Journal of Materials Research and Technology-JMR&T
·
2024
·
IF 6.2
Xinyue Mao,Qingnan Meng,Sifan Wang,Shiyin Huang,Mu Yuan,Yuting Qiu
To effectively inhibit the thermal oxidation and thermal failure of diamonds when working in a high–temperature aerobic environment, a Mo–B–C coating was designed and prepared to protect diamonds from oxidation. A two–step synthesis method was used to form coatings with different B contents on diamonds by adjusting the reaction temperature, and the oxidation kinetics and oxidation mechanism of the coated diamonds were investigated in the temperature range of 700°C–1200 °C. The mechanism of diamond protection in this study was the preferential oxidative sacrifice of Mo–B–C coatings to form a stable oxide layer on the diamond surface. For low–B coatings, the four stages of coating oxidation, low-temperature volatilization of MoO 3 , stable protection by B 2 O 3 , and rapid evaporation of B 2 O 3 were experienced sequentially with an increase in temperature. For high–B coatings, the preferential self-healing flow of B 2 O 3 not only inhibited the volatilization of MoO 3 but also provided a reducing environment for MoO 3 to generate high melting–point MoO 2 and Mo 2 C, which resulted in the formation of a double synergistic protective oxide layer and greatly enhanced the oxidation resistance of diamonds. Meanwhile, the protection of the oxide layer also maintained the compressive strength of diamonds under a high–temperature oxidizing atmosphere, indicating its excellent high temperature applicability. This study provides an effective method for enhancing the high–temperature oxidation resistance and strength of diamonds, which can be effectively applied to the extreme environmental use of diamond tools.
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高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2013
·Vol. 73
·期 11
·1553-1558
·
IF 2.505
Bo Yang,Wenhui Wu
A cellulose-based paper chemodosimeter was designed and prepared by reactions of Rhodamine B with natural cellulose paper. Its sensing property to Hg 2+ was investigated by fluorescence spectroscopies . While the Hg 2+ -indicating paper was immersed into the Hg 2+ solution, the ring of the rhodamine spirolactam opened and the thiosemicarbazide moiety would undergo an irreversible desulfurization reaction to form its corresponding oxadiazole structure, a colorful and fluorescent product. The color change can be discerned by a naked eye under the irradiation of 365 nm UV light . The Hg 2+ -indicating paper displayed excellent selective toward Hg 2+ over other commonly metal ions and the sensitive detection of Hg 2+ was not interfered by other heavy metal ions. The results suggested that the Hg 2+ -indicating paper would serve as a practical fluorescent chemodosimeter for rapid and convenience detection of Hg 2+ .
研究领域:
分析化学
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环境监测
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材料科学
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生物传感
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重金属检测
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2013
·
IF 5.825
Fa-tang Li,Xiao-jing Wang,Ye Zhao,Ji-xing Liu,Ying-juan Hao,Rui-hong Liu,Di-shun Zhao
A facile and green method was developed for the simultaneous doping of nitrogen, boron, and fluorine in TiO 2 by H 2 TiO 3 via a microwave-assisted route. The ionic liquid (IL) [BMIm]BF 4 serves not only as microwave absorbent but also as a dopant. The IL also shows the ability to self-assemble under microwave irradiation, which causes it to act as an inhibitor for the growth of the TiO 2 particles. The N–B–F-tri-doped TiO 2 obtained exhibits large specific surface area, small crystal size, and a mesoporous structure, and the mechanism for the formation of the N–B–F-tri-doped TiO 2 was proposed. The prepared materials exhibit excellent visible light photocatalytic activity in the degradation of organic pollutants, including methyl orange, rhodamine B, Orange G, and reactive red X, which is attributed to the presence of a Ti–B–N structure on the TiO 2 surface, inducing a narrow band gap of 2.78 eV, and the synergistic effects of N, B, and F, which improve the separation efficiency of the photo-generated electron/hole pairs. The results obtained may provide a new sight for the application of ILs in the microwave-assisted preparation of nanomaterials.
