storage sites rely highly on the periodic lattice arrangement, it is rather important to guarantee the high crystallinity of PBAs. Herein, highly crystalline K 2 Fe[Fe(CN) 6 ] (KFeHCF-E) is synthesized by coprecipitation, adopting the ethylenediaminetetraacetic acid dipotassium salt as a chelating agent. As a result, an excellent rate capability and ultra-long lifespan (5000 cycles at 100 mA g −1 with 61.3% capacity maintenance) are achieved when tested in KIBs. The highest K + migration rate of 10 −9 cm 2 s −1 in the bulk phase is determined by the galvanostatic intermittent titration technique. Remarkably, the robust lattice structure and reversible solid-phase K + storage mechanism of KFeHCF-E are proved by in situ XRD. This work offers a simple crystallinity optimization method for developing high-performance PBAs cathode materials in advanced KIBs.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
·
纳米材料
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DOI
高影响因子
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
·
2023
·Vol. 55
·期 1
·128-143
·
IF 3
Guo Lei,Yin Huayi,Gao Shuaibo,Wang Shiyu,Du Kaifa,Shi Hao,Wang Dihua
Potassium (K) cannot be produced by molten-salt electrolysis due to its high vapor pressure and erosion of the graphite anode by K. To overcome this problem, a liquid tin (Sn) electrode was employed to enable the electrolysis by accommodating K in the form of K-Sn alloy that can be separated into K gas and Sn by a following distillation approach. The so-called electrolysis-distillation (ED) approach was conducted in molten K 2 CO 3 -KCl along with a nickel (Ni)-based inert oxygen-evolution anode at 150 to 700 mA/cm 2 at 700 °C. The K-Sn alloys were obtained with a current efficiency of >70 pct at 350 mA/cm 2 without harmful chlorine gas (Cl 2 ) generation, and the chemical diffusion coefficient of K in liquid Sn is ~ 5.21×10 −5 cm 2 /s. Moreover, the Ni-based alloy inert anode was stably served for over 100 hours. The vacuum distillation was conducted at 650 °C for 90 minutes to obtain K metal with a purity of 99.99 pct and a recovery rate of 93.5 pct. Therefore, the ED approach developed here is an efficient and clean route to produce K metal.
研究领域:
无机化学
·
材料科学
·
冶金工程
·
电化学
·
能源化学
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DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2014
·
IF 2.613
Chengyun Gao,Minhua Zhang,Zhongyi Jiang,Jiayou Liao,Xianmei Xie,Tinghong Huang,Jing Zhao,Jinshuan Bai,Fusheng Pan
Novel polymer–inorganic hybrid membrane was prepared by incorporating potassium montmorillonite (K + MMT) into chitosan (CS) for the dehydration of water–acetone mixture. The morphology, chemical and physical structure, as well as the hydrophilicity were characterized. The results showed that MMT uniformly dispersed in the chitosan matrix, formed hydrogen bonds with chitosan, and enhanced the thermal stability of the film. The membrane doped with 10 wt% of K + MMT exhibited the highest performance with separation factor of 2200, which was almost 8 times higher than 249 of pristine CS membrane at 50 °C for 5 wt% of water in the feed. The results suggested that the ionized water channel constructed by MMT intergallery in the hybrid membrane could greatly enhance the separation factor of CS membrane. Moreover, a plausible model for water transportation in the CS-K + MMT hybrid membranes was proposed. The results proved that K + MMT had a potential prospect in application for pervaporation .
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Lei Yang,Weina Jiang,Xinyu Wang,Wancheng Ren,Huanlei Wang
Structural design and heteroatom doping of hard carbon are crucial strategies for enhancing their potassium-ion storage performance. Herein, fluorine-doped hollow porous hard carbon spheres (FHCS) are synthesized via an in-situ template coupled with fluorination strategy. The hollows carbon spherical architecture of FHCS provides abundant porosity and defects for potassium-ion adsorption while effectively mitigating volume expansion during K + insertion/extraction. Moreover, the high-content doping of fluorine element further increases the defect density of FHCS. These characteristics guarantee that the FHCS anode exhibits a predominantly adsorption-driven K + storage mechanism, contributing 81.8 % of the total capacity at 1.0 mV s −1 . As a result, the FHCS anode delivers exceptional reversible capacity (381 mAh g −1 at 0.1 A g −1 ), outstanding rate capability (194 mAh g −1 at 10 A g −1 ), and remarkable cycling stability of 83.8 % capacity retention after 3000 cycles. Furthermore, the potassium-ion hybrid capacitor assembled with FHCS anode exhibits high energy density (104 Wh kg −1 ). This study provides an effective strategy for the rational design of hard carbon and the advancement of high-performance K + storage.
研究领域:
材料科学
·
电化学储能
·
纳米材料
·
能源化学
·
固态离子学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）