ACS Biomaterials Science & Engineering
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2023
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IF 5.8
Guangzhao Tian,Dan Yang,Chunrong Chen,Xiaoge Duan,Dong-Hwan Kim,Hailan Chen
The implantation of neural electrodes usually induces acute and chronic inflammation, which can result in the formation of glial scars encapsulating the implanted electrodes and the loss of neurons near the active electrode sites. Local presentation of anti-inflammatory drugs or neural protective factors has been evidenced as an effective strategy to modulate inflammatory responses and promote electrode–neuron integration. Here, a novel delivery system for the simultaneous presentation of both anti-inflammatory drugs (dexamethasone, Dex) and nerve-growth-promoting factors (nerve growth factor, NGF) from the electrode sites was developed via layer-structured carbon nanotubes and conductive polymers. The modified electrodes exhibited higher charge storage capacitance and lower electrochemical impedance compared to unmodified electrodes and electrodes coated with polypyrrole/Dex. Dex released from the functional coating under controlled electrochemical stimulation was able to inhibit the lipopolysaccharide-induced secretion or mRNA transcription of inflammatory cytokines, including nitric oxide, TNF-α, and IL-6 in RAW264.7 cells, and control the activation of cultured astrocytes. In addition, the functional coatings did not show a toxic effect on PC12 cells and primary neural cells but exhibited promoted activities on the adhesion, growth, and neurite extension of neural cells.
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高影响因子
MATERIALS CHEMISTRY AND PHYSICS
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2023
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IF 4.6
Jingpi Gao,En Li,Kena Song,Tongtong Ma,Ran Yang,Yi Zhang,Nan Li,Xiaoran Liu,Jinghua Li
The dye degradation method based on Fenton-like heterogeneous nanostructures has gained significant attention in recent years. We have developed a Copper-Stannum-Polypyrolle-Heterogeneous (Cu–Sn oxide-PPy Heterogeneous, CSPHGs) catalytic system. The system uses a PN junction formed by two oxide semiconductors (Cu 2 O and SnO 2 ) as the core, which is then coated with polypyrolle (PPy) on the outer layer. Under near-infrared (NIR) light irradiation (500.0 μg ml −1 , 1.2w·cm −2 ), the temperature rapidly reached approximately 45 °C within 5 min, demonstrating excellent photothermal performance. We have overcome the limitation of traditional Fenton reactions that require weak acidic conditions for effective operation. Moreover, we have increased the photostability of Cu 2 O monomers by incorporating them into a three-layer heterostructure . The Rhodamine B (RhB) degradation experiment revealed that the generated reactive oxygen species (·OH), effectively catalyze the decomposition of dyes. Within 120 min, the degradation rate exceeded 99%. This research provides a new option for environmental remediation through the combination of photo-Fenton and photothermal processes.
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Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Zhenglong Xu,Yifan Yang,Chuming Ye,Xianglong Lin,Jianfeng Shen,Mingxin Ye
Interfacial solar-powered water evaporation is a cost-effective and sustainable approach using solar energy for seawater desalination. Nevertheless, salt accumulation during solar desalination generally restricts the widespread application of solar vapor generation. Herein, taking merits of the excellent hydrophilicity and inherent porosity of holocellulose (HC), An excellent salt-resistant solar steam evaporator for long-term interfacial solar water desalination was fabricated by decorating polypyrrole (PPy) on the surface of HC. Due to the broadband light absorbance of PPy and the superhydrophilic HC substrate, the PPy-HC evaporator exhibited a high evaporation rate of 1.45 kg m −2 h −1 and conversion efficiency of 93.4 % in a 5 wt% NaCl solution under one sun illumination. Importantly, the evaporator presented superior salt-resistance and stability during long-term cycling test in high salinity brine. This work reveals the key role of superhydrophilicity and water transportation capability in high salt solution solar-driven desalination. Thus, this work provides an effective approach to address the issue of salt accumulation of the traditional evaporator, demonstrating its great potential for real-world solar-driven seawater desalination.
