CONSTRUCTION AND BUILDING MATERIALS
·
2026
·
IF 8
Lin Tang,Hongcai Tang,Qian Li,Chang Liu,Xiaolin Liu,Jing Jiang,Qingyi Hu,Xi Liu
Rapid industrialization has intensified global energy demand, highlighting the need for efficient thermal insulation in building heating and cooling systems. Although conventional polymer aerogels are effective thermal insulators, their inherent flammability and toxic smoke release severely limit their safe applications. In this work, we report a protonation-enabled, hydrogen-bond-assisted sol-gel strategy to fabricate intrinsically flame-retardant and thermally insulating poly(p-phenylene benzobisoxazole) (PBO) aerogels. Protonation converts micron-scale PBO fibers into well-dispersed PBO nanofibers (PNFs) that co-assemble with cellulose acetate via hydrogen bonding, enabling robust cellulose/PNF aerogels. This strategy effectively overcomes the gelation instability and structural fragility of pure PBO aerogels, resulting in improved dimensional stability and thermal insulation performance. The resulting aerogels exhibit low density (55 mg·cm −3 ), improved compressive strength (0.64 MPa), and excellent thermal insulation performance. Remarkably, despite the incorporation of flammable cellulose, the aerogels achieve a high limiting oxygen index (LOI, 45–52), demonstrating outstanding flame retardancy (UL 94 V-0) and structural stability. Cone calorimetry tests show that the Cellulose/PNF aerogel has a very low peak heat release rate (pHRR, 23.8 kW/m 2 ), total heat release (THR, 2.3 MJ/m 2 ), and total smoke release (TSR, 3.3 m 2 /m 2 ), indicating a low fire hazard. This work provides an effective approach for converting PBO fibers into flame-retardant PBO aerogels for advanced thermal insulation applications.
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高影响因子
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
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2022
·
IF 2.06
Chaofan Chai,Xiaohong Qiao,Lingling Zheng,Hubin Duan,Wei Bian,Martin M. F. Choi
As one of the main ingredients in the traditional Chinese medicine Gastrodia elata, p-hydroxybenzaldehyde (PHBA) has many pharmacological effects. Therefore, the monitoring of PHBA level is of great significance to exact valuation of the pharmacokinetics and toxic effect of PHBA in body fluids. In order to achieve the sensitive detection of PHBA, nitrogen-doped carbon dots (NCDs) have been designed. NCDs were successfully prepared through a hydrothermal strategy with chrysanthemum as the precursor. The transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and X-ray diffraction pattern were used for the characterization of NCDs. The as-prepared NCDs showed bright fluorescence with excitation/emission maxima of 290/421 nm and exhibited a fluorescence quenching response to PHBA under the optimal conditions. A good linear response was constructed at the PHBA concentration, ranging 10.0–150.0 μM with a detection limit of 63 nM based on the mechanisms of static quenching and inner filter effect. The proposed probe has been successfully applied to the detection of PHBA in blood and urine samples. In addition, the as-prepared NCDs with good biocompatibility were utilized for cell imaging. These results suggested that NCDs were promising probes for biosensing and bioimaging.
