JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
·
IF 9.7
Bingbing Qiu,Banglong Shen,Junhao Dai,Donghui Zhang,Yanfang Wang,Huaqiang Chu
The development of efficient alkaline water electrolysis catalysts remains challenged by sluggish hydrogen evolution kinetics and insufficient active sites. Herein, a Cu-P-Co ternary electrocatalyst with pine-needle-like nanorod/nanosheet hybrid architecture is fabricated on nickel foam (Cu-P-Co/NF) via one-step electrodeposition. The introduction of Cu and P elements enables the formation of a well-defined Cu 3 P nanorod / Co 2 P nanosheet heterostructure. This unique hybrid architecture provides a vast number of accessible electrochemical active sites. Crucially, the advanced density functional theory (DFT) simulations elucidate that the established Cu 3 P@Co 2 P heterointerface drives substantial interfacial charge redistribution. This interfacial electronic interaction effectively modulates the local electronic structure of the Co sites, specifically inducing a downshift in the d-band center, which optimizes the hydrogen desorption free energy (ΔG H ⁎ ). More importantly, this electronic modulation directly optimizes the H 2 O adsorption free energy on the Co active centers, thereby significantly boosting their intrinsic HER activity in alkaline media. The Cu-P-Co/NF achieves an ultralow overpotential of 70 mV at 10 mA cm −2 in alkaline media, outperforming most reported Co-based electrocatalysts. This work demonstrates dual regulation of nanostructure engineering and electronic modulation under the ternary synergy through experimental coupling theory simulation calculation, providing a rational design paradigm for high-performance electrocatalysts.
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MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Pengfei Xu,Qianfeng Li,Ye Chen,Changling Yan,Gongke Wang
Perovskite materials exhibit significant potential in optoelectronic devices, biomedical applications, and fluorescent probes. However, their inherent sensitivity poses substantial challenges to practical implementation. In this study, we synthesized strontium-doped perovskite quantum dot (CsPbBr₃:Sr QDs) nanocomposites (CsPbBr₃:Sr QDs/MSNs) via an in-situ crystal growth method and encapsulated them within mesoporous silica nanospheres to mitigate the limitations of CsPbX₃ QDs in aqueous and polar environments. When dispersed in aqueous solutions for over one month, these nanocomposites demonstrated minimal changes in fluorescence characteristics. Under more stringent conditions (acidic, basic, and elevated temperature environments), the novel perovskite-based inorganic/organic hybrid nanocomposites exhibited superior fluorescence stability. By introducing amino functionalization, the CsPbBr₃:Sr QDs/MSNs-NH₂ achieved selective and stable detection of p-nitrophenol (p-NP), a priority pollutant in water. Due to the inner filter effect (IFE) induced fluorescence quenching mechanism, p-NP exhibited high sensitivity and selectivity within the 0–300 μM range, with a detection limit of 0.74 μM. Furthermore, analysis of actual water samples confirmed that this method offers high recovery rates and low relative standard deviations. This work underscores the promising potential of perovskite-based nanocomposites as effective fluorescent probes for water quality analysis.
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Polymers
·
2019
·Vol. 11
·期 7
·1113
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IF 3.164
Sai Chen,Yue Yu,Ruirui Cao,Haihui Liu,Xingxiang Zhang
Shape-stabilized phase change materials (SPCMs) are green, reusable energy storage materials. Because the melting temperature ofn-alkyl acrylate copolymer is adjustable by controlling the side-chain length, the appropriate melting temperature can be achieved. Poly(tetradecyl acrylate-co-hexadecyl acrylate) (P(TDA-co-HDA)) with a molar ratio of 1:1 and SPCMs were fabricated via an atom transfer radical polymerization (ATRP) method and a solution blending method with P(TDA-co-HDA) as a thermal storage material and graphene oxide (GO) as a supporting substance. In this composite, an SPCM was achieved, which absorbed heat at 29.9 °C and released it at 12.1 °C with a heat storage capacity of 70 J/g at a mass ratio of GO of 10%. The material retained its shape without any leakage at 60 °C, which was much higher than that of the melting temperature of P(TDA-co-HDA). The SPCMs exhibited good crystallization behaviors and excellent thermal reliabilities after 100 thermal cycles. The thermal properties of the P(TDA-co-HDA)/GO composite PCMs with various GO loadings were also investigated. The novel shape-stabilized PCMs fabricated in this study have potential uses in thermal energy storage applications.Keywords:shape-stabilized PCMs;alkyl acrylate;thermal energy storage;graphene oxide
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ChemistrySelect
