Polymers
·
2020
·Vol. 12
·期 11
·2482
·
IF 3.426
Fei Song,Zhidan Wang,Wenli Gao,Yu Fu,Qingrong Wu,Shouxin Liu
Novel temperature/reduction dual stimulus-responsive triblock copolymers, poly [2-(2-methoxyethoxy) ethyl methacrylate-co-oligo (ethylene glycol) methacrylate]-b-(L-polylactic acid)-SS-b-(L-polylactic acid)-b-poly[2-(2-methoxyethoxy) ethyl methacrylate-co-oligo(ethylene glycol)methacrylate] [P(MEO2MA-co-OEGMA)-b-PLLA-SS-PLLA-b-P(MEO2MA-co-OEGMA)] (SPMO), were synthesized by ring opening polymerization (ROP) of L-lactide and 2,2’-dithio diethanol (SS-DOH), and random copolymerization of MEO2MA and OEGMA monomers via atom transfer radical polymerization (ATRP) technology. The chemical structures and compositions of the novel copolymers were demonstrated by proton nuclear magnetic resonance (1H NMR) and Fourier transform infrared spectroscopy (FTIR). The molecular weights of the novel copolymers were measured by size exclusive chromatography (SEC) and proved to have a relatively narrow molecular weight distribution coefficient (ÐM ≤ 1.50). The water solubility and transmittance of the novel copolymers were tested via visual observation and UV–Vis spectroscopy, which proved the SPMO had a good hydrophilicity and suitable low critical solution temperature (LCST). The critical micelle concentration (CMC) of the novel polymeric micelles were determined using surface tension method and fluorescent probe technology. The particle size and morphology of the novel polymeric micelles were characterized by dynamic light scattering (DLS) and transmission electron microscopy (TEM). The sol–gel transition behavior of the novel copolymers was studied via vial flip experiments. Finally, the hydrophobic anticancer drug doxorubicin (DOX) was used to study the in vitro release behavior of the novel drug-loaded micelles. The results show that the novel polymeric micelles are expected to become a favorable drug carrier. In addition, they exhibit reductive responsiveness to the small molecule reducing agent dithiothreitol (DTT) and temperature responsiveness with temperature changes.Keywords:temperature/reductive dual-stimulus responsiveness;block copolymers;amphiphilic;ring-opening polymerization;atom transfer radical polymerization
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PubMed
高影响因子
Frontiers in Microbiology
·
2026
·
IF 5.8
Jing Zhao,Xinyue Hu,Wangmin Wang,Anila Sikandar,Gang Chu,Wenxiu Qin,Kai Sun,Cheng Chen,Youbin Si
The coupling application of carbonaceous material provides an innovative strategy to improve anaerobic bioreaction in wastewater treatment. This study synthesized biomass-waste-derived iron-char composites via a co-pyrolysis to explore the role on the biotransformation of p-nitrophenol (PNP) in anaerobic systems. With the increasing temperature, the proportion of crystalline magnetite was enhanced in iron-char composites. The transformation of Fe species from inorganic to organic combined states were evidenced by C − O − Fe bond formation as per XPS spectra, which improved the electron transfer performance of carbon matrix. Quantitative calculation demonstrated that iron-char composites significantly boosted microbial PNP degradation by 34.1–55.3%, especially for iron-chars of high temperature. The mediated electron transfer capacity of iron-char composites was a critical factor enhancing anaerobic PNP degradation with increasing pyrolysis temperature. In addition, the Fe(II) released from hematite/magnetite in iron-chars was observed, which was significantly responsible for PNP degradation. This study quantified the contributions of microbial metabolism, mediated electron transfer, and interfacial reactivity to microbial transformation of nitrophenol contaminant through establishing a structure-application relationship of iron-char composites. This work provides critical scientific insights and practical guidance for the bio-augmentation treatment of nitro-phenolic industrial wastewater.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Boheng Chen,Hongpo Liu,Huiyin Zheng,Che Liu,Zhuosen Wang,Yapeng Tian,Xinwei Cui
