JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2019
·Vol. 30
·期 5
·5008-5013
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IF 2.195
Du Liting,Liu Li,Tang Xiaonian,Li Yu,Xu Suyan,Gong Yimin,Yang Yang
Pure Fe 2 O 3 microspheres and Gd 2 O 3 /Fe 2 O 3 loose microspheres were synthesized successfully by a facile hydrothermal method and followed with calcined. The structure and elemental composition were provided by the X-ray powder diffraction (XRD) and energy-dispersive spectroscopy (EDS). Additionally, the morphology was characterized by scanning electron microscope (SEM) and transmission electron microscope (TEM), which show the loose surface state of Gd 2 O 3 /Fe 2 O 3 microspheres. Finally, the property of the gas-sensing sensor based on Gd 2 O 3 /Fe 2 O 3 loose microspheres was investigated systematically. It exhibits ultrahigh sensitivity of 268.6 to 100 ppm acetone at low operating temperature 220 °C, which is 9.8 times higher than the pure Fe 2 O 3 microspheres sensor (27.5/100 ppm). Remarkably, the response of Gd 2 O 3 /Fe 2 O 3 loose microspheres sensor to 0.1 ppm acetone is 2.3. Furthermore, the sensor shows fast response and recovery time (6/36 s) and splendid selectivity to acetone.
研究领域:
材料科学
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传感技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jiaxin Yang,Wenju Tao,Jiaming Li,Jingui He,Zhaowen Wang
Low-cost and efficient recycling methods are crucial for recovering strategic elements from lithium-containing waste electrolytes (LiWE), which are essential for energy storage and environmental protection. This study aims to develop a method for recovering lithium from LiWE through one-step calcination of CaCl 2 . Compared with the traditional high-temperature acidification roasting process, this low-temperature calcification only involves one-step roasting and low-temperature pure water leaching, which avoids the introduction of hazardous reagents such as acid/alkali. The thermodynamic analysis results indicate that the transition temperature of LiF during the calcification roasting process is higher than that of Na 3 AlF 6 . 550 ℃, 2.5 (Ca/Li ratio) and 1.0 h have been proven to be the most suitable roasting conditions. Meanwhile, 75 ℃, 7 mL/g (L/S) and 1.0 h are expected to be the most preferred leaching processes. The recovery rate of lithium exceeds 98 % and maintains a high purity (>99.0 %) of Li 2 CO 3 . The economic benefits of this process have been comprehensively evaluated, with a profit of 2.65 $/kg. Finally, the regenerated LCO prepared from recycled Li 2 CO 3 has been proven to have good electrochemical performance compared to commercial LCO with a capacity exceeding 151 mAh g-1 at 1C, demonstrating the feasibility of energy storage applications. In summary, the low-temperature calcification roasting method has been proven feasible for extracting lithium from LiWE.
研究领域:
材料科学
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环境科学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
ChemistrySelect
·
2025
·Vol. 10
·期 17
·e202500240
·
IF 2
Yuanwei Xiao,Yanyan Du,Xu Huang,Guihong Lan,Bo Xu,Haiyan Qiu
Graphical This study presents a low-temperature sulfuric acid carbonization method to convert jacaranda husk into sulfonated biochar (JSS) with enhanced antibiotic adsorption. JSS exhibits superior adsorption capacities (161.76 mg g −1 for tetracycline, 63.96 mg g −1 for ciprofloxacin) via synergistic mechanisms: electrostatic attraction, π–π interactions, and hydrogen bonding. The material retains > 80% efficiency after five regeneration cycles, offering a sustainable solution for water pollution remediation. In this study, an innovative low-temperature sulfuric acid carbonization method was developed to convert agricultural waste jacaranda husk into high-performance biochar (JSS), which overcomes the problems of surface ash coverage and functional group loss caused by traditional high-temperature pyrolysis (>500 °C). By introducing a sulfonic acid group (-SO₃H) and retaining abundant oxygen-containing functional groups (-OH, -COOH), the adsorption capacity of JSS for tetracycline (TC) and ciprofloxacin (CIP) reached 161.76 and 63.96 mg g −1 , respectively, which was about three times higher than that of conventional pyrolysis biochar (JST). Experiments show that JSS exhibits the best adsorption performance in the pH range of 6–7, and efficient removal is achieved through the synergistic action of electrostatic attraction, π–π interaction, and hydrogen bonding. In addition, the adsorption efficiency of JSS remained above 80% after five regeneration cycles, demonstrating excellent stability and reusability.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2024