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高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2013
·Vol. 69
·期 1
·170-176
·
IF 1.102
Yang Jiannan,Li Shuzhen,Gong Yibin,He Chun,Zhang Qiong,Wu Jinqing,Liao Weichen,Shu Dong,Tian Shuanghong
Molecularly imprinted Fe 3 O 4 /SiO 2 core-shell magnetic composites (Fe 3 O 4 /SiO 2 -MIP) were successfully prepared via anchoring p -nitrophenol ( p -NP) imprinted functional polymers on the surface of amino-modified Fe 3 O 4 /SiO 2 core-shell particles. Synthesized magnetic Fe 3 O 4 /SiO 2 -MIP composites were characterized by X-ray diffraction, scanning electronic microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, and magnetic property measurement. The preferential catalytic ozonation of p -nitrophenol was evaluated in comparison with the competitive reaction in the presence of coexistent phenol. The results showed that the prepared Fe 3 O 4 /SiO 2 -MIP composites exhibit strong adsorption ability due to the strong bonding between p -NP and the molecularly imprinted layer. The Fe 3 O 4 /SiO 2 -MIP demonstrated a preferential catalytic ozonation of p -NP by the recognition ability of the molecularly imprinted layer to the target p -NP. The enhanced catalytic activity using Fe 3 O 4 /SiO 2 -MIP composites could be attributed to the excellent recognition absorption of the MIP layer on the surface of Fe 3 O 4 /SiO 2 -MIP to p -NP.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2019
·Vol. 29
·期 15
·1808415
·
IF 15.621
Fengren Cao,Wei Tian,Linxing Meng,Meng Wang,Liang Li
Flexible and self-powered perovskite photodetectors attract widespread research interests due to their potential applications in portable and wearable optoelectronic devices. However, the reported devices mainly adopt an independent layered structure with complex fabrication processes and high carrier recombination. Herein, an integrated ferroelectric poly(vinylidene-fluoride-trifluoroethylene) (P(VDF-TrFE)) and perovskite bulk heterojunction film photodetector on the polyethylene naphthalate substrate is demonstrated. Under the optimum treatment conditions (the polarization voltage and time, and the concentration of P(VDF-TrFE)), the photodetector exhibits a largely enhanced performance compared to the pristine perovskite device. The resulting device exhibits ultrahigh performance with a large detectivity (1.4 × 10 13 Jones) and fast response time (92/193 µs) at the wavelength of 650 nm. The improved performance is attributed to the fact that the polarized P(VDF-TrFE)/perovskite hybrid film provides a stronger built-in electric field to facilitate the separation and transportation of photogenerated carriers. These findings provide a new route to design self-powered photodetectors from the aspect of device structure and carrier transport.
研究领域:
光电子学
·
材料科学
·
柔性电子学
·
光电探测器
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铁电材料
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钙钛矿太阳能电池
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高影响因子
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
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2020
·
IF 1.27
Yixiao Li,Jing Li,Jinfeng Du,Changfan Zhang,Xiaoyan Wang,Qingpei Xiang,Chuanfei Zhang
The thermoelectric materials working in radioisotope thermoelectric generators or space reactor power system will be exposed to neutron irradiation in space missions . Herein, the influences of neutron irradiation with doses of 10 13 n/cm 2 and 10 15 n/cm 2 on the transport properties of p- and n-type Half-Heusler thermoelectric alloys were investigated. It was found that, neutron irradiation showed negative effects on thermoelectric properties of p-type Hf 0.5 Zr 0.5 CoSb 0.85 Sn 0.15 and p-type Hf 0.5 Ti 0.5 CoSb 0.85 Sn 0.15 . But neutron irradiation had no effects on thermoelectric properties of n-type Hf 0.5 Zr 0.5 NiSn 0.985 Sb 0.015 and n-type ZrNiSn 0.985 Sb 0.015 . After 10 15 n/cm 2 neutron irradiation, the electrical conductivity , power factor and ZT of p-type Half-Heusler alloys decreased by 7–22%, which was caused by the decreased carrier concentration. However, the radiation-induced changes in the thermoelectric properties proved to be essentially healed by annealing at 773 K ~ 873 K. The anti-annealing effects were also studied.
研究领域:
材料科学
·
核工程
·
热电学
·
辐射物理
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高影响因子
Nanoscale Research Letters
·
2015
·Vol. 10
·期 1
·1-7
·
IF 2.779
Ye Jian,Li Xueliang,Zhao Jianjun,Mei Xuelan,Li Qian
Two-dimensional (2D) material has many advantages including high carrier mobilities and conductivity, high optical transparency, excellent mechanical flexibility, and chemical stability, which made 2D material an ideal material for various optoelectronic devices. Here, we developed a facile method of preparing MoS 2 nanosheets followed by a facile liquid exfoliation method via ethyl cellulose-assisted doping and utilizing a plasma-induced p-doping approach to generate t effectively the partially oxided MoS 2 (p-MoS 2 ) nanosheets from the pristine n-type nanosheets. Moreover, an n-p junction type MoS 2 photodetector device with the built-in potentials to separate the photogenerated charges is able to significantly improved visible light response. We have fabricated photodetector devices consisting of a vertically stacked indium tin oxide (ITO)/pristine n-type MoS 2 nanosheets/p-MoS 2 /Ag structure, which exhibit reasonably good performance illumination, as well as high current values in the range of visible wavelength from 350 to 600 nm. We believe that this work provides important scientific insights for photoelectric response properties of emerging atomically layered 2D materials for photovoltaic and other optoelectronic applications.