Lithium oxalate (Li 2 C 2 O 4 ) is regarded as a promising prelithiation agent due to its high specific capacity and cost-effectiveness. However, its intrinsically poor electronic conductivity and sluggish reaction kinetics result in a high lithium liberation potential (typically above 4.5 V), which challenges the stability of electrolytes and electrode materials, and deteriorates overall battery performance. In this work, the intermetallic NiBi 3 catalyst with metallic conductivity and strong interfacial interaction is introduced to promote the low-potential decomposition of Li 2 C 2 O 4 . Benefiting from the synergistic electronic effect between Ni and Bi, the incorporation of Bi effectively modulates the electronic structure of Ni sites via d – p orbital hybridization, thereby enhancing the adsorption and activation of Li 2 C 2 O 4 , weakening the Li 2 C 2 O 4 framework and facilitating its decomposition. When coupled with ultrahigh-Ni NCM96 cathodes, the NiBi 3 -Li 2 C 2 O 4 prelithiation system provides higher charge capacity (273.3 mAh g −1 ) and improved reaction kinetics compared to the pristine counterpart. Furthermore, full-cell configurations based on SiO x anodes exhibit enhanced lithium compensation capability, maintaining a capacity retention of 52.9% after 150 cycles at 0.5C. These results demonstrate that intermetallic NiBi 3 is an efficient catalyst for activating Li 2 C 2 O 4 and provides a viable strategy for developing high-performance cathode prelithiation systems. Download: Download high-res image (119KB) Download: Download full-size image
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Wendi Huang,Beibei Huang,Jingjun Bi,Junzhou Chen,Yufan Chen,Jianjun Yang,Jian Zhong,Ping Liu,Qingguo Gao
Recently, tellurium (Te), a p-type semiconductor material, has attracted tremendous interest in electronics and large-scale integrated circuits owing to its high hole mobility and excellent air stability. Although evaporated Te thin films have shown great potential for large-scale p-type transistors, further research is needed to improve the quality of Te thin films and enhance their electrical performance. In this work, we demonstrate that a simple ultraviolet/ozone (UV-O 3 ) pretreatment of Si/SiO 2 substrates can significantly reduce surface roughness and improve crystallinity in TeO x /Te films, as confirmed by grazing-incidence X-ray diffraction (GIXRD), Raman spectroscopy and atomic force microscopy (AFM). The improved structural properties lead directly to a remarkable improvement in device electrical performance. The hole mobility of devices fabricated on UV-O 3 -pretreated substrates increases markedly from 27.4 cm 2 /V·s to 75.8 cm 2 /V·s compared with those on untreated substrates. In addition, the subthreshold swing, hysteresis, contact resistance, interface trap state density and threshold-voltage stability under both negative bias stress (NBS) and positive bias stress (PBS) are all substantially improved. This work provides a simple and easily implementable approach to enhance the electrical performance of p-type Te-based transistors, offering valuable guidance for their application in next-generation electronics.
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Carbon Neutralization
·
2026
·Vol. 5
·期 1
·e70123
·
IF 21.5
Jiangtao Tong,Yitong Wang,Yuhua Wang,Haijun Zhang,Jianxin Li,Denglei Zhu,Yao Guo,Xiaojing Bai,Chaojun Cui
Aqueous zinc-ion batteries (AZIBs) have garnered considerable attention due to their superior safety, affordability, and eco-friendliness. However, the uncontrolled growth of zinc dendrites and the parasitic hydrogen evolution reaction (HER) severely limit their cycling stability and practical lifespan. In this study, sodium p -aminobenzenesulfonate (SABS) is introduced into ZnSO 4 -based electrolytes as a functional additive. SABS not only reconstructs the Zn 2+ solvation sheath but also forms stable complexes with Zn 2+ , facilitating the in-situ formation of a robust three-dimensional networked solid electrolyte interphase (SEI) on the zinc anode surface. As a result, Zn||Zn symmetric cells exhibit ultra-stable cycling performance exceeding 2000 h at 1 mA cm −2 , while Zn||Cu asymmetric cells maintain over 2000 cycles at 5 mA cm −2 with high Coulombic efficiency. The underlying mechanism of interfacial stabilization and SEI-like interphase formation is further elucidated by combining ex situ structural/chemical characterizations with density functional theory (DFT) calculations. Moreover, the Zn||I 2 @AC full cell containing SABS additives exhibits excellent specific capacity and long-term cycling performance over a wide range of current densities. This work provides a promising electrolyte additive strategy to enhance the interfacial stability and electrochemical performance of AZIBs through coordinated solvation and interphase regulation.
