JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Ziqiang Zhang,Tiancheng Liu,Fengquan She,Yulong Jiao,Yuanming Wang,Guohui Yuan
Aqueous zinc-ion batteries (AZIBs) are ideal for next-generation energy storage due to low cost, safety, and eco-friendliness, but Zn anode issues like dendrites, hydrogen evolution, and corrosion limit their lifespan. This study engineers a low-cost multifunctional nitrogen-doped porous carbon (NC) interface layer with a three-dimensional (3D) zincophilic structure and a hydrophobic, negatively charged surface for Zn anode. Its conductive 3D structure enables the uniform distribution of the electric field, suppressing dendrite formation and promoting even Zn 2+ deposition. On the one hand, the hydrophobic surface minimizes water-zinc interactions, while on the other hand, the negative charge facilitates selective Zn 2+ transport and repels sulfate anions, thereby significantly reducing hydrogen evolution and corrosion. Additionally, rich zincophilic sites not only lower the deposition overpotential but also induce (002) crystal-oriented growth, further stabilizing the interface and extending battery life. As a result, symmetric cells assembled with NC-coated Zn electrodes exhibit an impressive cycling life of over 2800 h at a current density of 2 mA cm −2 . At higher current densities (10 and 20 mA cm −2 ), the cells maintain cycling lifetimes of over 1300 and 1000 h, respectively, demonstrating exceptional stability. This work is expected to provide a simple, practical and scalable strategy for developing efficient and stable AZIBs.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Hongwei Ge,Dafan Chen,Mutai Bao,Dan Zhang,Zhenzong Lu,Xiuping Chen,Yiming Li
The unique stability and complexity of oil-in-water (O/W) nanoemulsions originating from various fields of life and production pose significant challenges for their separation. In this work, a novel oil/water separation membrane (MFC/PPy/Ni–Co–P) is constructed by loading polypyrrole (PPy) particles on cellulose (MFC) membranes to provide growth sites for Ni–Co–P alloys, so as to endow the membrane with in situ bubble-generating capability. Under the external electric field, the MFC/PPy/Ni–Co–P membrane is integrated into the electroflotation filtration system as a cathode, and the effective membrane cleaning and demulsification of nanoemulsions can be realized through the micro-aeration environment constructed in situ . The MFC/PPy/Ni–Co–P membrane demonstrates outstanding performance in gravity-driven separation of various oil/water mixtures, with a rejection rate of >99.99 % and a flux of >3000 L∙m −2 ∙h −1 . The interaction energy between oils with different viscosities and membranes is quantified by the extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) theory, revealing the dominant role of acid-base interactions in the anti-fouling process. Notably, the integration of MFC/PPy/Ni–Co–P membrane into an electroflotation separation system enables the coalescence and separation of small-sized, highly stable nanoemulsions with separation efficiencies of >99.86 %. This study provides a novel approach for simultaneous and efficient nanoemulsion separation and membrane fouling remediation, showing a great potential in the development of efficient and sustainable oil/water separation technologies.
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Materials Chemistry Frontiers
·
2024
·
IF 6
Cijun Shuai,Feng Ding,Xiaosong Chen,Huarui Zhou,Hongyi Qian,Yifeng Wang,Yanyan Chen,Fangwei Qi,Xinna Bai
As a photoelectric material, bismuth sulfide (Bi2S3) can convert light signals into electrical signals and thus hold tremendous promise in constructing wireless electrical stimulation to accelerate nerve regeneration. However, the easy recombination of electrons and holes weakens the electrical stimulation effect. Herein, core–shell Bi2S3@PPy nanorods were prepared via the in situ hydrothermal polymerization of conductive polypyrrole (PPy) on Bi2S3 and were then blended into poly-L-lactic acid powder to fabricate a nerve conduit via laser additive manufacturing. Under a rotating magnetic field, conductive Bi2S3@PPy in the conduit could cut the magnetic inductance line to generate induced electromotive force that could drive the electrons and holes of Bi2S3 in opposite directions, thereby achieving efficient separation. Results indicate that the enhanced electron–hole separation boosted photocurrent generation, with an output current of 7.5 μA, which was significantly higher than the photocurrent under light irradiation (5.0 μA) and the induced current under magnetic field (2.5 μA). Immunofluorescent staining demonstrated that the enhanced photocurrent could up-regulate the expression of neuronal markers Nestin and GFAP. Moreover, the intracellular influx of Ca2+ was improved, which indicated that the differentiation of BMSCs into neurons was promoted. Overall, this work provides a potential wireless electrical stimulation strategy for accelerating nerve repair.