·
2025
·Vol. 10
·期 21
·e01534
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IF 2
Yujie Chen,Qiu Shi,Jinlei Liu,Haojie Mei,Weiyin Wang,Chuanxi Xiong,Shan Wang,Yilin Tang,Shipeng Zhu
Graphical Comparative flame-retardant mechanisms of TEPP and TEOPP containing P(+III) and P(+V), respectively. Flame retardancy is essential for epoxy resins (EP) used in safety-critical applications. Although phosphorus-based flame retardants have shown effectiveness, most studies have focused on small-molecule systems, with limited attention on their oligomeric counterparts. In this study, two phosphorus-nitrogen synergistic oligomeric flame retardants with different phosphorus oxidation states—TEPP (+III) and TEPP (+V)—were synthesized and incorporated into EP. The results indicated that, when TEPP and TEOPP were added at a concentration of 5 wt%, the limiting oxygen index (LOI) values of EP/TEPP and EP/TEOPP were 35.6% and 32.6%, respectively, with the former achieving a UL-94 V0 rating. Cone calorimeter tests demonstrated that EP/TEOPP outperformed EP/TEPP in reducing heat and smoke release, suggesting distinct flame-retardant mechanisms: TEPP primarily acts in the gas phase via the release of phosphorus-containing radicals, while TEOPP promotes char formation in the condensed phase. Both systems also demonstrated good mechanical performance, owing to the hydroxyl groups and branched structures in the flame retardant molecules. This work provides valuable insight into the structure–property relationships of phosphorus–nitrogen oligomers and offers a strategy for designing high-performance flame-retardant epoxy systems.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
·
IF 8.5
Chenxi Niu,Qian Fu,Youhui Chen,Yutao Xu,Teng Long,Lingbin Lu
Ionic hydrogels, with adjustable physical and chemical properties, have been widely developed in the field of flexible sensing. The structural and functional integrity of ionic hydrogels under operational conditions is essential for their long-term stability and practical applicability. Herein, a rigid-flexible coupling crosslinking strategy was proposed, where p -phenylenediamine and urea served as complementary crosslinkers (rigid and flexible, respectively) within a carboxymethyl cellulose-based network. The rigid flexible coupling crosslinking network was constructed by a simple one-step method, enabling tunable flexibility through adjusting crosslinker ratios. This strategy not only enhanced the crosslinking density (tensile strength: 55.56 kPa) but retained the mobility of the polymer chain, endowing the hydrogel with the self-healing efficiency up to 90.41 % after 16 h and robust adhesion (221.69 kPa on aluminum). The noncovalent interactions based on aromatic rings (from benzene rings) and hydrogen bonding (from p -phenylenediamine) further contributed to these multifunctional properties. Additionally, the hydrogel exhibited high ionic conductivity (3.14 S/m) with high sensitivity (GF = 2.87 (50–200 %)) and rapid strain-responsive behavior (280 ms response and 260 ms recovery times), allowing accurate detection from subtle to large-scale body movements. These integrated advantages positioned the hydrogel as a promising candidate in the field of flexible sensing.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-14
·
IF 15.7
Wang Peng,Zhao Danyang,Zhang Peng,Hui Xiaobin,Zhang Zhiwei,Wang Rutao,Wang Chengxiang,Ge Xiaoli,Liu Xiaojing,Li Yuguang C.,Yin Longwei
The metallic phase MoS 2 (1T-MoS 2 ) supported metal-nanocatalyst is an appealing material system for accelerating the redox kinetics of non-aqueous Li | |O 2 batteries. However, the drawbacks associated with the surface orbital steric effect and the internal electron coupling results in a detrimental effect for the stability of 1T-MoS 2 , especially for the interface charge transfer. This makes it difficult to incorporate guest metal nanoparticles without compromising the 1 T phase support. To circumvent these issues, here we propose a p-block element (In-O) doping strategy to stabilize the 1 T phase MoS 2 by moderating the surface orbital steric effect and strengthening the internal chemical bonding, and thus for the epitaxial Ru nanocatalyst graft on the stabilized 1T-MoS 2 for Li | |O 2 batteries. The experimental and theoretical analyzes indicate that the In-O-MoS 2 @Ru enhances the O 2 dissociation and facilitates the adsorption of LiO 2 intermediates. This effect promotes the growth of weakly crystalline Li 2 O 2 films during oxygen reduction reaction, which can be more easily decomposed during the oxygen evolution reaction, thereby enhancing the bifunctional-catalytic kinetics. When employed at the positive electrode for non-aqueous Li | |O 2 batteries, In-O-MoS 2 @Ru shows an overpotential of 0.37 V and a cycling life of 284 cycles at 200 mA g −1 with a final discharge specific capacity of 1000 mAh g −1 at 25 °C.
