JOURNAL OF POLYMER RESEARCH
·
2026
·Vol. 33
·期 9
·395
·
IF 3.5
Zhang Zhaoxin,Dong Xiang,Dai Guo-wei,Rong Caiyu,Ma Yan,Zhao Gaoxiang,Zhang Jiayi,Wei Jiahao,Lin Zixin,Nie Shibin,Tian Konghu
Currently, chitosan (CS)-based shape memory materials typically require the incorporation of reversible phases, which impair CS’s intrinsic properties. This study proposed a facile strategy to solve this problem: replacing the traditional organic reversible phases with novel functional inorganic nanomaterials. Hexagonal boron nitride (h-BN) nanosheets were modified with silver nanoparticles (AgNPs) and then used to fabricate the AgNPs@dopamine@BN/chitosan nanopaper (BDAC), a dual thermal- and electrical-triggered shape memory nanocomposite. The results show that BDAC-1 has a thermal conductivity of 1.38 W/(mK)—a 138% increase compared to neat CS—and a good electrical conductivity of 35.6 S/cm. A triple-folded BDAC-1 sample (1 × 4 cm²) fully recovered to a flat state in 43 s on a 120 °C heating platform, reaching 91.5 °C internally. Under 8.5 V, it achieved full shape recovery in 132 s, with an internal temperature of 96.7 °C. The peak heat release rate (pHRR) of BDAC-1 is only 21.4 W/g, which has decreased by 39.5% compared with the neat CS, revealing significantly improved flame retardancy. In addition, BDAC presents high-efficient thermal management performance, which alleviates the risks of heat accumulation and fire. Furthermore, we demonstrated the versatile applicability of BDAC by integrating it into thermal/electrical dual-triggered hierarchical alarm devices and micro-mechanical grippers, highlighting the exceptional application potential of this high-performance soft actuator.
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高影响因子
Advanced Fiber Materials
·
2023
·Vol. 5
·期 5
·1657-1670
·
IF 16.1
Liu Yong,Zhao Ning,Xu Jian
As portable and wearable electronic devices are rapidly developing, there is an urgent need for flexible and robust thermally conductive electromagnetic interference shielding materials to address the associated electromagnetic pollution and overheating issues. Herein, multifunctional poly(p-phenyl-2,6-phenylene bisoxazole) nanofiber/boron nitride nanosheet/Ti 3 C 2 T x MXene nanosheet (PBO/BN/MXene) composite papers are prepared by a gel microparticle-mediated ordered assembly process with the aid of vacuum-assisted filtration. Nacre-like “brick and mortar” structure, segregated structure and sandwich structure are integrated into the composite paper, so that efficient thermally and electrically conductive networks have been established. When the BN and MXene contents are 29.2 wt% and 41.7 wt%, the 13 μm thick composite paper exhibits an EMI shielding performance of 31.8 dB and a thermal conductivity of 26.1 W/mK, markedly superior to those of the control samples without the ordered structures. Meanwhile, because of the unique architecture and inherent advantages of the building blocks, the composite paper exhibits extremely low coefficient of thermal expansion (~ 1.43 ppm/K), excellent mechanical properties, and outstanding thermal stability and flame retardance, making it highly advantageous for practical applications in electronic devices. This work offers a promising approach for fabricating high-performance multifunctional composites by constructing efficient filler networks. Graphical Abstract
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Surfaces and Interfaces
·
2023
·
IF 6.2
Xiangyue Wei,Yixin Pan,Jisheng Kou,Rui Huang
The removal of selenium (IV) from aqueous solutions was the focus of research that led to the discovery of a novel type of composite adsorbent called FeS@h-BN nanocomposite . This adsorbent was studied, characterized, and put to use in a fixed bed column. SEM, FTIR, XRD, and XPS analyses were conducted to learn more about the coated layer's surface properties. The effect of several adsorbent materials on the remediation of Se(IV) in dynamic water was examined. The Adams-Bohart model, the Thomas model, and the Yoon-Nelson model were all utilized to get optimal fits to the kinetic data obtained from the adsorption process. Moreover, the Adams-Bohart model was only applicable to the beginning portion of the dynamic behavior of the FeS and FeS@h-BN columns. The Thomas and Yoon-Nelson models were sufficient for describing the breakthrough curve under all experimental conditions. For this dynamic process, the theoretical breakthrough curve profile was compared to an experimentally derived profile. It was discovered that FeS@h-BN nanocomposites are the most effective at removing Se(IV), and the adsorption of Se(IV) by a variety of adsorbent materials is enough for all three dynamic models.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Ji Shu,Yichong Zhang,Kanming Wang,Jianli Wang,Jiaxuan Ying,Hongyu Wang