研究领域:
材料科学
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光催化
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纳米材料
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绿色化学
·
环境工程
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.3
Canglong Li,Xuechi Lu,Tangkun Li,Xinshuai Niu,Boyuan Zou,Xuanjie Li,Yao Zhao,Yang Lu,Yongsong Luo
The heavy rare earth-based quaternary double perovskite Gd 2 B TiO 6 is expected to become one of the candidate materials for magnetic refrigeration due to its high chemical stability, low magnetic ordering temperature, and giant magnetocaloric effect. This work conducted experimental investigation on the structure, magnetic behavior, and magnetocaloric property of B -site low, medium and high-entropy Gd 2 B TiO 6 structural oxides. The structural analyses indicate that the prepared samples belong to a monoclinic double perovskite structure with uniform composition. The magnetic measurement results indicate that these samples exhibit a reversible magnetization process. Remarkable magnetocaloric effect is observed at the lowest measured temperature despite a lack of magnetic order. Large paramagnetic moment of Gd 3+ could play an important role. The values of magnetic entropy change -∆ S M ( T ) ( T = 4 K, Δ H = 6 T) are 27.2, 30.3, 28.7, 32.1, and 25.1 J·kg -1 ·K -1 for Gd 2 ( B )TiO 6 , Gd 2 (2 B 1/2 )TiO 6 , Gd 2 (3 B 1/3 )TiO 6 , Gd 2 (4 B 1/4 )TiO 6 , and Gd 2 (5 B 1/5 )TiO 6 , respectively. This work may provide some inspiration for the design and development of low-temperature magnetic refrigeration materials.
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DOI
高影响因子
NATURAL PRODUCT RESEARCH
·
2026
·
IF 1.8
Qiao-Long Hao,Han-Mei Bai,Lei Miao,Shuang Yao,Chuan-Rui Zhang
The first phytochemical investigation of Tarlmounia elliptica (the sole species of its genus) led to the isolation of eight compounds from its aerial parts, including a previously undescribed seco-norlignan, tarlelliptin A (1), and a rare ring B aromatic 1(10→6)abeo-ergostane-type steroid, tarlelliptin B (2). Their structures were fully characterised by comprehensive spectroscopic analysis (HRESIMS, 1D/2D NMR) and corroborated by quantum chemical calculations (including ECD and NMR computations). Biological evaluation for cytotoxic, anti-inflammatory, and antibacterial activities indicated that only the known compound 7-oxo-β-sitosterol (8) exhibited weak antibacterial activity (MIC = 64.0 μg/mL) against methicillin-resistant Staphylococcus aureus (MRSA) strain 252.
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PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Zhe Guo,Jia Ling Li,Jia Min Lin,Tu Lai Sun,Yu Hui Huang,Xiao Li Zhu,Xiao Qiang Liu,Xiang Ming Chen
Hybrid improper ferroelectrics (HIFs) have attracted increasing scientific attention due to their unique coupling between structural distortion and polarization, offering a highly promising platform for ferroelectrics and single-phase multiferroics with intrinsic electric field-controlled magnetism. While, the intrinsically high coercive fields ( E c ) have been remained as a big issue. In the present work, we demonstrate a synergistic A / B -site co-substitution strategy in La 2 Sr 1- x Ca x (Sc 1- x Fe x ) 2 O 7 ceramics to reshape the ferroelectric energy landscape. Consequently, room-temperature ferroelectricity with a remarkably reduced E c to approximately 6 kV/cm, a record low value for bulk HIFs, was achieved in La 2 Sr 0.7 Ca 0.3 (Sc 0.7 Fe 0.3 ) 2 O 7 ceramics. This reduction is primarily attributed to a significant structural evolution within the ferroelectric domains, specifically the A -site cation disorder induced by co-substitution triggers a distinct transition from coarse stripe domains to refined stripe nanodomains. Moreover, the correlation between Curie temperature and tolerance factor of La 2 Sr 1- x Ca x (Sc 1- x Fe x ) 2 O 7 breaks the linear relationship previously established in A -site cation-disordered La 2 SrSc 2 O 7 , demonstrating that the co-substitution of Ca 2+ and Fe 3+ cations plays a significant role in thermodynamically stabilizing the ferroelectric phase. Furthermore, A weak short-range magnetic order is observed in La 2 Sr 0.7 Ca 0.3 (Sc 0.7 Fe 0.3 ) 2 O 7 ceramics. This work highlights the importance of A / B -site co-substitution in designing novel HIFs and discovering single-phase multiferroic materials.