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高影响因子
CELLULOSE
·
2024
·Vol. 31
·期 17
·10375-10388
·
IF 4.9
Hong Dican,Li Gaosheng,Wei Xuanru,Sun Chenyu,Shi Zhuqun,Yang Quanling,Xiong Chuanxi
Electronic skin, as an intelligent material capable of simulating human skin functions, plays a crucial role in long-term stable health monitoring, human–computer interaction, and medical devices. However, to achieve the application of highly functional electronic skin, there remains a challenge in fabricating pressure sensors that simultaneously possess flexibility, vapor permeability, and exhibit excellent sensing capabilities. Herein, we prepared a dispersion of 2,2,6,6-tetramethylpiperidinyl-1-oxy oxidized cellulose nanofiber (TOCN) and hollow polypyrrole (hPPy) microspheres prepared through the template method. The hydrogel films were obtained by a simple blending approach and Ca 2+ crosslinking followed by drying. The resulting TOCN/hPPy hydrogel films exhibited good mechanical properties, exceptional flexibility, and reliable vapor permeability. Notably, the developed piezoresistive pressure sensor demonstrated a sensitivity of 2.08 kPa −1 , along with a fast response time (90 ms) and recovery time (150 ms). Furthermore, the sensor exhibited a low detection limit of 7.8 Pa, excellent stability at high pressures, and long-term cycling stability of up to 12,500 cycles. Graphical abstract
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高影响因子
LANGMUIR
·
2024
·
IF 3.7
Liming Zeng,Bang Yuan,Qing Zhou
Oxygen evolution reaction (OER) is a multistep proton-coupled four-electron process with sluggish kinetics, which seriously limits the hydrogen production efficiency, thus it is of great importance to develop an efficient and stable OER catalyst. In this study, a two-step differential pyrolysis strategy is employed to design a three-dimensional porous microstructured material consisting of RuOx nanoparticles coated by a thin-layer carbon, where the active particles were isolated in separate chambers and the RuOx nanoparticles mainly existed in the form of a heterogeneous interface between RuO2 and partial metallic Ru. The preparation parameters of the catalysts are optimized via combining transient and steady-state polarization properties, and the target catalyst Cat-500–1.5t shows the best OER catalytic performance after ca. 60 h of a chronopotentiometry test in an acidic medium with a much smaller performance change than other samples. The unique design of adopting a carbon layer to form separate reaction chambers largely mitigates the excessive oxidation loss of the active components under strong oxidation potential. The suitability of the catalyst with the loaded substrate and test media is explored, and in an acidic medium, the carbon paper is much better than the titanium fiber, while in an alkaline medium, the titanium fiber is obviously superior to the carbon paper. On both carbon paper and titanium fiber, the performance in an alkaline medium outperforms that in an acidic medium, and the possible reasons for the performance difference are analyzed. Herein, to obtain the actual electrocatalytic performance, the optimal design of the catalyst structure and matching suitable conductive substrate in a specific medium are quite necessary, which provides a feasible strategy for the acquisition of efficient and stable electrocatalysts and the desirable presentation of performance.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Shuangqing Li,Ning Zhang,Heqiu Chen,Zongrui Zhang,Yafei Zhao,Yinze Yang,Huishan Shang,Dan Wang,Bing Zhang
Exploiting inexpensive composite phase change materials (PCMs) with comprehensive characteristics of high encapsulation efficiency, good leakage resistance, strong flexibility, high heat conductivity, and powerful light absorption is considerably imperative for their solar-thermal and solar-thermal-electric conversion. Herein, polypyrrole (PPy) modified halloysite (HNT/PPy) was assembled into the pores of melamine formaldehyde (MF) sponge to construct hierarchical porous structure (MHP), in which PPy serves as light absorber and heat conducting agent to consolidate the light absorption and thermal conductivity, while the interwoven HNT in MF not only acts as carrier to provide sufficient space for guaranteeing more PCMs’ encapsulation, but also dramatically narrows MF’s pore size and prevents PCMs’ leakage. As expected, the MHP can encapsulate as high as 95 wt% of polyethylene glycol (PEG) with extremely high latent heat of 177.8 J g −1 (PEG@MHP). The rich hydroxyl groups on PEG, PVA and HNT form strong hydrogen bond interaction, effectively improving the leakage-proof performance of PEG@MHP. Especially, PEG@MHP with 82 wt% encapsulation ratio (PEG@MHP-82) demonstrates unexceptionable leakage resistance (negligible leakage at 100 °C), strong light absorption (97 %), good photothermal conversion efficiency (90.36 %), and high thermal conductivity (0.235 W m −1 K −1 ). Except that, the solar-thermal-electric (STE) conversion system assembled with PEG@MHP-82 enables efficient voltage and current outputs of 587 mV and 83.3 mA respectively under 3 kW m −2 with heat dissipation in water. Encouragingly, the voltage output still achieves 154.7 mV under actual outdoor illumination (0.984 kW m −2 ). This work provides a simple method to efficiently encapsulate PCMs for realizing high-efficiency solar-thermal and solar-thermal-electric conversion.