Membrane filtration is regarded as one of the promising technologies for water treatment. However, insufficient micropollutants removal and membrane fouling still limited the further application. Herein, this study engineered a novel membrane hybrid system integrating typical pharmaceuticals removal and membrane self-cleaning by assembled layered MXene and hexagonal boron nitride (h-BN). By doping a small amount of MXene into h-BN (mass ratio of 1 to 10), the synergetic process of adsorption and photocatalytic degradation were achieved. Based on experimental and density functional theory (DFT) calculation results, the chemisorption-photodegradation performance of the membrane hybrid system assembled with 1/10 MXene@h-BN was significantly enhanced due to the termination group and conductive property of MXene. In addition, trimethoprim (TMP) degradation by the above membrane followed the Langmuir–Hinshelwood model, indicating pollutants removal initiated not only on the membrane surface but also in the bulk solution under simulated solar irradiation. This phenomenon was attributed to the generation of •OH and 1 O 2 by forming Ohmic contact with altered internal band structure. The durability and practical experiments with secondary effluent from local wastewater treatment were also tested. The exceptional self-cleaning performance of the membrane hybrid system assembled with 1/10 MXene@h-BN was demonstrated by lower membrane fouling and maintaining durability even after five cycles. Furthermore, the performance (both pollutants removal and flux) of the modified membrane for secondary effluent treatment was also considerable, validating its potential for practical application. Owing to the excellent features, the membrane assembled with MXene@h-BN is anticipated to be an ideal candidate for advanced wastewater treatment.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Haoyu Ma,Jiaozhu Wu,Chengzhe Gao,Silin He,Pengjian Gong,Qiwu Shi,Zhao Wang,Guangxian Li,Chul B. Park
In the context of the future sixth-generation (6G) communication system, the development of multi-functional materials with ultra-low dielectric permittivity ( D k ) and ultra-low dielectric loss ( D f ) is of paramount importance for the design of terahertz (THz) frequency electromagnetic wave transmission devices. In this work, polyimide- block -polydimethylsiloxane (PI- b -PDMS copolymer, PIC) material with low D k , high flexibility and high supercritical fluid foaming ability was fabricated via copolymerization. Additionally, core–shell SiO 2 @BN nanofillers were synthesized by condensing tetraethyl orthosilicate (TEOS) on hexagonal boron nitride (BN) nanofiller surface. Subsequently, flexible polyimide/SiO 2 @BN foam was fabricated via supercritical N 2 foaming. The resulting PIC/SiO 2 @BN nanocomposites exhibit exceptional flexibility and impressive thermal resistance (thermal decomposition temperature 472.2 °C). Notably, the incorporation of core–shell SiO 2 @BN nanofillers leads to the formation of a molecular interface anchoring structure through hydrogen bonding effect. This structure effectively reduced the mobility of the flexible PIC polymer chains on the SiO 2 @BN nanofiller surfaces. Consequently, the porous PIC/SiO 2 @BN materials show a low shrinkage ratio, low dielectric property ( D k = 1.21, D f = 0.012 at 1 THz), excellent THz transmission rate (91.4 %) and long distance 6G THz signal coverage (125.99 m). Furthermore, porous PIC/SiO 2 @BN materials show superior flame-retardant and thermal infrared stealth properties.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Huanji Song,Jiahao Sun,Lingshan Miao,Zhilong Lin,Shenghu Wang,Dongcheng Li,Weiyang Lv
Non-metallic catalysts have gained great attention in peroxymonosulfate based advanced oxidation processes (PMS-AOPs) for their enhanced safety and environmental compatibility. However, low catalytic efficiency, incomplete mineralization and harsh preparation methods still hinder their practical application. This work developed an innovative solvent-free ball milling-assisted pyrolysis strategy utilizing hexagonal boron nitride (h-BN) and multi-walled carbon nanotubes (MWCNTs) as synergistic precursors to construct the BN-CNT-700 composite. The mutually doped active sites were facilely formed through carbon/nitrogen hybridization , where electron-withdrawing C O groups dominated 1 O 2 generation while electron-donating C N sites primarily mediated SO 4 •− production. The radical and non-radical pathways worked in synergy to achieve complete removal of 20 mg·L −1 bisphenol A (BPA) coupled with an ultra-high mineralization efficiency of 88.6 %, surpassing most reported non-metallic counterparts and even outperforming various metal-based systems. Moreover, the BN-CNT-700/PMS system demonstrated exceptional environmental robustness, maintaining high BPA removal efficiency across broad pH ranges, various inorganic ions, and complex water matrices. This research offers the important implications for the rational design of non-metallic catalysts with tunable active sites for high-efficiency pollutant decontamination.
