SEPARATION AND PURIFICATION TECHNOLOGY
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2024
·
IF 8.1
Jiaxin Yang,Wenju Tao,Jiaming Li,Lingyu Kong,Shaohua Wu,Jingui He,Zhaoshun Liu,Yu Sun,Chao Fan,Zhaowen Wang
Low-cost and environmentally friendly recycling methods can incorporate strategic elements from discarded lithium-containing aluminum electrolytes (LiAE), which is crucial for alleviating resource shortages and environmental footprint. This study aims to develop a method for the comprehensive utilization of LiAE through low-temperature leaching of calcification. Unlike traditional high-temperature acidification roasting/ transformation processes (320–850 °C), the calcification leaching method only involves one-step leaching and avoids high heat energy consumption. Besides, this low-temperature calcification method chemically destroys the crystal structure of metal fluorides (Li, Na, K, etc.), ensuring a high leaching rate while ensuring an alkaline environment for lithium extraction from the leaching solution without additional alkaline neutralization. The lithium extraction rate exceeds 96 %, with high-purity Li 2 CO 3 and NaOH prepared. The CaCO 3 produced by decalcification has the potential for recycling (in the form of CaO after calcination). Meanwhile, the effects of operating temperature, mass ratio of CaO to LiAE, liquid–solid ratio, and leaching time on the calcium leaching reaction were systematically studied. The economic benefits and creative evaluation of the process were evaluated. Finally, the regenerated LCO prepared from recycled Li 2 CO 3 has been proven to have good electrochemical performance compared to commercial LCO, demonstrating the feasibility of energy storage application. In summary, the comprehensive utilization of LiAE by the calcium leaching method has been proven to be feasible.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Daofan Ma,Hao Jiang,Guangwei Wang,Youguang Ma,Chunying Zhu,Xiangyang Tang
A novel droplet separation method was proposed by using an array protrusion microchannel, which could divert droplets of different sizes into designated branch channels. The performance and mechanism of droplet sieving were investigated. In this work, three distinct flow patterns were obtained: partial sieving, complete sieving, and main drop loss regimes. The influences of droplet length and operation conditions on the sieving efficiency were studied systematically. It was found that, in the partial sieving flow pattern, the increase of small droplet diameter is not conducive to sieving, and there exists a critical diameter of the small droplet for complete sieving under a constant main droplet size, which relies primarily on the array protrusion height. The operating range of the complete sieving flow pattern extends when increasing the main droplet size, and the critical capillary number for evolving into the main droplet loss flow pattern rises. The sieving efficiency increases with the flow rate of the continuous phase in the regulating channel while decreasing with that in the main channel.
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ORGANIC ELECTRONICS
·
2025
·
IF 2.6
Zimu Li,Chunli Jiang,Chunhua Luo,Hechun Lin,Xiaodong Tang,Hui Peng
To address the challenges posed by the rapid development of artificial intelligence and big data, various artificial synaptic devices have been developed to overcome the limitations of traditional computing systems. In this study, a two-terminal device using a conducting polymer, poly(hexylthiophene) (P3HT), and a molecular ferroelectric, diisopropylammonium bromide (DIPAB), is fabricated. The incorporation of the ferroelectric layer not only establishes an energy barrier for charge carriers generated by light pulses in the P3HT layer but also allows the device's response to be modulated by altering the ferroelectric polarization state of DIPAB. This device successfully simulates some basic biological synaptic functions by modulating light stimuli. Furthermore, the light logic functions of “AND” and “OR” are realized by using light pulses with different wavelengths, as well as the simulation of associative learning. The device is used to recognize MNIST handwritten digits based on a convolutional neural network (CNN), achieving a recognition accuracy of over 90 %. These results highlight the device's potential for neuromorphic computing.