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高影响因子
Journal of Cleaner Production
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2023
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IF 11.1
Xin Zhong,Yuming Wu,Pu Zhang,Yibing Chen,Yongshuang Cai,Weiming Wang,Xue Min,Jun Xiong,Ming Li
Interfacial solar steam production (ISSP) is an attractive technique for extracting freshwater from seawater. However, significant efforts have been focused on designing solar evaporators with delicate structures to achieve excellent evaporation rates and steady desalination performance, which result in sophisticated processes and high costs that inhibit their practical application. Here, a cost-effective turnover polypyrrole decorated cotton fabric (PPy-CF) based solar evaporator was designed by sewing two identical pieces of PPy-CF photothermal material to the top and bottom of polyethylene foam (PF). The polyester fiber pillar (PFP) inserted into the PF incorporates vertical water-transporting channels to pump water into the PPy-CF efficiently. The heat dissipation of the PPy-CF was minimized by adjusting the number of PFP. The appropriate water supplied by the PFP water transporter enables the PPy-CF-based solar evaporator to attain an excellent evaporation rate of 1.56 kg m −2 h −1 and a remarkable photothermal efficiency of 90.45% under 1-solar intensity. Notably, the sufficient water provided by the PFP water transporter allows the PPy-CF-based solar evaporator to achieve a steady desalination performance of 8 h, and the evaporation rate maintains around 1.31 kg m −2 h −1 . Moreover, this solar evaporator can be self-cleaning by turning it over. Outdoor cycle experiments demonstrated that a 1 m 2 PPy-CF-based solar evaporator could produce approximately 6 kg of freshwater within 10 h. Designing a 1 m 2 this turnover solar evaporator costs about 1 dollar. The cost-effectiveness, simplicity in design, self-cleaning ability, and steady desalination performance make the turnover PPy-CF-based solar evaporator a promising solution to alleviate freshwater shortages.
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高影响因子
Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Jiang Wei,Jia Jia,Tong Liao
One of the challenges in water pollution control is the design of adsorbents aimed at achieving low cost, ultrafast, and selective adsorption of pollutants. Hypercrosslinked-polymers (HCPs) possess abundant microporous structures and advantages such as the ability to manipulate the framework structure, making them highly valuable in the field of adsorption. Three HCPs namely polythiophene (Th-1), polypyrrole (Py-1), and polyfuran (Fu-1) were synthesized through a Friedel's alkylation reaction utilizing different functional monomers (thiophene, pyrrole , and furan) employing a knitting strategy. The HCPs exhibit a heterocyclic structure (C-S-C, C-N-C, C-O-C) with remarkable charge selectivity as well as strong resistance to acids and alkalis. The HCPs, with varying functional monomers, demonstrate selective adsorption of dyes based on their charges and release of dyes dependent on solvent and pH conditions. The ease of synthesis, cost-effectiveness, and high reusability render these HCPs suitable for further design optimization through the utilization of diverse functional monomers to achieve efficient adsorption and removal of environmental pollutants from water.
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高影响因子
ACS Applied Nano Materials
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2023
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IF 5.9
Yao Shen,Siqi He,Yongyue Zhuang,Shuchen Huang,Chunfeng Meng,Aihua Yuan,Wenhua Miao,Hu Zhou
One-dimensional metal/N-doped carbons have exhibited promise for use as efficient catalysts of the oxygen reduction reaction (ORR). In this work, Fe,N-doped carbon nanotubes (Fe-NC@NCNT) are developed by pyrolyzing the precursor/template of a polypyrrole (PPy) nanotube-anchored Fe/Zn-based zeolite imidazole framework. Thanks to the hierarchical tubular nanostructure, high electronic conductivity, and abundant Fe-based species (Fe-Nx sites and Fe/Fe3C nanoparticles), the designed electrocatalyst exhibits a catalytic property comparable to that of commercial Pt/C. Specifically, the Fe-NC@NCNT catalyst undergoes a four-electron ORR pathway with an onset potential of 0.96 V and a half-wave potential of 0.88 V versus reversible hydrogen electrode, a small Tafel slope of 60.0 mV dec–1, remarkable long-term cycle durability, as well as strong alcohol tolerance in an alkaline electrolyte. When applied to the air-electrode catalyst of rechargeable zinc–air batteries, the Fe-NC@NCNT-catalyzed liquid-state battery delivers an open-circuit voltage of 1.44 V and a maximum power density of 115 mW cm–2 with a specific capacity of 814 mAh g–1, outperforming those of the battery assembled with commercial Pt/C + RuO2. In addition, the as-assembled solid-state battery displays a desirable rechargeability and electrochemical flexibility. The present study establishes a facile dual-template approach to fabricate highly efficient and inexpensive ORR electrocatalysts toward the application of metal–air batteries.