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CARBOHYDRATE POLYMERS
·
2025
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IF 12.5
Fang Wang,Jiajun Wang,Wen Li,Yimao Wu,Jiaqi Liu
Smart hydrogel materials demonstrated promising application prospects in flexible electronic devices, human-machine interaction systems, and soft robotics owing to their exceptional electrical conductivity. However, significant technical challenges remained to be addressed for developing multifunctional hydrogel systems integrating both sensing and actuation capabilities. In this study, polydopamine (PDA) was employed to conduct in-situ reduction of graphene oxide (GO) under alkaline conditions, yielding reduced graphene oxide (rGO) with superior electrical conductivity and high photothermal conversion efficiency. The resulting nanomaterial was subsequently combined with natural polysaccharide starch to fabricate a poly (acrylic acid-2-hydroxyethyl methacrylate)/starch/reduced graphene oxide (P(AA-HEMA)/St/rGO) hydrogel composite. This hydrogel system exhibited not only exceptional mechanical properties (176 kPa tensile stress and 1258 % strain) and durability, but also demonstrated high conductivity (3.64 S/m) and sensitive sensing characteristics (achieving a gauge factor of 5.15 at 1300 % strain). The developed hydrogel sensor accurately detected various physiological signals including fist clenching, pulse vibration, and vocalization. Furthermore, by leveraging its excellent photothermal response properties, a three-dimensional array sensor configuration was established, enabling real-time monitoring of ambient temperature variations. Through ingenious material design and structural optimization, this research successfully developed a multifunctional smart hydrogel, providing a novel material solution for biomedical applications and flexible electronic devices.
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Scientific Reports
·
2017
·Vol. 7
·期 1
·1-7
·
IF 4.259
Cao Hongmei,Fang Xueen,Liu Peng,Li Hua,Chen Weiwei,Liu Baohong,Kong Jilie
Determination of proteins, especially low-abundance proteins with high sensitivity and specificity, is essential for characterizing proteomes and studying their biochemical functions. Herein, a novel Magnetic-Immuno-Loop-Mediated Isothermal Amplification (Im-LAMP) based on DNA-encapsulating liposomes (liposome-Im- LAMP), was developed for trace amounts of proteins. To the best of our knowledge, this is our first report about the magnetic Im-LAMP approach based on liposomes encapsulated template DNA as the detection reagent. The DNA template was released from liposomes and then initiated an Im-LAMP reaction, generating the fluorescence signal with high sensitivity and rapidity. This technique was applied for the determination of P-glycoprotein as a model protein. It was demonstrated that the technique exhibited a dynamic response to P-glycoprotein ranging from 1.6*10 −2 to 160 pg/ml with a greatly low detection limit of 5*10 −3 pg/ml (5 fg/ml) which is substantially better than conventional enzyme-linked immunosorbent assays (ELISA). This ultra sensitivity was attributed to the LAMP reaction initiated by the enormous DNA targets encapsulated in liposomes. This magnetic liposome-Im–LAMP as an alternative approach is attractive for applications in other low-abundance proteins detection in clinical diagnostics.
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ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2025
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IF 11.3
Wenjie Liao,Ling Zhou,Xiaoqiang Wang,Yue Liu,Zhongbiao Wu
Both improving the activity and reducing SO3 emissions during selective catalytic reduction of NOx by the NH3 (NH3–SCR) process over commercial V–Ti-based catalysts remain a challenge. Herein, Ce and P cooperatively modified the VMo/Ti catalyst to address this challenge. Within the temperature range of 250–350 °C, the optimal VMoCeP/Ti catalyst achieved a NO conversion of more than 95% and maintained a SO2 oxidation ratio below 1.0%. The enhanced SCR activity of the modified catalyst could be attributed to the improvement in surface acidity and redox capacity by the addition of Ce and P, which would promote NH3 adsorption and activation. Meanwhile, Ce and P coaddition could regulate the surface structure of vanadyl species from predominantly polymeric to a more dimeric form, which could also promote the SCR reaction. More importantly, except for the suppressed sulfation of vanadium species, both a lower proportion of polymeric vanadyl species and the strong interactions among V–Ce–P species could raise the energy barrier of the decomposition of sulfated vanadium species into SO3, thereby inhibiting SO2 oxidation. This work provided novel insights into developing efficient SCR catalysts with low SO2 oxidation ratios for both the academic and industrial fields.