·
IF 5.3
Jie Ma,Tao Wang,Wei Hou,Zhenhua Wu,Suling Bao,Dan Wu,Wentao Ma,Yu Zhang
The extraction of crude oil generates a significant volume of stable emulsions that can lead to various adverse effects in industrial extraction processes. Therefore, emulsion demulsification is a crucial step. In this paper, PGDA, a low-temperature W/O demulsifier with double hydrophobic chains, was synthesized from poly(ethylene glycol) diacrylate by a simple low-temperature process. The structure of PGDA was analyzed by FTIR and 1 H NMR, and the demulsification performance was evaluated by a bottle-testing method. The results demonstrated that PGDA, at a concentration of 500 mg/L, achieved a demulsification efficiency of 100 % under low-temperature conditions (45 °C) over a 5-hour period. Furthermore, it also showed good demulsifying performance in wide pH range (6–10) and high salinity (100,000 mg/L). In addition, the possible mechanism of demulsification of PGDA was investigated by zeta potential, interfacial tension, and three-phase contact angle, etc. PGDA showed strong competitive adsorption ability with asphaltenes at the interface. PGDA has the ability to navigate rapidly to the oil–water boundary and displace the native surfactants there, thus destabilizing the emulsion and thus promoting the separation of oil and water. PGDA by virtue of the simple synthesis process, low demulsification temperature and high efficiency are of practical application.
研究领域:
化学工程
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石油工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2024
·
IF 8.3
Tao Jin,Xiling Ye,Zhuo Chen,Shuai Bai,Yining Zhang
Aqueous zinc-ion batteries have attracted attention due to their low cost and high safety. Unfortunately, dendrite growth, hydrogen evolution reactions, cathodic dissolution, and other problems are more serious; not only that, but also the cathodic and anodic materials’ lattices contract when the temperature drops, and charge transfer and solid phase diffusion become slow, seriously aggravating dendrite growth. At present, there are few studies on the low-temperature system, and studies on retaining high specific capacity are even more rare. Herein, ethylene glycol (EG) and manganese sulfate (MSO) are selected as additives, and the manganese vanadate (MVO) cathode is used to find a high-performance solution at low temperature. MVO can provide higher specific capacity and better structural stability than MnO2 to adapt to a low-temperature environment. At the same time, Mn2+ in MSO can produce a cationic shield covering the initial zinc tip at an appropriate concentration to avoid the tip effect and inhibit the dissolution of MVO. EG can not only reduce the freezing point of the electrolyte but also promote the desolvation of [Zn(H2O)6]2+. The synergistic effect of the three elements prevents the dissolution equilibrium of Mn2+ in MVO from fluctuating greatly due to the change of temperature. Therefore, when we use EG@0.2 M MnSO4 + 2 M ZnSO4 (EG + 0.2Mn/2ZSO) electrolyte at −30 °C, the Zn||Zn batteries which used this type of electrolyte can remain 350 h at 1 mA cm–2 without failure. The Zn||Cu batteries can retain 100% Coulombic efficiency after more than 2000 cycles at 0.2 mA cm–2. The Zn||MVO battery can reach 231.13 mA h g–1 at its first cycle, and the capacity retention rate is still above 85% after 1000 cycles, which is higher than that of the existing low-temperature research system.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2021
·
IF 5.706
Jiayu Song,Shengping Wang,Yan Xu,Qingling Liu,Yujun Zhao
Poor catalytic activity and stability are primary defects of traditional Pd/Al 2 O 3 catalysts for the low-temperature methane combustion. Herein, we developed a facile way to synthesize a MgAl-LDHs derived MgAl 2 O 4 spinel with good crystalline lattice and high surface area, which was used as support of Pd-based catalysts. Catalysts with Mg/Al ratio of 1/3 presented the highest methane combustion activity. It was found the well-crystallized MgAl 2 O 4 spinel promoted the dispersion and crystallization of PdO due to the strong interaction between PdO and support, and the electrophilicity and basicity originated from Mg doping suppressed the sintering of PdO particles, leading to the excellent performance of Pd/MgAl3. Moreover, these factors also inhibited the formation of surface OH- species, therefore, improved the water resistance. Such a synthesis strategy of the Pd/Mg x Al y derived from LDHs and the roles of MgAl 2 O 4 spinel could pose some meaningful directions for developing high-efficient Pd-based catalysts for the low-temperature methane combustion.
