JOURNAL OF THE AMERICAN CERAMIC SOCIETY
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2025
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IF 3.8
Jianning Zhang,Yanpei Dang,Tianhao Li,Yangzhong Zhao,Liantai Duan,Ke Chen,Xiao Zhang,Hengli Duan,Wensheng Yan,Sihua Feng,Gang Shao,Zhaoju Yu,Qing Huang,Yujie Song
Silicon boron carbonitride (SiBCN) ceramics have garnered significant attention due to their exceptional high-temperature stability, resistance to creep, and favorable electrical properties. However, the ceramicization mechanism of covalently bonded boron atoms in polyborosilazane (PBSN), which is crucial in determining the structural and crystalline phase evolution of silicon boron carbonitride (SiBCN) ceramics through the polymer-to-ceramic process, still needs further clarification for the design of advanced ceramics. Therefore, PBSN precursors constructed with B–C bonds were systematically investigated in the polymer-to-ceramic conversion process. B–C bonds were transformed into B-N bonds between 300°C and 600°C, ultimately resulting in the formation of h-BN at high temperatures. Meanwhile, higher levels (8.11–14.12%) of B facilitated the formation of SiC at equivalent temperatures but hindered the formation of Si 3 N 4 crystal nuclei. That is due to the formation of B–N and NB 3 units, which inhibited the formation of Si–N bonds and SiN 4 units, thereby interfering with the nucleation process of Si 3 N 4 and facilitating the crystallization of SiC. This study offers valuable insights for regulating the microphase evolution and properties of PDC nanocomposites.
研究领域:
材料科学
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陶瓷材料
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聚合物衍生陶瓷
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固态化学
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高温材料
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Xiaoxiao Wang,Yanmei Yang,Zhiqing Zhou,Yuling Zhong,Miaomiao Qin,Weiqing Wang,Weifeng Li,Bo Tang
5-hydroxymethylfurfural (HMF) is one of the most promising biomass-based chemicals that is used to produce many kinds of important compounds. Especially, the selective conversion of HMF to 5-hydroxymethyl-2-furancarboxylic acid (HMFCA), an important chemical feedstock, has high industrial significance but is technically challenging. In this study, we present a high-performance photocatalyst for selective oxidation of HMF to HMFCA. By integrating an ultrasmall amount of palladium (Pd) nanoclusters (1.12‰ in weight) on defective hexagonal boron nitride nanosheets (Pd/defective h-BN nanosheets (dh-BNs)), outstanding photocatalytic performance can be achieved, resulting in up to a 95% HMF conversion ratio with an 82% HMFCA selectivity. The performance is considerably higher than that of pristine dh-BNs and Pd on defect-free h-BNs. More importantly, this Pd/dh-BNs catalyst maintains a high catalytic activity after eight cycles, demonstrating robust catalytic stability. Density functional theory calculations indicate that Pd/dh-BNs can lower the energy barrier for HMF oxidation and facilitate the desorption of HMFCA, which contributes to the high selectivity catalytic performance. This study not only introduces a promising photocatalyst for sustainable chemical transformations but can also provide valuable insights into the design of advanced photocatalytic material for biorefinery applications.
研究领域:
材料科学
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化学工程
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环境科学
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DOI
PubMed
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2021
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IF 3.927
Yefei Zhang,Yu Chen,Yunrui Hei,Shan Wang,Yingying Shi,Fengzhi Jiang,Lijun Luo
In this work, novel photocatalytic C-doped Bi 2 O 3 nanowires were prepared by a facile method using BN-0.5 adsorbent as a precursor. BN-0.5 adsorbent with nanowire structure was successfully synthesized by a novel solvothermal method by controlling the dosage of 1, 4-benzenedicarboxylic acid (H 2 BDC). BN-0.5 was not only used as template in the preparation to maintain the nanowire structure, but also as a source of C. The C elements could not only enhance the absorption of BPA, but also enhance effective spatial separation of photo-generated e − /h + pairs. As a consequence, the removal ratio of BPA over C-doped Bi 2 O 3 nanowires could reach 98.9%, after only 24 min of illumination. The removal mechanism of BPA on the C-doped Bi 2 O 3 nanowires was discussed. More importantly, this work provides a facile method for the preparation of C-doped Bi 2 O 3 nanowires, which are potential photocatalysts for treatment of water and are also suitable for mass production. These findings will help to design ideal structure, understand catalytic mechanism and spur development of solar driven technologies for environmental remediation.