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CRYSTAL GROWTH & DESIGN
·
2026
·
IF 3.6
Jingdan Lei,Yajing Wang,Xiaoyun Yang,Xiwei Zhang,Di Yuan,Huijuan Geng,Dan Hu,Gui Yang,Chao Wang
Polycrystalline SnSe is more favorable for practical applications compared with its single-crystalline counterpart due to its easier scalability and mechanical robustness. However, its TE performance is limited by poor electrical transport properties, resulting in a low carrier concentration and modest power factor. Here, we demonstrate both theoretically and experimentally that alkali metal Li doping serves as an effective carrier engineering strategy to overcome performance limitations. First-principles calculations reveal that Li acts as an efficient acceptor, inducing a significant charge transfer and modifying the electronic structure. Experimentally, doping Li increases the carrier concentration 2 orders of magnitude up to 1.8 × 1019 cm–3, resulting in significantly enhanced electrical conductivity and a peak power factor of 7.1 μW cm–1 K–2. Eventually, a high zT value of ∼2.0 at 823 K is achieved in Li-doped SnSe. This work offers important insight for the rational design of high-performance polycrystalline SnSe.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Daoyue Xie,Junjie Ni,Huinan Che,Bin Liu,Yanhui Ao
The efficiency of photocatalytic O 2 activation for reactive oxygen species (ROS) generation is limited by kinetically sluggish electron transfer. Overcoming this limitation, we engineered a heterointerface (forming BaTiO 3 /Bi 12 O 17 Cl 2 , BTO/BOC) to facilitate d-p orbital hybridization by strain engineering, thereby creating a surface electron-rich region. Results demonstrate that strain engineering amplifies the d-p orbital hybridization effect, significantly enhancing O 2 adsorption strength. Furthermore, strain application enriches the electronic states near the Fermi level, enabling more electrons to migrate to the material surface to participate in O 2 activation. Consequently, the optimized BTO/BOC-3 exhibits exceptional ROS productivity, with 1.584 and 432.96 µmol g⁻¹ h⁻¹ yields for hydroxyl radical (·OH) and superoxide radical (·O 2 ⁻), respectively. This enables superior sulfamethoxazole (SMX) degradation performance, representing 2.88-fold and 11.08-fold enhancements over photocatalysis and piezo-catalysis, while toxicity simulations confirm reduced ecotoxicity of the degradation intermediates. This work pioneers a novel pathway for efficient piezo-photocatalytic ROS generation, enabling high-performance environment remediation.
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JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2026
·Vol. 109
·期 3
·e70683
·
IF 4.2
Yalong Ge,Zusheng Chen,Tian Liang,Ronghua Qin,Haibo Xiao,Shiheng Liang,Ruilong Wang,Lingfang Xu
Electrocaloric cooling offers a more eco-friendly and efficient alternative to conventional vapor-compression refrigeration. Composites, incorporating ceramic nanoparticles within a ferroelectric polymer matrix, exhibit both high dielectric breakdown strength and flexibility. In this study, a sandwich-structured composite film of bismuth ferrite (BiFeO 3 )-filled poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-TrFE)) was prepared using a doctor-blade method. Distinct from terpolymers possessing relaxor ferroelectric properties, the material facilitates a more convenient indirect assessment of its electrocaloric performance. At 100 MV·m − 1 , the polymer composite containing 10 wt% BiFeO 3 achieved a maximum isothermal entropy change ( ΔS ) and an adiabatic temperature change ( ΔT ) of 113.4 kJ·K − 1 ·m − 3 and 17.2 K near the Curie temperature ( T C ) of 383 K. The ΔT of the composites is twice that of pure P(VDF-TrFE) films under the same electric field. These values significantly exceed those reported for P(VDF-TrFE)-based composites. The enhanced polar beta phase in P(VDF-TrFE) phase and enlarged local electric field caused by BiFeO 3 heterogeneous segment in the polymer matrix should both contribute to the outstanding electrocaloric performance. This research broadens the application scope of eco-friendly, flexible electronic materials that maintain stable electrocaloric refrigeration properties under high electric fields.
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POLYMER ENGINEERING AND SCIENCE
·
2026
·
IF 3.6
Hang Shu,Tao Li,Jiating Liu,Yi Chen
In the field of advancing flexible sensor technologies, achieving both high conductivity and mechanical flexibility in hydrogel materials remains a critical challenge. To address this issue, a flexible conductive gel based on a synergistic P(AM-AMPS)-PVP network (PAAP) was developed. Through the formation of a hydrogen-bonding network and continuous ion transport pathways, the gel achieves a balanced improvement in electrical conductivity and mechanical flexibility. The resulting PAAP gel exhibits an exceptional tensile strain capacity of up to 1811%, notable ionic conductivity (59.41 mS/cm), and a very low elastic modulus (< 10 kPa), indicating strong structural resilience and adaptability under strain. These characteristics make the gel particularly suitable for use in flexible strain sensing and Morse code signal recognition. When integrated with a support vector machine (SVM) classification model, the system enables precise identification of “dot-dash” signal patterns, achieving classification accuracy exceeding 95%. This work provides a promising approach and theoretical basis for the development of flexible hydrogels in intelligent sensing, information decoding, and wearable communication technologies. Highlights A stretchable, soft, and conductive P(AM-AMPS)-PVP hydrogel for sensing. Integration of SVM enables intelligent signal recognition and interfacing. The SVM achieves a high accuracy in recognizing dot-dash signal patterns.