研究领域:
催化化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
AICHE JOURNAL
·
2022
·Vol. 68
·期 6
·e17664
·
IF 4.167
Yuan Shu,Mengyao Wang,Xiaolan Duan,Dandan Liu,Shize Yang,Pengfei Zhang
Designing methane combustion catalysts operated under low temperature (<400°C) remains a huge challenge, especially for noble-metal–free catalytic systems. With NaCl as a crystalline scaffold, NiO catalyst with abundant oxygen vacancies and an ultra-high–specific surface area of 181 m 2 g −1 is obtained. The mesoporous NiO exhibits outstanding CH 4 combustion performance ( T 90 = 370°C at the weight hourly space velocity (WHSV) = 20,000 mL g −1 h −1 ). X-ray photoelectron spectroscopy (XPS), H 2 -temperature-programmed reduction (TPR), kinetic measurements, and O 18 isotope-labeling experiments together disclose the key role of surface lattice oxygen and reaction mechanism by NiO catalysts. More importantly, the excellent stability of NiO by doping La was obtained (low-temperature thermal stability: 385°C, 400 h, 4 vol% H 2 O).
研究领域:
催化化学
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材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Wenyu Qiu,Yukun Wu,Yichen Wang,Zhiting Yang,Rui Yang,Chenxi Zhang,Yang Hao,Yuying Hao
Hybrid halide perovskite solar cells (PSCs) have enormous potential to provide energy for future space exploration and aerospace due to their unique advantages in harsh environments. Unfortunately, it is challenging to fabricate robust PSCs that are insensitive to low temperatures. This study presented the performance evolution of methylammonium triiodide (MAPbI 3 ) PSCs across a temperature range of 290 to 90 K and highlighted the decisive impact of interfacial defects on the devices’ low-temperature performance. The introduction of polymethyl methacrylate (PMMA) as interface modification layer, efficiently passivated the interface defects, released the interfacial stress, and thus decreased the phase transition temperature. As a result, the PMMA-modified device achieved a maximum efficiency of 22.4% at 90 K which was one of the highest efficiencies reported for MA-based PSCs at low temperatures. Remarkably, the PMMA-modified device retained nearly 100% of initial efficiency after 26 temperature cycling tests between 290 and 90 K, whereas the control device maintained only 62% of initial efficiency. This work demonstrated that interface engineering is a promising strategy for improving the low-temperature performance of PSCs.
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
CHEMICAL PHYSICS LETTERS
·
2023
·
IF 2.8
Bo Li,Mohib Ullah Khan,Cheng Qv,Lin Chen,Ying Xiong,Lixin Zhang,Mingzai Wu
Conventional flexible zinc-air batteries (ZABs) electrolytes are mainly made of hydrogels, and thus can freeze at low temperatures and cause cell failure. Here, we report a gel electrolyte consisting of agar, polyacrylamide and dimethyl sulfoxide with high ionic conductivity (24 mS cm −1 ) at −30 °C. The flexible ZABs based on this gel electrolyte showed good cycling stability (45 h) at −30 °C, which provides a new idea for the development of low-temperature resistant flexible ZABs.