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Small
·
2024
·
IF 13
Zhisong Geng,Yingqi Sun,Qing Zhang,Shao-Peng Shen,Liang Zhang,Jin-Chi Zheng,Yuan Luo,Yongzheng Shi,Zhe Chen
In response to the critical challenges of interfacial impedance and volumetric changes in Li (1+x) Al x Ti (2‑x) (PO 4 ) 3 (LATP)-based lithium metal batteries, an elastomeric lithium-conducting interlayer fabricates from fluorinated hydrogenated nitrile butadiene rubber (F-HNBR) matrix is introduced herein. Owing to the vulcanization, vapor-phase fluorination, and plasticization processes, the lithium-conducting interlayer exhibits a high elasticity of 423%, exceptional fatigue resistance (10 000 compression cycles), superior ionic conductivity of 6.3 × 10 −4 S cm −1 , and favorable lithiophilicity, rendering it an ideal buffer layer. By integrating the F-HNBR interlayer, the LATP-based lithium symmetric cells demonstrate an extended cycle life of up to 1600 h at 0.1 mA cm −2 and can also endure deep charge/discharge cycles (0.5 mAh cm −2 ) for the same duration. Furthermore, the corresponding lithium metal full cells achieve 500 cycles at 0.5 C with 98.3% capacity retention and enable a high-mass-loading cathode of 11.1 mg cm −2 to operate at room temperature.
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Acta Biomaterialia
·
2024
·
IF 9.4
Xianchi Zhou,Wenzhong Cao,Yongcheng Chen,Zihao Zhu,Yuxian Lai,Zuolong Liu,Fan Jia,Zhouyu Lu,Haijie Han,Ke Yao,Youxiang Wang,Jian Ji,Peng Zhang
Polymeric elastomers are widely utilized in implantable biomedical devices. Nevertheless, the implantation of these elastomers can provoke a robust foreign body response (FBR), leading to the rejection of foreign implants and consequently reducing their effectiveness in vivo. Building effective anti-FBR coatings on those implants remains challenging. Herein, we introduce a coating-free elastomer with superior immunocompatibility. A super-hydrophilic anti-fouling zwitterionic layer can be generated in situ on the surface of the elastomer through a simple chemical trigger. This elastomer can repel the adsorption of proteins, as well as the adhesion of cells, platelets, and diverse microbes. The elastomer elicited negligible inflammatory responses after subcutaneous implantation in rodents for 2 weeks. No apparent fibrotic capsule formation was observed surrounding the elastomer after 6 months in rodents. Continuous subcutaneous insulin infusion (CSII) catheters constructed from the elastomer demonstrated prolonged longevity and performance compared to commercial catheters, indicating its great potential for enhancing and extending the performance of various implantable biomedical devices by effectively attenuating local immune responses. Statement of significance The foreign body response remains a significant challenge for implants. Complicated coating procedures are usually needed to construct anti-fibrotic coatings on implantable elastomers. Herein, a coating-free elastomer with superior immunocompatibility was achieved using a zwitterionic monomer derivative. A pure zwitterionic layer can be generated on the elastomer surface through a simple chemical trigger. This elastomer significantly reduces protein adsorption, cell and bacterial adhesion, and platelet activation, leading to minimal fibrotic capsule formation even after six months of subcutaneous implantation in rodents. CSII catheters constructed from the PQCBE-H elastomer demonstrated prolonged longevity and performance compared to commercial catheters, highlighting the significant potential of PQCBE-H elastomers for enhancing and extending the performance of various implantable biomedical devices.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2024
·
IF 3.8
Li Chenjia,Liao Qi,Wang Rui,Zhang Xinping,Ma Mengyang,Liu Yonghong,Xiao Lei,Jiao Ying,Wang Nan
The scourge of drug addiction and abuse poses a significant challenge to society. Opioid drugs acting on μ-opioid receptor (OPRM1) make it one of the pivotal targets for drug addiction. In the past decade, sewage analysis has become a prevalent method of drug monitoring. However, traditional methods of detecting drugs in sewage are cumbersome, and rapid detection methods are relatively lacking. To address this, an innovative OPRM1-SNAP-tag/CMC method to directly identify drug components in sewage was established. Cell membrane chromatography (CMC) is an affinity chromatography technique which effectively detects receptor affinity substances. Cells constructed with high expression of specific receptor could be used to screen for compounds acting on the receptor. CMC based on OPRM1 provides a potentially convenient and effective tool for the detection of targeted drug components in sewage. In this study, the selectivity, reproducibility, column lifetime, and carryover of the CMC column had been assessed. Initially, we eluted the collected domestic sewage with methanol and acetonitrile, and the retention peaks were observed on the CMC system. Subsequently, without any preliminary sample preparation, we directly injected filtered samples of suspicious sewage into the OPRM1-SNAP-tag/CMC system, where we observed retention peaks as well. The retained components were further identified as morphine by using UPLC-MS/MS. In conclusion, the OPRM1-SNAP-tag/CMC method stands out as a reliable and robust model for the detection of drug components in sewage. It provides a valuable analytical tool for frontline drug control efforts, enhancing our capacity to monitor and mitigate the impact of drug abuse on society. Graphical Abstract