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Jiankun Li,Shang Wu,Quanlu Yang,Huize Zhang,Chenxu Zhu,Xiaoyi Meng,Xiaojun Yang,Qiong Su,Shuhe Kang,Juzhen Kang,Wei Lan
HS-FeNi-BNC is synthesized via B-bridging, with hollow porous carbon and Fe-B-Ni diatomic sites. • Fe-B-Ni bridge enables p-d hybridization to tune metal sites' electronic structures. • HS-FeNi-BNC delivers exceptional ORR/OER/HER electrocatalysis in alkaline media. • HS-FeNi-BNC-based ZABs operate from −10 to 60 °C with 92.9% Zn utilization efficiency. Rechargeable zinc-air batteries (ZABs) require efficient electrocatalysts to boost the sluggish oxygen reduction reaction (ORR)/ oxygen evolution reaction (OER) kinetics at the air cathode. However, designing high-activity catalysts faces considerable challenges due to spatial and electronic constraints. Herein, a boron-doped hollow spherical porous carbon (HS-FeNi-BNC) anchored with Fe-B-Ni diatomic sites is prepared via a facile B-bridging strategy, realizing the regulated construction of heteroatom doping and diatomic active sites. HS-FeNi-BNC possesses abundant micropores/mesopores, uniformly dispersed Fe Ni diatomic centers (0.27 nm spacing) with a Fe-B-Ni bridge structure, and topological carbon defects induced by B/N co-doping. HS-FeNi-BNC exhibits exceptional trifunctional electrocatalytic performance in alkaline electrolytes, with an ORR E 1/2 of 0.864 V, an OER overpotential of 308 mV and a hydrogen evolution reaction (HER) overpotential of 301 mV at 10 mA cm −2 . HS-FeNi-BNC-based ZABs achieve an outstanding wide-temperature operating range of −10 °C to 60 °C, a specific capacity of 761.51 mAh g −1 and a Zn utilization efficiency of 92.9%, outperforming Pt/C + RuO 2 -based ZABs. Density functional theory (DFT) calculations reveal that the Fe-B-Ni bridge structure triggers p-d orbital hybridization, regulating metal site electronic structures, optimizing reaction intermediate adsorption and accelerating interfacial electron transfer. This work advances the development of high-efficiency heteroatom-modified non-noble metal multifunctional catalysts. Download: Download high-res image (207KB) Download: Download full-size image
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DOI
PubMed
高影响因子
Materials Research Express
·
2019
·Vol. 6
·期 10
·106108
·
IF 1.449
Wenli Pei,Xiaohan Zhang,Qinyu Meng,Jifeng Zhou,Yaozu Guo,Junhua You,Dong Zhao,Xiaoyang Wang
Nd-Fe-B nanoparticles have been successfully prepared by using an optimized low-energy chemical method. The effects of reduction-diffusion time on the microstructure and properties of Nd-Fe-B nanoparticles were investigated by using TEM, XRD, SEM, VSM and Rietveld calculations. The results showed that when the reduction-diffusion time was short, the reaction was not sufficient, which resulted in a residual H5Nd2 phase. When the reduction-diffusion time was prolonged, the H5Nd2 phase gradually decreased and the relative crystallinity of Nd2Fe14B phase gradually increased. Moreover, the grain size grew and the rich Nd phase appeared gradually around the grains. Furthermore, as the reduction-diffusion time was prolonged, the coercive force of Nd-Fe-B nanoparticles increased first and then decreased. When the holding time was extended to 180 min, the coercive force reached a maximum of about 4.85 kOe and the magnetic energy product was about 2.5 MGOe.
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高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2026
·
IF 4.1
Li Han-Yue,Zhang Han,Cai Zheng-Xiao,Yin Ming-Ze,Wang Xian-Hua,Ran Rui-Xue
Candida albicans ( C. albicans ) is an opportunistic pathogenic fungus that poses a threat to public health and food safety, while conventional detection methods suffer from high costs, complicated procedures, and insufficient sensitivity. Here, a novel biomolecule-free sandwich detection platform was constructed to quantitatively detect C. albicans by integrating phenylboronic acid-functionalized magnetic microspheres (PFSEPD) and amphotericin B-labeled time-resolved fluorescent microspheres (ATFM). The stepwise synthesis of PFSEPD was verified through multiple characterizations, and the as-prepared PFSEPD exhibited favorable monodispersity, rapid magnetic responsiveness, and low preparation cost, with adsorption data well fitted by the Langmuir isotherm and pseudo-second-order kinetic models. Meanwhile, the ATFM signal probe was synthesized by covalently grafting amphotericin B (AmB) onto carboxylated time-resolved fluorescent microspheres (TFM). In the established dual-chemical recognition sandwich system, PFSEPD rapidly captured the fungus through boronate- cis -diol specific affinity, while ATFM selectively labeled the captured C. albicans through AmB-ergosterol interactions. After elution with SDS buffer, the fluorescent signal of the released ATFM was quantitatively measured. The PFSEPD-ATFM detection strategy achieved limits of detection (LODs) of 46 and 40 CFU mL −1 in milk and honey, respectively, with recoveries of 96.2%–101.8% and relative standard deviations (RSDs) less than 5.0%. This dual-chemical recognition sandwich system provides a facile, sensitive alternative for the rapid and quantitative detection of C. albicans . Graphical abstract
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Peng Su,Rui Feng,Ling Zhou,Bowei Liu,Tong Zhou,Ruoyu Dong,Lijie Dong