研究领域:
材料科学
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环境科学
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化学工程
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DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2026
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IF 0
Su Yi,Zhang Jie,Zhao Yang,Feng Qinjing,Zhai Hongfan,Liu Jiawang,Yang Fengli
Tetracycline (TC), as a widely used antibiotic, poses significant environmental safety risks due to its persistence and bioaccumulation. Titanium dioxide (TiO 2 ) is a wide bandgap photocatalyst, and it only responds to ultraviolet light and has a low utilization of visible light, which severely restricts its applications. In this study, 12%BN/TiO 2 nanosheets obtained by a simple hydrothermal method combining hexagonal boron nitride (h-BN) and titanium dioxide (TiO 2 ) and the removal rate of TC almost reaches 99.7% within 30 min under simulated sunlight. Moreover, there was almost no change in the activity of the catalyst after it was recycled five times. XPS results demonstrate that the formation of the B-O-Ti bond in 12% BN/TiO 2 leads to a rearrangement of the energy levels within TiO 2 . This structural modification effectively narrows the band gap of the material, thereby significantly enhancing its ability to utilize visible light. Furthermore, the interfacial effect between h-BN and TiO 2 enhances the separation and migration of photogenerated electron–hole pairs. •O 2 − radicals are the main active species in the degradation of TC. This study confirmed that the BN/TiO 2 system had excellent photocatalytic activity and provides an effective approach for constructing high-performance photocatalysts. Graphical
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PubMed
Materials
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2020
·Vol. 13
·期 21
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IF 3.057
Lijuan He,Junji Zeng,Yuewu Huang,Xiong Yang,Dawei Li,Yu Chen,Xiangyu Yang,Dongbo Wang,Yunxiao Zhang,Zhendong Fu
Low-density polyethylene (LDPE), as an excellent dielectric insulating material, is widely used in electrical equipment insulation, whereas its low thermal conductivity limits its further development and application. Hexagonal boron nitride (h-BN) filler was introduced into LDPE to tailor the properties of LDPE to make it more suitable for high-voltage direct current (HVDC) cable insulation application. We employed melt blending to prepare h-BN/LDPE thermally conductive composite insulation materials with different contents. We focused on investigating the micromorphology and structure, thermal properties, and electrical properties of h-BN/LDPE composites, and explained the space charge characteristics. The scanning electron microscope (SEM) results indicate that the h-BN filler has good dispersibility in the LDPE at a low loading (less than 3 phr (3 g of micron h-BN particles filled in 100g of LDPE)), as well as no heterogeneous phase formation. The results of thermal conductivity analysis show that the introduction of h-BN filler can significantly improve the thermal conductivity of composites. The thermal conductivity of the composite samples with 10 phr h-BN particles is as high as 0.51 W/(m·K), which is 57% higher than that of pure LDPE. The electrical performance illustrates that h-BN filler doping can significantly inhibit space charge injection and reduce space charge accumulation in LDPE. The interface effect between h-BN and the substrate reduces the carrier mobility, thereby suppressing the injection of charges of the same polarity and increasing the direct-current (DC) breakdown strength. h-BN/LDPE composite doped with 3 phr h-BN particles has excellent space charge suppression effect and high DC breakdown strength, which is 14.3% higher than that of pure LDPE.
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高影响因子
Results in Chemistry
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2026
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IF 5.8
Yige Yan,Ming Fu,Jiaqi He,Dawei He,Yongsheng Wang
The practical application of aqueous supercapacitors is constrained by the balance between cycle life and power characteristics. This study develops a composite electrode based on hexagonal boron nitride/carbon nanotubes (h-BN/CNTs), featuring fabrication processes through thermal annealing and electrostatic assembly. The material ingeniously combines the chemical inertness and structural stability of h-BN with the conductive network of CNTs, successfully constructing an electrode with highly stable mechanical and electrochemical interfaces. The assembled symmetric supercapacitor demonstrates excellent long-term operational reliability, maintaining over 90% stability after 10,000 charge-discharge cycles while exhibiting outstanding rate performance. The core value of this work lies in its application to h-BN platforms for high-power, high-frequency optical devices, successfully transforming it into a high-performance electrochemical energy storage component. The material has a high power density of 600 W/kg and a fairly good energy density of 13.6 Wh/kg in the symmetric two-electrode test. This device construction strategy based on a unified core material system creates compatibility advantages for material substrate and process-level integration with high-power optical devices, providing a material foundation for developing next-generation optoelectronic integrated systems.