研究领域:
能源材料
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电化学
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2023
·
IF 7.4
Liwei Shen,Tianqi Liu,Huan Li,Shuman Li,Zhijie Hu,Xuebin Jiang,Hanjun Liu,Zejun Zhang,Yuanzhu Mi,Weichu Yu
The separation of oil–water emulsions is a pressing and crucial task due to the significant impact on transportation costs and pipeline corrosion. Currently, commercially available demulsifiers mainly utilize ethylene oxide and propylene oxide as raw materials. However, these demulsifiers involve complex and hazardous production processes, exhibit low demulsification efficiency (DE), and require high temperatures exceeding 60 °C. To address these challenges, this study presents a two-step synthesis method for producing a demulsifier (PDB-C6) that resembles a jellyfish. This demulsifier demonstrates a high DE in demulsification processes, operating at lower temperatures and shorter timeframes. Its hydrophilic head can locate water droplets in the emulsions, while the four hydrophobic tails can assist its rapid migration in the oil phase towards the oil–water interface for demulsification. The demulsifying performance was investigated in two W/O emulsions with different oil contents. Bottle tests showed that the DE of PDB-C6 in a 30% oil content W/O emulsion reached 100% with the dosage of 300 mg/L at 40 °C for 2 h, while the dosage of 400 mg/L for 3 h also achieved 100% of DE in a 70% oil content W/O emulsion. In addition, PDB-C6 had excellent demulsification performance in both high salinity and a wide pH range (2–12). Given its low demulsifier amount, low demulsification temperature, short demulsification time and high DE, PDB-C6 shows promise for wide-ranging applications in the petroleum industry. The impacts of PDB-C6 on the oil–water interface were systematically investigated and its possible demulsification mechanism in W/O emulsions was explored in detail. The findings revealed that PDB-C6 had excellent demulsification performance by rapidly migrating to the oil–water interface where it replaced natural surfactant and formed an unstable composite membrane, ultimately reducing the stability of the emulsion and leading to demulsification.
研究领域:
化学工程
·
石油工程
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Green Energy
·
2024
·
IF 3.1
Jiaping Zhao,Xincheng Cao,Peng Liu,Feng Long,Shiyu Wu,Junming Xu,Jianchun Jiang
The hydrogenation of bio-based oil into biodiesel is a key strategy in reducing reliance on fossil fuels. However, efficient catalysts are needed to enable low-temperature hydrogenation reactions due to the current high-temperature requirement for bio-based oil hydrogenation. Here, bimetallic catalysts Rex-Ru/C for low-temperature hydrogenation of bio-based oils were prepared. The presence of Re oxides (ReOx) in the catalyst enhances the abundance of weak and medium acid sites, thereby facilitating the adsorption of H2. The DFT calculation shows the introduction of Re also improved the adsorption capacity of the catalyst for fatty acid methyl ester and H2. The Re0.25-Ru/C catalyst exhibits superior conversion, selectivity, and recyclability at low temperatures compared to the previously reported catalysts, achieving 100% conversion of methyl stearate with 100% selectivity toward n-heptadecane (C17) and n-octadecane (C18) (reaction conditions: 150°C, 4 h, 2.5 MPa H2). Moreover, the catalyst also shows excellent hydrogenation activity toward various fatty acids or esters, including methyl palmitate, stearic acid, and palmitate at low temperatures. The Re0.25-Ru/C catalyst showed consistent recycling performance over 9 cycles. The decline in catalytic performance of the catalyst was primarily caused by a reduction in ReOx content, resulting in a decrease in acid site concentration. Consequently, there was reduced adsorption of H2 and oil on the catalyst.
研究领域:
催化化学
·
可再生能源
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2025
·
IF 7.5
Xiaowei Wu,Yuqin Li,Zhengquan Yang,Mingyu Peng,Tian Gui,Xiangshu Chen,Hidetoshi Kita
A beta zeolite membrane reactor was first applied to improve conversion on the esterification of oleic acid and n-butanol at low temperature by rapidly removing the by-product water. In the pervaporation (PV)-esterification at low temperature of 353 K, the final conversion of oleic acid was significantly improved to 99.2 % in a short reaction time of 4 h. Even at an incredibly low esterification temperature of 333 K, the conversion of oleic acid reached 95.7 % in 4 h. Besides, the beta zeolite membrane reactor exhibited good hydrothermal and acid stabilities with a high oleic acid conversion (maintained above 99 %) after 5 reaction cycles. Through XRD and SEM characterization, it was found that the membrane kept complete crystal structure. Process intensification through a beta zeolite membrane reactor aided by PV was successfully used to enhance the esterification at low temperature in a short time, which was a promising coupling technology.
研究领域:
化学工程
·
材料科学
✓ 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）