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高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 10
·1-11
·
IF 5.3
Li Ningzhen,Zhang Zhenteng,Tian Tingting,Sun Luyu,Xu Lixiao,Wang Jiasheng,Hui Ni
A cortisol biosensor was developed based on double-conducting polymer nanowires, which exhibits excellent conductivity, resistance to biological contamination, and outstanding sensing performance. The biosensor employs dual-mode electrochemical techniques, namely, differential pulse voltammetry (DPV) and chronoamperometry (CA), for the sensitive and low fouling detection of the glucocorticoid hormone cortisol. Experimental results demonstrated that the linear detection range of the biosensor in DPV mode was 1.0 × 10 −14 –1.0 × 10 −8 M, with a detection limit of 0.131 × 10 −14 M. In CA mode, the biosensor exhibited a detection range of 1.0 × 10 −13 –1.0 × 10 −7 M and a detection limit of 0.313 × 10 −13 M. The biosensor was successfully utilized for the rapid detection of cortisol in human saliva. The combination of a high-specificity cortisol aptamer and functionalized double-conducting polymer nanowires ensured the exceptional specificity and sensitivity of the biosensor in detecting real biological samples. Graphical Abstract
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zenghui Sun,Fei Huang,Yongshuang Cai,Wanying Liang,Siyu Fan,Chao Tu,Yufeng Liu,Chao Yan
Nowadays, freshwater has increasingly become a scarce resource. Seawater distillation is limited due to the high costs and low conversion rates. Herein, a functional cotton fabric with significant photothermal properties was prepared through a simple sanding treatment, followed by a polypyrrole (PPy) and Au nanoparticles coating. The functional materials were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis. The solar water evaporation measurements showed that the sanded cotton fabrics coated Au@PPy exhibited excellent photothermal conversion with an energy efficiency being 93.38 % for solar-steam generation under 1.0 sun irradiation, corresponding to a water evaporation rate of 1.33 kg·m −2 ·h −1 . Moreover, the coated fabric also exhibited excellent tolerance to acidic and alkaline conditions.
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高影响因子
AICHE JOURNAL
·
2024
·
IF 3.5
Shuhuan Han,Zhengxuan Shao,Xiuhui Li,Jiwen Fu,Xiaofei Zeng
MoS 2 has been considered as a potential replacement for Pt-based catalysts in hydrogen evolution reaction. But the lack of sufficient active sites limits the intrinsic activity of MoS 2 -based catalysts. Here, we propose a general strategy to synthesize ultra-small MoS 2 nanosheets grown evenly on carbon substrates to maximize the active sites by exposing more edge positions and inducing MoS 2 phase transition. It is found that Ru can assist MoS 2 to grow vertically and uniformly on the surface of carbon substrates by in situ derivatization to improve the catalytic activity effectively. MoS 2 nanosheets on the substrates are much smaller and denser than those prepared without Ru or with other metal elements. Electrocatalysis results revealed that the number of active sites and conductivity of the optimized Ru-MoS 2 @CSs increase obviously, and the overpotential at 10 mA cm −2 is much lower than that of MoS 2 @CSs and metal (Co, Ni)-MoS 2 @CSs, respectively, at 1.0 M KOH.