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高影响因子
CERAMICS INTERNATIONAL
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2023
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IF 5.2
Kai Sun,Xuechun Yang,Yuan Yuan,Jinjiu Qi,Boyang Liu,Andrey Karlovich Sarychev,Runhua Fan
Microwave absorbers have been developed to counter electromagnetic pollution, and enhancing their performance remains an ongoing concern. In this paper, carbon-coated Fe 3 O 4 and polypyrrole (PPy) were combined to construct composites with a core-double-shell structure, and the influences of multiple synergistic effects from ternary components, carbon defects, and microstructure on the electromagnetic properties of Fe 3 O 4 @C@PPy composites were investigated. The Fe 3 O 4 @C@PPy composites were successfully prepared by the low-temperature self-propagation method and in-situ oxidation polymerization process, achieving a −53.67 dB reflection loss at 12.24 GHz when the sample thickness was 2.13 mm, and the effective absorbing (RL < 10 dB) band covered 4.16 GHz (13.84–18 GHz) with a corresponding thickness of only 1.63 mm. The core-double-shell structure perfectly integrated various advantages of each component as well as provided multiple reflections and scatterings. Meanwhile, the polarization loss was notably enhanced by heterogeneous interfaces, and the dielectric-magnetic loss mechanism cooperatively accelerated the dissipation of electromagnetic wave energy.
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FOOD CHEMISTRY
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2023
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IF 8.8
Xinliang Mei,Xingyu Wang,Wenshuai Huang,Jiaxing Zhu,Kecheng Liu,Xingsheng Wang,Wei Cai,Ruiyin He
The monitoring and the rapid quantification of pesticides and their residues are becoming increasingly important in the field of food safety. Herein, the polycaprolactone/polypyrrole/β-cyclodextrin (PCL/PPy/β-CD) flexible sensor was developed for the electrochemical determination of new neonicotinoid insecticide Dinotefuran (DNF). The morphology, structure, and hydrophilicity of PCL/PPy/β-CD sensor probes were characterized by SEM, FTIR spectroscopy and static contact angle test. Under optimum conditions, the fabricated PCL/PPy/β-CD sensor exhibited excellent electrochemical sensing performance for DNF with a low detection limit of 0.05 μM in the linear concentration range from 0.2 μM to 50 μM and high sensitivity 14.07 μA·μM −1 ·cm −2 , which attributed to the two-stage porous structure, good electron transfer rate and the adsorption effect. The PCL/PPy/β-CD sensor also showed reproducibility (RSD = 4.76%), stability, and high selectivity towards DNF. In addition, a real samples investigation in rice with recoveries of 96.67 % ∼ 103.65 % implied the good application potential of PCL/PPy/β-CD in DNF monitoring.
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高影响因子
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
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2023
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IF 2.2
Hui Wang,Dengjie Zhong,Yunlan Xu,Haixing Chang,Hongyu Shen,Chunzi Xu,Jiaxin Mou,Nianbing Zhong,Bin Tang
In this work, in view of the poor adsorption capacity of sludge-based biochar, a sludge-based biochar adsorbent co-modified with hydrochloric acid and polypyrrole (PPy/SBC-HCl) was prepared and used to remove Cr(VI) from aqueous solution. Its characterization of SEM, EDS, BET, XRD, FT-IR, and XPS show that the removal mechanism of Cr(VI) by PPy/SBC-HCl includes electrostatic adsorption, ion exchange, reduction, and complexation. The removal efficiency of Cr(VI) by PPy/SBC-HCl decreases with the increase of pH. The coexisting cations Ca2+ and Mg2+ have a slight negative effect on it, while the oxoacid anions have a great negative effect on it. The adsorption of Cr(VI) by PPy/SBC-HCl is a spontaneous endothermic process, which conforms to the pseudo-second-order adsorption kinetic model and the Freundlich adsorption isotherm model. The maximum adsorption capacity is 97.37 mg g−1 at pH 2.0 and temperature 298 K.