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ACS Catalysis
·
2026
·
IF 13.6
Guanyi Zhang,Zhihao Zheng,Na Liu,Lei Wang,Yongfang Xu,Dawei Wang,Xun Zhao,Zhitong Qian,Haisong Feng,Xin Zhang,Weiming Zhai,Feng Liu,Zhihai Hu,Yusen Yang
Abstract The aqueous-phase hydrodeoxygenation of biomass-derived fatty acids offers an alternative route for the production of diesel-range hydrocarbons, but remains a major challenge. Herein, we report a hydrophobic CoP catalyst anchored on P–N co-doped carbon spheres (CoP@PNC-900), which exhibits high performance for the aqueous-phase hydrodeoxygenation of palmitic acid at 270 °C and 2 MPa H2, delivering nearly complete conversion together with over 99% yield of C15+C16 alkanes. The enhanced performance arises from the synergy between CoP active sites and the hydrophobic interface, which promotes C–O bond cleavage while enhancing the contact between hydrophobic substrates and catalytic sites. Isotopic-labeling experiments demonstrate that water acts exclusively as the reaction medium rather than a hydrogen source. In situ FT-IR–MS analysis combined with DFT calculations confirms the hydrodeoxygenation- and decarbonylation-related pathways, with C–O bond cleavage of the alcohol intermediate identified as the rate-determining step in the hydrodeoxygenation pathway. Moreover, the catalyst exhibits a broad substrate scope for various fatty acids and esters as well as stable recyclability under hydrothermal conditions. Finally, a preliminary life cycle assessment (LCA) highlights the potential environmental benefits of the aqueous-phase catalytic process. This work establishes an effective strategy that integrates active-site engineering with interfacial hydrophobic microenvironment regulation for the aqueous-phase valorization of biomass-derived fatty acids.
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高影响因子
ACS Applied Nano Materials
·
2026
·
IF 5.8
Zihan Zhang,Yang Kang,Xuan Li,Wushuang Bao,Liuan Li,Longtao Yang,Wei Chen,Xin Liu,Yuanmin Luo,Wengang Gu,Yang Li,Reza Taheri Ghahrizjani,Zongzhi Yin,Junsong Cao,Haiding Sun
Abstract Photoelectrochemical sensing within complex biochemical environments typically necessitates the simultaneous determination of multiple analytes, as single-parameter measurements provide limited information. However, most existing biosensing platforms encode analyte information within a single signal dimension, which restricts their ability to achieve intrinsic multiplexing. Here, we report a polarity-encoded photoelectrochemical biosensing platform based on a wavelength-resolved p-AlGaN/n-GaN heterojunction. In this system, photocurrent polarity functions as an additional signal dimension beyond conventional amplitude-based encoding. The device exhibits illumination-dependent polarity switching, enabling analyte-specific signal transduction. Regulation of carrier transport across the heterojunction generates bipolar photoresponses, in which polarity determines analyte identity while current amplitude remains proportional to concentration. This mechanism enables wavelength-resolved dual-analyte detection on a single electrode, as demonstrated by the selective discrimination of glucose and hydrogen peroxide under different illumination conditions. Moreover, surface modification with RuO2 enhances interfacial charge-transfer kinetics and improves carrier utilization efficiency, leading to amplified bipolar signals and improved detection performance. The system achieves sensitivities of 723 μA mM−1 cm−2 and 0.11 mA mM−1 cm−2 for hydrogen peroxide (H2O2) and glucose, respectively. This work establishes a polarity-resolved signal-encoding strategy for intrinsically multiplexed photoelectrochemical biosensing.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·Vol. 143
·期 44
·e71554
·
IF 3.1
Yue Shen,Ying Liu,Yao Jiang,Jingtao Wang,Zheng Li
Ferroelectric polymers are promising candidates for flexible energy harvesting owing to their piezoelectricity, low density, flexibility, and environmental compatibility. Herein, P(VDF-TrFE) composite films containing ZnO nanoparticles and carboxylated multi walled carbon nanotubes (CMWCNTs) were prepared, and their structure and electrical properties were regulated by hot rolling. ZnO nanoparticles acted as heterogeneous nucleating agents to promote β-phase formation, while CMWCNTs enhanced dielectric response through the microcapacitor effect. The optimized composite contained 1.08 wt% ZnO and 0.02 wt% CMWCNTs. With increasing rolling temperature, molecular orientation was progressively improved, and the film rolled at 90°C exhibited an orientation degree of 0.66, high β-phase fraction, remanent polarization of 22 μC cm −2 , piezoelectric coefficient of 46 pC N −1 , and relative dielectric constant of 19.4. A piezoelectric triboelectric nanogenerator based on this film delivered a maximum output voltage of 31 V and a power density of 15.3 μW cm −2 . This work clarifies how ZnO nucleation, CMWCNT assisted dielectric regulation, and hot rolling induced orientation jointly modulate the structure and output performance of P(VDF-TrFE) based ternary composite films.
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