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ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Zhonghua Yang,Zishuo Zhang,Tao Zhou,Nuo Yu,Rouhui Yu,Xiangheng Du,Xiaowen Bai,Zhenyu Miao,Liang Wu,Shaowu Pan,Meifang Zhu
The electrophysiological interface is essential for understanding electrical activities within biological organisms and human-machine interaction. However, traditional preformed bioelectrodes show insufficient interface contact with hairy and irregular skin, causing signal attenuation and distortion. Here, an on-skin-formed silk protein bioelectrode is reported with a conformable and robust interface, achieving a high signal-to-noise ratio for electromyographic signals, showing up to a 38.9% increase compared to traditional ones. The fluid-gel transition of silk protein is induced by a gelling agent composed of ethanol and sodium alginate, leading to a conformable and seamless interface with hairy and irregular human skin, thus resulting in a high signal-to-noise ratio. The developed bioelectrode can record electrophysiological signals stably, even underwater. Additionally, human-machine interaction using electromyographic signals is designed to precisely control the model car's motion trajectory. This work presents an effective method for developing a seamless and conformable electrophysiological interface in bioelectronics.
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ACS Applied Nano Materials
·
2025
·
IF 5.5
Suyao Yin,Denver P. Linklater,Zheyu Li,Shuai He,Zechang Li,Shuai Xiang,Zenglian Zong,Dongmei Li,Liping Wen,Xu Shi,Saulius Juodkazis,Kai Sun,Elena P. Ivanova,Lei Jiang
Phototherapy treatment, as an alternative to antibiotic therapy, promises to be a noninvasive strategy to treat bacterial infections with a low likelihood of inducing bacterial resistance. However, the prolonged high temperature induced by photothermal therapy (PTT) and the limited reactive oxygen species (ROS) yield generated by photodynamic therapy (PDT) still limit clinical application. Here, we overcome the limitations of current PTT and PDT technologies through the effect of the red-shifted local surface plasmon resonance (LSPR) and oxygen vacancies to synthesize an indocyanine green-decorated gold nanoparticle/manganese dioxide (APIM) nanocomposite, improving photothermal stability and ROS generation. Under 808 nm laser irradiation, APIM nanocomposites achieved antibacterial efficiencies of up to 99.9% against Pseudomonas aeruginosa, Staphylococcus aureus, and Escherichia coli and 99% against tetracycline-resistant E. coli EIEC. Furthermore, the near-infrared (NIR)-mediated APIM nanocomposite could effectively treat S. aureus-infected wound in vivo without marked toxicity. Overall, synergistic PTT and PDT utilizing the APIM nanocomposite may provide a promising treatment for skin wound infection.
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NANOTECHNOLOGY
·
2015
·Vol. 26
·期 49
·495102
·
IF 3.821
Ming-Hao Yao,Jie Yang,Ji-Tao Song,Lin Zhang,Bi-Yun Fang,Dong-Hui Zhao,Rui-Xue Xia,Rui-Mei Jin,Yuan-Di Zhao,Bo Liu
Quantum dot (QD)–polypeptide probes have been developed through the specific metal-affinity interaction between polypeptides appended with N-terminal polyhistidine sequences and CdSe/ZnS core–shell QDs. The size and charge of a QD–polypeptide can be tuned by using different coiled-coil polypeptides. Compared to glutathione-capped QDs (QD–GSH), QD–polypeptide probes showed an approximately two- to three-fold luminescence increase, and the luminescence increase was not obviously related to the charge of the polypeptide. QD–polypeptide probes with different charge have a great effect on nonspecific cellular uptake. QD–polypeptide probes with negative charge exhibited lower nonspecific cellular uptake in comparison to the QD–GSH, while positively charged QD–polypeptide probes presented higher cellular uptake than the QD–GSH. A targeted QD–ARGD probe can obviously increase targeted cellular uptake in αvβ3 overexpressing HeLa cells compared to QD–A. In addition, QD–polypeptide probes showed lower in vitro cytotoxicity compared to the original QDs. These results demonstrate that these QD–polypeptide probes with high specific cellular uptake, high fluorescence intensity and low background noise are expected to have great potential applications in targeted cell imaging.