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Inorganics
·
2025
·Vol. 13
·期 12
·402
·
IF 3
Xiangqi Lu,Hongbo Chen,Yufei Gu,Jun-Liang Chen,Jie Gao,Kun Hu,Weijiang Gan,Zhongmin Wang,Huajun Lai,Lei Miao
Silicon-based thermoelectric (TE) materials are demonstrating advanced capacity in environmental waste heat recovery. However, intrinsically high lattice thermal conductivity hinders the improvement of TE conversion efficiency. In the present work, a study of B4C composite for in situ nano-inclusions was carried out to enhance the TE properties of p-type Si80Ge20materials. During sintering, B4C was demonstrated to form the SiC and B-rich ternary with a SiGe-based matrix, and the in situ formation of diverse nano-inclusions and the B dopant significantly reduced lattice thermal conductivity without deteriorating power factor (PF), weakening the coupling relationship between thermal and electrical transport properties to a certain extent. The carrier concentration of SiGe alloy samples was significantly increased, resulting in a 7.8% enhancement ofPFfor Si80Ge20B0.5-(B4C)0.3at 873 K, while a low lattice thermal conductivity of 0.69 W m−1K−1is achieved. The optimalZTis 1.08, which increased ~50% compared to the pristine sample, and an excellent averageZTavgof 0.62 is obtained among recent p-type SiGe-based TE materials’ works. Our research provides a new perspective for the optimization and practical application of p-type silicon germanium TE materials.
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CARBON
·
2025
·
IF 11.6
Junzhu Yang,Junchen Liu,Yi Zhang,Wei Pei,Qi Xia,Sanyang Han,Yuan Lu
Efficient regeneration of the coenzymes NADH and NADPH is crucial for sustaining biocatalytic processes, particularly in driving the biocatalysis reaction. In this study, the photocatalytic properties of alkali-doped graphitic carbon nitrates were explored to achieve efficient NAD(P)H regeneration. g-C 3 N 4 doped with potassium (KOH), sodium (NaOH), and calcium (Ca(OH) 2 ) was synthesized and characterized, showing significant enhancements in light absorption, charge separation, and photogenerated electron transport. Among the synthesized photocatalysts, KOH-doped g-C 3 N 4 (KCN) exhibited the best photocatalytic performance, regenerating 95 % NADH and 92 % NADPH within 30 min. This result compares favorably with those reported in previous studies. Based on this superior performance, K-0.2 was further applied to the in vitro CO 2 reduction to formate as a proof of concept. To clarify the mechanistic insights of the improved photocatalytic performance of KCN, the chemical model of g-C 3 N 4 and KCN was established, and DFT calculations were performed to reveal the electronic structure modifications responsible for the enhanced photocatalytic activity. Furthermore, to expand the light utilization capability of the system, upconversion nanoparticles (UCNPs) were incorporated into the system to utilize near-infrared light (980 nm), which successfully achieved NADH regeneration under near-infrared excitation and extended the light absorption range of the photocatalytic system. Overall, this study demonstrated that alkali-doped g-C 3 N 4 offered a highly efficient platform for NAD(P)H regeneration, and the integration of UCNPs further enriched the coenzyme regeneration scenario, suggesting a promising strategy for advancing sustainable coenzyme regeneration technologies.
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POLYMER DEGRADATION AND STABILITY
·
2025
·
IF 7.4
Jia-Xiang Yang,Ying-Jun Xu,Ya-Wei Zheng,Wan-Meng Song,Yun Liu
Ramie fiber-reinforced epoxy composites have high mechanical strength and outstanding corrosion resistance, and are widely used in many fields. However, ramie fiber and epoxy resin are inherently flammable, and there is an increasing focus on the flame-retardant improvement of Ramie fiber-reinforced epoxy (EP/RF) composites. In this study, an eco-friendly and higher efficient P-N-B flame retardant (denoted as DBC) was synthesized and subsequently applied to ramie fabric to impart flame retardancy of EP/RF composites. When the weight gain on ramie fabric was about 10 wt%, the limiting oxygen index of EP/RF-DBC is 32.6%, and EP/RF-DBC has been upgraded from UL-94 No rating to UL-94 V-0 rating. Compared with EP/RF, the peak heat release rate and total heat release of EP/RF-DBC reduced by 31.9% and 32.0%, respectively, indicating that the introduction of DBC reduces the fire hazard of EP/RF. The presence of DBC promotes the dehydration of EP/RF into residual chars, which act as a barrier to block the exchange of heat and gas, releasing more noncombustible gases and diluting the concentration of combustible gases. In terms of mechanical properties, due to the low acidity of DBC and the presence of many amino groups in chitosan oligosaccharide, the adhesion between RF and EP is improved. The flexural strength and modulus of EP/RF-DBC are increased by 15.3% and 32.1%, respectively, compared with EP/RF.
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