A microphase-separated block copolymer enables resilient BTO-based composites. • PS-rich rigid nanodomains promote stress dispersion in the composite. • Reduced hysteresis and improved cyclic compression stability are achieved. • 98.4% response retention and intact interface remain after 10,000 cycles at 100 N. Stable mechano-electric response under repeated contact and compression is in high demand for resilient piezoelectric composites used in embodied intelligence and human-machine interfaces. Such composites are commonly fabricated by dispersing high-performance ceramic fillers into elastomeric matrices. However, stable mechano-electric response relies on efficient and durable stress transfer from the soft matrix to the piezoelectric phase, which is hindered by the stiffness disparity, often approaching five orders of magnitude, between rigid ceramic fillers and MPa-level soft elastomers. The soft matrix dissipates mechanical energy through viscoelastic deformation, while the abrupt ceramic-elastomer stiffness transition leads to interfacial stress concentration and unfavorable stress localization. Herein, we develop a microphase-separated block copolymer matrix, crosslinked PS- b -P(DMS- stat -VMS) (CroPSDV), loaded with barium titanate (BTO) nanoparticles. Microphase separation in CroPSDV produces PS-rich rigid nanodomains within a soft polysiloxane-rich matrix, forming a mechanically heterogeneous architecture that may facilitate local stress redistribution and mitigate stress concentration around BTO nanoparticles while buffering the ceramic-elastomer stiffness contrast. Together with in situ thiol-ene crosslinking, this architecture structurally encapsulates and confines BTO nanoparticles, reduces hysteresis loss, and stabilizes cyclic compression behavior. The BTO/CroPSDV composite retains stable mechano-electric output over 10,000 compression cycles at 100 N, with an output retention of 98.4% and without obvious matrix-filler interfacial damage after cycling. It also exhibits sensitive and rapid mechano-electric response, with a detection limit of 1 N and a response time of 43 ms. This work presents a mechanically active matrix-design strategy for resilient piezoelectric composites for stress dispersion and cyclic interfacial stability. Download: Download high-res image (264KB) Download: Download full-size image
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高影响因子
Metals
·
2026
·Vol. 16
·期 5
·528
·
IF 3.1
Guangya Hou,Siqi Chen,Jianli Zhang,Qiang Chen,Yiping Tang
The functional valorization of waste fabrics, particularly their conversion into flexible low-cost, high-performance electrodes, holds significant promise for resource sustainability and the development of advanced energy technologies. Here, a NiB/Cu/polyester fabric (PF) composite electrode was fabricated via two-step electroless plating on waste PF and was demonstrated as a bifunctional electrocatalyst for methanol oxidation (MOR) and urea oxidation (UOR). The morphology, crystal structure, surface chemical state, and wettability of the electrodes were characterized using SEM, TEM, XRD, XPS, and contact angle measurements. The Cu interlayer critically enhanced interfacial wettability, intrinsic catalytic activity and stability. At 0.8 V, the NiB/Cu/PF electrode delivered average current densities of 312 mA·cm−2for MOR and 288 mA·cm−2for UOR, outperforming NiB/PF by 27.9% and 9.1%, respectively. After 2000 accelerated degradation cycles with electrolyte renewal, MOR and UOR activities were retained at 91.6% and 105.0%, respectively. Remarkably, the Cu interlayer conferred exceptional mechanical–electrochemical robustness: following 100 sequential bending and twisting deformations, current density retention ranged from 84.6% to 96.7% across multiple test configurations. The Cu interlayer acted as a flexible stress buffer during mechanical deformation, effectively improving the adhesion between the coating and the substrate.
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高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2026
·
IF 2.7
Pengfei Guo,Meng Wang,Yingbo Chen
BACKGROUND The treatment of industrial wastewater containing chromium (Cr(VI)) and rhodamine B (RhB) is a critical environmental protection issue. Fenton-like systems have been widely considered for their potential in wastewater treatment, but developing efficient and practical Fenton-like materials and methods remains a key challenge. This study focuses on exploring the effectiveness of a Fenton-like system composed of a zero-valent iron-based composite material (HTCTSIP-5) and exogenous hydrogen peroxide (H₂O₂) for the removal of Cr(VI) and RhB from wastewater. RESULTS The effects of various parameters, including dosing methods, pH levels, content of HTCTSIP-5 and H₂O₂, and initial concentrations, on the removal efficiency were studied. Techniques such as electron paramagnetic resonance, scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy were employed to investigate the underlying mechanisms of removal of Cr(VI) and RhB. The results revealed that the HTCTSIP-5/H₂O₂ system exhibited high removal efficiencies for both Cr(VI) and RhB, with hydroxyl radicals ( • OH) identified as the key agents in RhB degradation. CONCLUSION This study confirms that the use of the HTCTSIP-5/H₂O₂ Fenton-like system is an effective approach for the treatment of wastewater containing Cr(VI) and RhB. It provided an effective material and method for industrial wastewater treatment, offering a valuable approach for environmental protection. © 2026 Society of Chemical Industry (SCI).
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