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高影响因子
CERAMICS INTERNATIONAL
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2021
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IF 4.527
Minggan Chen,Jiwei Xie,Canguang Xiong,Hui Wang
Porous oil absorbents have been extensively studied in recent years. Boron nitride (BN) is an ideal inorganic material to withstand severe absorption conditions due to its excellent inertness and high-temperature resistance. A large challenge of BN aerogels is their high preparation costs due to requiring high temperatures and dangerous atmospheres. A facial synthesis of h-BN-based aerogels by the cast-freezing method is reported here, which has the advantages of producing a light and recyclable material (~0.035 g/ml) at a low cost and with low energy consumption. In this work, carboxymethylcellulose (CMC) is used as the compounder to interact with BN and form an aerogel that has controllable porosity (38–86 μm) and hydrophobicity (~140°). The porous structure, components, and reaction mechanisms are analyzed by SEM, XRD , mercury porosimetry , etc.. The pore distributions can be controlled by the concentrations of CMC and crosslinking agents. The intercalation effect on BN is carried out by CMC, which increases the specific surface area. Finally, the oil absorption performances are measured. The oil absorption capacity is up to 31.55 g/g (~97% ml/ml) because of the high specific surface area of the prepared material; additionally, the capacity of this material shows no obvious decrease after 6 cycles. Therefore, h-BN-based aerogels are expected to be applied in the oil absorption field and have the potential to be applied in the biochemical and nuclear fields.
研究领域:
材料科学
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环境科学
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化学工程
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DOI
高影响因子
ELECTROCHIMICA ACTA
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2020
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IF 6.215
Huiying Ouyang,Weifeng Li,Yumei Long
Since dopamine (DA) is one of the central neurotransmitters and plays an important role in the human metabolism, its accurate detection is crucial for the diagnosis of DA-linked diseases. Herein, we demonstrated a novel electrochemical sensor for DA detection based on carbon-doped hexagonal boron nitrogen (C-hBN). C-hBN was prepared via a thermal polymerization process using melamine borate as a precursor. The successful C-doping was evidenced by fourier transform infrared (FTIR), photoluminescent (PL) and x-ray photoelectron spectroscopy (XPS). The carbon-doping can increase reactive sites and facilitate electrons transfer in h-BN, which was confirmed by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The C-hBN modified glassy carbon electrode (C-hBN/GCE) exhibited the enhanced electrocatalytic activity toward DA redox, whose CV peak current is 2.8 and 4.3 times higher than those of pure h-BN modified and bare GCEs, respectively. Based on CV method, the C-hBN/GCE presented a low detection limit of 5.8 nM (S/ N = 3) and a sensitivity of 2037 µA•mM•cm −2 . The linear response ranges were over the DA concentrations of 0.01–40 µM and 40–300 µM, respectively. In addition, the sensor was applied to detect DA in real samples including human serum and urine, and satisfactory results were achieved. The results suggested that the defect-engineered h-BN holds great potential for the development of electroanalytical devices with high-performance.
研究领域:
分析化学
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材料科学
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电化学
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生物传感器
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DOI
高影响因子
ADVANCED MATERIALS
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2023
·Vol. 35
·期 25
·2209452
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IF 29.4
Pei Li,Wei Cheng,Yifan Zhou,Dong Zhao,Jun Liu,Lingxi Li,Xiaoping Ouyang,Bo Liu,Wenbao Jia,Qiang Xu,Kostya (Ken) Ostrikov
State-of-the-art thermal neutron scintillation detectors rely on rare isotopes for neutron capture, lack stability and scalability of solid-state scintillation devices, and poorly discriminate between the neutron and gamma rays. The boron nitride (BN)-CsPbBr 3 perovskite nanocomposite aerogel scintillator enables discriminative detection of thermal neutrons, features the largest known size (9 cm across), the lowest density (0.17 g cm −3 ) among the existing scintillation materials, high BN (50%) perovskite (1%) contents, high optical transparency (85%), and excellent radiation stability. The new detection mechanism relies on thermal neutron capture by 10 B and effective energy transfer from the charged particles to visible-range scintillation photons between the densely packed BN and CsPbBr 3 nanocrystals. Low density minimizes the gamma ray response. The neutrons and gamma rays are discriminated by complete decoupling of the respective single pulses in time and intensity. These outcomes open new avenues for neutron detection in resource exploration, clean energy, environmental, aerospace, and homeland security applications.