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高影响因子
Nano Energy
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2023
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IF 17.6
Yanjuan Dong,Dewen Xu,Hou-Yong Yu,Qingling Mi,Fengyuan Zou,Xiang Yao
The rapid development of wearable intelligent electronics, silk fabric sensors combine strain sensing functionality with comfortable wearability and high stretchability have attracted much attention of wearable electronics . However, common physical loading conductive units on silk fiber/yarn/textile sensor still faced aggregation, structural instablility and poor signal capture yet. Herein, a new preparation method of conductive silk yarn based on multiple chemical covalent bond reactions is presented. Moreover, silk/di-aldehyde cellulose nanocrystals/polypyrrole (SACP) composite yarns as flexible strain sensor was achieved by Schiff-base reaction between amino groups of silk yarn (SY) and aldehyde groups of di-aldehyde cellulose nanocrystals (DACN) and in-situ polymerization of pyrrole on the DACN hydroxyl groups. The best SACP sensor with pyrrole loading of 0.2 g (SACP 0.2 ) showed robust mechanical strength (240 MPa), high conductivity (530 S/m), excellent sensitivity (gauge factor = 27) and outstanding dynamic durability during 12,000 cyclic stretching-releasing process. Especially, it can maintain good sensing performance after repeated rubbing and washing, and be further integrated into textile and clothing as wearable sensor by traditional sewing technology with different shapes. Moreover, SACP 0.2 sensor were designed and integrated into various multifunctional health warning device for human sleep, college students’ physical fitness test and trapping mosquitoes, demonstating great potential in wearable electronics.
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高影响因子
ACS Applied Materials & Interfaces
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2023
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IF 9.5
Panpan Hao,Rufeng Zhu,Yang Tao,Wei Jiang,Xue Liu,Yan Tan,Yuedan Wang,Dong Wang
Novel enhancement-mode organic electrochemical transistors (OECTs) have been prepared by poly(3, 4-ethylenedioxythiophene)-poly(styrenesulfonate) de-doped polyethylenimine on the multi-walled carbon nanotube-modified viscose yarn. The fabricated devices exhibit low power consumption with a high transconductance of 6.7 mS, rapid response time < 2 s, and excellent cyclic stability. In addition, the device has washing durability and bending and long-term stability suitable for wearable applications. Biosensors based on enhancement-mode OECTs for the selective detection of adrenaline and uric acid (UA) are developed by using molecularly imprinted polymer (MIP)-functionalized gate electrodes. The detection limits of adrenaline and UA analysis are as low as 1 pM, with the linear ranges of 0.5 pM to 10 μM and 1 pM to 1 mM, respectively. Moreover, the sensor based on enhancement-mode transistors can efficiently amplify the current signals according to the modulation of the gate voltage. The MIP-modified biosensor has high selectivity in the presence of interferents and desirable reproducibility. Additionally, due to the wearable nature of the developed biosensor, this sensing tool has the capability of being integrated with fabrics. Therefore, it has successfully been applied in textiles for the determination of adrenaline and UA in artificial urine samples. The excellent recoveries and rsds are 90.22–109.05% and 3.97–6.94%, respectively. Ultimately, these sensitive, low-power, wearable, and dual-analyte sensors help to develop non-laboratory tools for early disease diagnosis and clinical research.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Yi Wang,Jie Wang,Dong Wei,Lan Xu
In this study, a multicore-shell ternary composite electrode material (MnO 2 @Ppy@NPCNFs) with excellent electrochemical performances was prepared by using surface modification, in which core–shell Ppy@N-doped porous carbon nanofibers (Ppy@NPCNFs) with large specific surface area and high conductivity were used as the substrate (a multicore layer), and MnO 2 was loaded on the substrate by hydrothermal synthesis to form a shell layer, further improving the SC of electrode material. The parameters of hydrothermal growth of MnO 2 on Ppy@NPCNFs were explored by means of the control variable method and response surface methodology, and the optimal parameters were predicted and verified. Electrochemical test results showed that the SC of MnO 2 @Ppy@NPCNFs prepared under the optimal reaction parameters was as high as 595.77 F g −1 , and its capacitance retention was 96.2 % after 1000 cycles. Moreover, a symmetric supercapacitor prepared with the optimal multicore-shell electrode showed an energy density of 9.36 Wh kg −1 at a power density of 1000 W kg −1 and a retention rate of 92.46 % after 1000 cycles, indicating the promising application of multicore-shell ternary composite electrode material in high-performance supercapacitors.
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高影响因子
危险品化学品经营许可证（带存储）