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高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2024
·
IF 4.1
Luo Fang-Hua,Dong Zhi-Tao,Chen Guo-Hua,Ma Chen,Wang Huai-Yuan
Janus films with asymmetric physical/chemical properties have attracted considerable attention due to their promising applications in personal thermal management, electronic skins, sensors, actuators, etc. However, traditional methods for fabricating Janus films conventionally need the assistance of an interface or auxiliary equipment, which are usually complex and time-consuming. Herein, flexible poly(vinyl alcohol) (PVA)/graphene oxide (GO)/h-BN (recorded as PVA/GO/h-BN) Janus films with thermally, optically, and electrically anisotropic properties are fabricated by a simple density deposition self-assembly method, which just utilizes the density difference between GO and h-BN during water evaporation. Experimental results show that the two sides of the acquired Janus films have obvious asymmetric characteristics. In the original state of the PVA/GO/h-BN Janus films, the thermal conductivity of the GO side (10.06 W·m −1 ·K −1 ) is generally lower than that of the h-BN side (10.48 W·m −1 ·K −1 ). But after GO is reduced, the thermal conductivity of the rGO side reaches 12.17 W·m −1 ·K −1 , surpassing that of the h-BN side. In addition, the relative reflectance of the h-BN side of Janus film is also significantly higher than that of the rGO side, and the surface resistance difference between the two sides is about 4 orders of magnitude. The prepared PVA/GO/h-BN Janus films show great application potential in human thermal management, light conversion switches, and electronic skins. This study provides a simple and versatile strategy for fabricating Janus films with multifunctional (such as thermal, optical, and electrical) anisotropies.
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MATERIALS & DESIGN
·
2025
·
IF 7.9
Yuannong Qu,Ji Zou,Weimin Wang,Wei Ji,Zhengyi Fu
The h-BN/ZrO 2 composites for preparing ceramic side sealing plate were obtained with spark plasma sintering (SPS) at 1700 °C for 10 min in the study. By varying AlN content from 0 to 20 wt%, we systematically explored its influence on sintering behavior, microstructure evolution, mechanical performance, and corrosion mechanism at1600 °C. Results show that the rapid heating and uniaxial pressure during SPS and the in-situ reactions between AlN and ZrO 2 promoted the densification of composites. The main reaction products were ZrN, which acted as an effective oxygen scavenger, consuming dissolved oxygen ([O]) and converting into ZrO 2 . These newly formed ZrO 2 particles filled residual porosity within the matrix and nucleated around pre-existing ZrO 2 grains, progressively coalescing into continuous Zr-rich barrier layer.Thereby preventing molten steel from further penetrating into the matrix. The corrosion depth of the composite with 5 wt% AlN content in molten steel at 1600 °C after 2 h was only 69 μm. Meanwhile, it showed a thermal conductivity of 25 W m −1 K −1 and a coefficient of thermal expansion of 3.7 × 10 -6 K −1 , demonstrating excellent thermal shock resistance. The composites are expected to be used to manufacture side sealing plates for the novel continuous casting of thin strip.
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APPLIED ORGANOMETALLIC CHEMISTRY
·
2017
·Vol. 31
·期 12
·e3854
·
IF 2.319
Xiaojun Ma,Guanghui Lv,Xu Cheng,Weijian Li,Rui Sang,Yong Zhang,Qiantao Wang,Li Hai,Yong Wu
An environmentally friendly palladium(II) catalyst supported on cyclodextrin-modified h-BN was successfully prepared. The catalyst was characterized by FT-IR, SEM, TG, XRD and XPS, and the loading level of Pd in h-BN@β-CD@Pd(II) was measured to be 0.088 mmol g −1 by ICP. It exhibits excellent catalytic activity for the Suzuki and Heck reactions in water, and can be easily separated and consecutively reused for at least nine times. In addition, a series of pharmacologically interesting products were successfully synthesized using this catalyst to demonstrate its potential applications in pharmaceutical industries. Above all, this work opens up an interesting and attractive avenue for the use of cyclodextrin-functionalized h-BN as an efficient support for hydrophilic heterogeneous catalysts.