研究领域:
材料科学
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核物理学
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辐射探测技术
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PubMed
高影响因子
CERAMICS INTERNATIONAL
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2014
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IF 2.086
Yin Xu,Tianyu Ma,Xinhua Wang,Yinzhu Jiang,Mi Yan
Influences of ZrO 2 additive on the microstructure and high temperature oxidation behavior of h-BN/ZrO 2 composites have been investigated. In addition to the enhanced strength , the oxidation reaction between boron and oxygen can be effectively hindered even at 1200 °C when adding 20 wt% ZrO 2 into the h-BN matrix. Besides the doped ZrO 2 particles, ZrB 2 and ZrB were also formed in the composites after sintering via the reaction between ZrO 2 and h-BN. The oxidation product ZrO 2 of these Zr–B compounds can act as protective layer during oxidation, which covers the sample surface and prevents further penetration of oxygen. Good oxidation resistance at 1200 °C and high strength make h-BN/ZrO 2 composites promising materials for high temperature applications.
研究领域:
材料科学
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高温材料
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DOI
高影响因子
ACS Applied Electronic Materials
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2022
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IF 4.494
Senyuan Yang,Zhengyong Huang,Qinghua Hu,Yingfan Zhang,Feipeng Wang,Haohuan Wang,Yingying Shu
The power electronics tend to become miniaturized and multifunctionalized, such as thermal rotators, circuit breakers, and microchips, which have necessitated creating instruments for investigating thermal mechanisms and enhancing thermal conductivity. In this paper, we construct the heat flow network of spherical boron nitride (BN) and used multiscale spherical BN to improve the thermal conductivity of the composite synergistically. The multiscale spherical filler ratio optimization model based on the Dinger–Funk particle stacking theory is established, which obtained the optimal volume ratio of 0.224:0.374:0.402 with D50 of 20, 70, and 160 μm. Meanwhile, the effects of multiscale filler ratio, morphology, filler content, and temperature are investigated. The thermal conductivity of composites can reach up to 1.84 W/(m·K) at 20 vol %. Significantly, the thermal conductivity of composites is 4.82 W/(m·K) at 30 vol %, which is achieved by optimizing the multiscale filler and particle size distribution.
研究领域:
材料科学
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热物理学
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DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 11
·1860
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IF 5.719
Dan Li,Mengyuan Li,Shiping Zhu,Yanmei Gao,Mengyao Mu,Ning Zhang,Youmei Wang,Minghua Lu
Sample pretreatment plays important role in the analysis and detection of trace pollutants in complex matrices, such as environmental and biological samples. The adsorption materials of sample pretreatment receive considerable attention, which has a significant effect on the sensitivity and selectivity of the analytical method. In this work, the porous hexagonal boron nitride (h-BN) was utilized as a coating material of solid-phase microextraction (SPME) to extract and preconcentrate polycyclic aromatic hydrocarbons (PAHs) prior to separation and detection with GC-FID. Attributed to the multiple interactions including hydrophobicity, hydrogen bonding and strong π–π interaction, the h-BN coating showed excellent extraction performance for PAHs. Under the optimal conditions, the method showed the linear relationship in the range of 0.1–50 ng mL−1for acenaphthene, 0.05–50 ng mL−1for pyrene, and 0.02–50 ng mL−1for fluorene, phenanthrene and anthracene with a correlation coefficient (R2) not lower than 0.9910. The enrichment factors were achieved between 1526 and 4398 for PAHs with h-BN as SPME fiber coating. The detection limits were obtained in the range of 0.004–0.033 ng mL−1, which corresponds to 0.08–0.66 ng g−1for soil. The method was successfully applied to analysis of real soil samples. The recoveries were determined between 78.0 and 120.0% for two soil samples. The results showed that h-BN material provided a promising alternative in sample pretreatment and analysis.Keywords:sample pretreatment;solid-phase microextraction (SPME);hexagonal boron nitride (h-BN);nanomaterials;polycyclic aromatic hydrocarbons (PAHs);soil
研究领域:
分析化学
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环境科学
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DOI
PubMed
高影响因子
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