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Advanced Healthcare Materials
·
2025
·
IF 9.6
Xingjun Zhao,Jiaxin Li,Peng Zhang,Chunsheng Xiao,Li Chen
Diseases caused by bacterial infections place a significant burden on global public health. Sonodynamic therapy (SDT), as an emerging antibacterial treatment, faces clinical challenges due to the non-polar nature of most sonosensitizers. To address this, an acid-responsive zinc-porphyrin-based sonosensitizer (Zn-TCPP) is developed via a simple thermal reaction, which is then coated with phenylboronic acid-modified hyaluronic acid (B-HA), to fabricate B-HA@Zn-TCPP. While in the mildly acidic microenvironment mimicking an infected wound site, the released B-HA@Zn-TCPP achieves effective SDT activity. The disruption of the bacterial membrane and the levels of intracellular reactive oxygen species (ROS) verified that the inhibition rate can reach 99% within 5 min, without any development of resistance after 15 consecutive generations of culture. Additionally, under ultrasound (US) -mediated cavitation, B-HA@Zn-TCPP exhibits excellent penetration into biofilms, achieving a 90.04% bactericidal rate for bacteria within biofilms. In vivo studies further demonstrated that B-HA@Zn-TCPP can effectively accelerate the healing of bacterial infected wounds with a wound healing rate of 98.65% within 9 days. Therefore, B-HA@Zn-TCPP as a novel sonosensitizer offers a viable strategy to overcome the limitations of traditional sonosensitizers for the bacterial wound infections.
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Small
·
2024
·
IF 13
Huihui Liu,Cunji Gao,Peijing Xu,Yingshu Li,Xiaoxiao Yan,Xiaolu Guo,Changchun Wen,Xing-Can Shen
Surface-enhanced Raman scattering (SERS) imaging integrating photothermal and photodynamic therapy (PTT/PDT) is a promising approach for achieving accurate diagnosis and effective treatment of cancers. However, most available Raman reporters show multiple signals in the fingerprint region, which overlap with background signals from cellular biomolecules. Herein, a 4T1 cell membrane-enveloped gold nanorods-manganese porphyrins system (GMCMs) is designed and successfully fabricated as a biomimetic theranostic nanoplatform. Manganese porphyrins are adsorbed on the surface of Au nanorods via the terminal alkynyl group. Cell membrane encapsulation protects the manganese porphyrins from falling off the gold nanorods. The biomimetic GMCMs confirm specific homologous targeting to 4T1 cells with good dispersibility, excellent photoacoustic (PA) imaging properties, and preferable photothermal and 1 O 2 generation performance. GMCMs exhibit distinct SERS signals in the silent region without endogenous biomolecule interference both in vitro and in vivo. Manganese ions could not only quench the fluorescence of porphyrins to enhance the SERS imaging effect but also deplete cellular GSH to increase 1 O 2 yield. Both in vitro and in vivo studies demonstrate that GMCMs effectively eradicate tumors through SERS/PA imaging-guided PTT/PDT. This study provides a feasible strategy for augmenting the Raman imaging effects of the alkynyl group and integrating GSH-depletion to enhance PTT/PDT efficacy.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Qiang Wei,Zhen Zhang,Wang Sun,Jie Wu,Xin Wang,Yushi Yu,Xiujie Cai,Xuejin Zhang,Lijun Wang,Jianjun Chen,Xue Li,Guofu Zhou
Flexible phase change films have received considerable attention for their potential applications in personal thermal management (PTM). However, it is still a huge challenge to develop PTM materials combined with all desired functions, including high flexibility, latent heat, electrical conductivity, photothermal conversion, Joule heating, and mechanical strength. Herein, we reported a versatile flexible phase change film (DBT) for PTM by combining docosane microcapsules (C 22 -CMP) and bacterial cellulose coated with polypyrrole (BC/PPy) into thermoplastic polyurethane (TPU) elastomer. C 22 -CMP microcapsules with cellulose nanocrystal (CNC)/melamine–formaldehyde (MF)/PPy as shells were prepared with CNC stabilized Pickering emulsion via in-situ formation of MF and PPy, and displayed high anti-leaking stability and latent heat. The BC/PPy with a high aspect ratio was employed as the conductive nanofiller to construct 3D conductive networks of TPU. The obtained DBT-334 film possessed high latent heat (64.3 kJ/kg), photothermal conversion ability (80 °C under light irradiation at 1.0 W/cm 2 ), electrical conductivity (9.26 S/m), Joule heating (48.1 °C at 5 V), flexibility, and sufficient mechanical strength (elongation at break of 6.0 % and Young’s modulus of 12.9 MPa), making it promising as PTM. Moreover, the applications of DBT for solar thermoelectric generation and motion sensing were also demonstrated.
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