研究领域:
材料科学
·
催化化学
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Journal of Materials Research and Technology-JMR&T
·
2026
·
IF 7.3
Lihao Yang,Pengpeng Yu,Binglong Jiao,Qingwen Yang,Shuqi Ding,Pingping Jia,Yaokun Pan
To address the inherent microporosity and inadequate long-term corrosion protection capacity of plasma electrolytic oxidation (PEO) ceramic coatings deposited on 6063 aluminum alloy substrates, a hierarchical Ce-doped PEO/h-BN/diamondlike carbon (DLC) composite coating architecture was fabricated via combined hydrothermal pore sealing and plasma enhanced chemical vapor deposition (PECVD) post treatment routes. The microstructure, chemical composition, and corrosion behavior of the coatings were systematically characterized using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, Fourier-transform infrared spectroscopy (FT-IR), potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS). The results demonstrated that hydrothermal treatment effectively introduced h-BN nanosheets into discharge channels and the micropores of the Ce-doped PEO coating. XPS, Raman, and FT-IR analyses confirmed the successful incorporation of h-BN while preserving its characteristic layered structure. Subsequently, a continuous DLC film containing typical sp 2 /sp 3 hybridized carbon bonds was successfully deposited by PECVD. Among all tested processing parameter combinations, the composite coating modified with 1 g L −1 h-BN hydrothermal sealing followed by 60 min PECVD deposition delivered optimal comprehensive anticorrosion performance, featured by a minimum corrosion current density of 1.76 × 10 −9 A cm −2 and the highest impedance response in 3.5 wt% NaCl solution. The significantly improved anticorrosion performance originates from the dual synergistic barrier effect derived from h-BN nanosheet pore plugging and the dense DLC outer capping layer. Specifically, h-BN nanosheets effectively reduced pore connectivity and prolonged the diffusion path of corrosive species, whereas the dense DLC overlayer served as additional physical barrier that suppressed electrolyte penetration and interfacial charge transfer. This study provides valuable experimental guidance and theoretical support for the design of graded ceramic-carbon composite protective coatings for aluminum alloys serving in high chloride marine environments.
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Yonghai Gou,Rui Zhang,Jun Pang,Zhenzhen Qiu,Chaochao Dong,Huidong Mo,Xiaoli Wu,Jilin Wang
Garnet transparent ceramics are promising color converters for white laser diodes (LDs) because of their efficient broadband emission and favorable thermal properties. Herein, composite color converters were prepared by integrating the Lu 3 Al 5 O 12 :Ce 3+ (LuAG:Ce) transparent ceramics with h-BN modified Mg 2 Al 4 Si 5 O 18 : Eu 2+ (MAS:Eu) phosphor-in-glass films (PiGFs). Under 450 nm excitation, the LuAG: Ce-BN-MAS:Eu composites exhibit broad emission bands ranging from 480 to 720 nm, and the relative Eu 2+ /Ce 3+ emission intensity ratio rises with increasing h-BN content. The optimized LuAG:Ce-2BN-MAS:3Eu sample shows the highest emission intensity, with an internal quantum efficiency of 92.46% and an external quantum efficiency of 42.83%. In addition, the emission intensity at 150 °C retains 94.56% of that at room temperature. Under blue-laser irradiation at 12.5 W∙mm -2 , the steady-state temperature of light spot remains below 76.7 °C. The constructed laser-driven lighting device exhibits a luminous efficacy of 83.45 lm∙W -1 , a correlated color temperature of 6103 K and a Ra of 85.8. These results indicate that the LuAG:Ce-BN-MAS:Eu composites exhibit great potential for high-color-rendering white LDs.
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高影响因子
POLYMER BULLETIN
·
2026
·Vol. 83
·期 7
·401
·
IF 4.2
Liu Deyu,Ba Xuan,Wu Shaoyuan,Hu Jinghan,Duan Jihong,Guan Xingyu,Zhou Guoyong,Wang Kui,Huang Weijiang,Yan Wei
Waterborne polyurethane (WPU) has the advantage of good flexibility in the coating film, high and low-temperature resistance, and the advantages of environmental protection. Currently, there is a high demand for flame-retardant WPU. Herein, a flame-retardantcomposites (WPU/BN@APP/DIDOPO) is successfully developed by incorporating ammonium polyphosphate (APP) modified boron nitride (BN@APP) and DOPO derivatives into WPU via simple casting technology.The results indicate that BN@APP formed the intended composite structure and was well dispersed in the WPU matrix. This system significantly enhanced the char residue at 700 ℃ from 0.23% to 5.22% and reducing the peak heat release rate (pHRR) and total heat release (THR) by 58.9% and 36.9%, respectively, compared to pure WPU. Performance analysis shows that during combustion, a dense and stable expanded carbon layer forms, effectively delaying heat and mass transfer. The mechanical properties of the WPU/0.5BN@APP/5DIDOPO composite material are optimal and its breaking strength and elongation at break are superior to those of components. This work demonstrates the potential of the BN@APP/DIDOPO composite system for enhancing flame retardancy in polymeric materials, providing valuable insights for designing advanced flame-retardant systems.
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高影响因子
危险品化学品经营许可证（带存储）