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ANALYST
·
2015
·Vol. 141
·期 3
·1077-1082
·
IF 4.107
Xiuyun Wang,Min Xi,Mengmeng Guo,Fangmeng Sheng,Guang Xiao,Shuo Wu,Shunichi Uchiyama,Hiroaki Matsuura
In this contribution, a very simple and reliable strategy based on the easy modification of a glassy carbon electrode (GCE) by pre-electrolyzing GCE in ammonium carbamate aqueous solution was employed for the simultaneous determination of hydroquinone (HQ) and catechol (CC). Compared with bare GCE, the incorporation of nitrogen into the GCE surface structure improved the electrocatalytic properties of GCE towards the electro-oxidation of HQ and CC. The nitrogen-introduced GCE (N-GCE) was evaluated for the simultaneous detection of HQ and CC and the linear ranges for HQ and CC were both from 5 to 260 μM. Their detection limits were both evaluated to be 0.2 μM (S/N = 3). The present method was applied for the determination of HQ and CC in real river water samples with recoveries of 95.0–102.1%. In addition, a possible detection mechanism of HQ and CC was discussed.
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Smart Materials and Structures
·
2015
·Vol. 24
·期 7
·075001
·
IF 2.502
Qingsong He,Linlin Song,Min Yu,ZhenDong Dai
We develop an ionic polymer metal-carbon nanotube composite (IPMCC) actuator composed of a multiwalled carbon nanotube (MWCNT)/Nafion membrane sandwiched between two hybrid electrodes, composed of palladium, platinum and MWCNTs. The surface morphology and cross-sectional structure of the metal-carbon nanotube hybrid electrode were observed using scanning electron microscopy (SEM). SEM investigation indicated that the MWCNT layer can adhere very well with the platinum–palladium metal electrode, fill the cracks in the metal surface, and prevent the oxidation of nanoscale platinum particles. These observations show that the surface resistance of the total electrode is retained and the stability of electrode property is maintained. The displacement, blocking force and nonlinear current versus voltage (V–I) characteristics were measured. Compared with an ionic polymer metal composite (IPMC), the IPMCC shows a more stable displacement and blocking force under 1, 1.2 and 2 V at 0.1 Hz, and 2.34–3.29 times higher effective air-operating time under 3 V at 0.1 Hz. It can be observed from the V–I characteristics that the change in shape becomes significant at amplitudes higher than 1.2 V. An equivalent circuit is used to model the nonlinear behavior of the IPMCC, in which the leakage current was taken into account and analyzed. The values of the components in the circuit are estimated and electrical behavior is simulated by using the Pspice software. Compared with the model with no consideration of the leakage current, the simulations obtained by the model considering leakage current showed better agreement with the experimental results. The impressive leakage current (20 mA), which is successfully simulated by the proposed model with the nonlinear circuit, is shown to play an important role in the total current.
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ChemPlusChem
·
2015
·Vol. 80
·期 9
·1435-1439
·
IF 3.026
Qin Liu,Kai Meng,Kui Ding,Yaobing Wang
Graphical Quick cleanup! When a melamine sponge was coated with polyaniline and then immersed in n -dodecylthiol, it became superhydrophobic and suitable for oil absorption (see picture). The modified sponge absorbs a broad spectrum of oil and organics efficiently with high absorption capacity, and exhibits thermal stability and excellent mechanical stability. Oil/water separation is a worldwide challenge due to frequent oil spillages, and high-performance absorbents are in high demand. In this work, a superhydrophobic sponge was fabricated by the polymerization of aniline, with subsequent simple immersion in n-dodecylthiol. The polyaniline (PANI) constructed a nanoscale rough surface on the three-dimension (3D) network of melamine sponge while n-dodecylthiol reduced surface energy, thus lead to the superhydrophobicity. This superhydrophobic sponge could absorb a broad spectrum of oil and organics efficiently, with the highest 122 times of its own weight absorption capacity. Owing to the strong mechanical elasticity inherited from the pristine melamine sponge and stable adhesion of PANI, this sponge exhibited good recyclability through squeezing. More importantly, the fabrication procedure is facile, low-cost and easily scalable. Thus, this superhydrophobic sponge is highly promising for absorption oil from water.
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