研究领域:
材料科学
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纳米技术
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光电子学
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半导体器件
·
光子学
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 13
·8721-8738
·
IF 4.4
Cai Jiangtao,Liu Yi,Zhou Xiaonan,Hu Yehao,Yang Jin,Wang Zhiqiang,Sun Wenbin,Zhang Yating
Conducting polyaniline (PANI) and porous carbon fibrous membranes to construct composite electrode materials is one of the hotspots for preparing high-performance supercapacitors. The key is realizing the homogeneous dispersion of the two materials, carbon/PANI, and the connection interface with considerable firmness and strength. Therefore, based on the interfacial covalent bonding strategy, the N-P co-doped carbon membrane and PANI hybrid (NPCM@PANI) materials were designed and constructed. NPCMs were used as substrates to functionalize with nitric acid and ND42, and then co-aniline in situ on the surface of NPCMs. This approach aimed to obtain a hybrid material with high specific capacitance, using NPCM as the substrate. The resulting NPCM@PANI hybrids have a specific capacitance of up to 552 F/g (1 A/g), a small equivalent series resistance of 1.1 Ω and a low transfer diffusion resistance of about 1 Ω in 1 M H 2 SO 4 electrolyte. The capacitance performance is still 78% after 1,000 cycles, which provides excellent capacitance properties. Graphical abstract
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高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2026
·
IF 4.9
Yi-Fan Fu,Qing-Ya Cui,Long Jiang,Qing-Ren Lu,Lei Li,Zhan-Tao Zhao,Sheng Yin,Gui-Hua Tang
New acetylenic polyketide and p -terphenyl derivative from a marine-derived fungus. • Arunropsisol A ( 1 ) features a rare four-carbon 3-oxobut-1-yn-1-yl side chain. • All isolates evaluated for anti-inflammatory activity. One previously undescribed acetylenic polyketide, arunropsisol A ( 1 ), one new p -terphenyl derivative, aruterphenylol A ( 5 ), together with three known acetylenic polyketides, four benzene derivatives, and one macrolide, were isolated from the solid fermentation of the marine-derived fungus Microsphaeropsis arundinis P1B. Their structures were elucidated through a combination of spectroscopic, computational ECD, and X-ray diffraction methods. Arunropsisol A ( 1 ) is characterized by a novel carbon-skeleton, featuring a rare four-carbon 3-oxobut-1-yn-1-yl side chain, which suggests a biosynthetic relationship via oxidative cleavage of a common five-carbon isopentenyl-derived precursor. All isolated compounds were evaluated for their anti-inflammatory activity. Download: Download high-res image (270KB) Download: Download full-size image
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VACUUM
·
2026
·
IF 4.3
Mier Bai,Han Liu,Zhenyu Li,Yi He,Shijun Xu,Qing Yuan,Yi Sun,Xiangshan Hou
This study employs a low-temperature oxidation self-polymerization method to prepare polyaniline-coated titanium diboride (TiB 2 @PANI) composite materials and co-deposited them with the Ni-W-P system to fabricate a Ni-W-P/TiB 2 @PANI composite coating. This coating's microstructural features, mechanical characteristics, and anti-corrosive properties are systematically investigated. Experimental results demonstrate that the addition of TiB 2 @PANI reduced the average coefficient of friction (COF av ) of the composite coating from 0.560 to 0.232, while the impedance (R t ) represented an approximate 20-fold increase over the pristine Ni-W-P matrix. The SEM and XRD results indicate that TiB 2 @PANI effectively inhibits coating corrosion failure and enhances the improved early-stage corrosion resistance of the coating during a 72 h immersion test in a 0.1 mol/L H 2 SO 4 solution at 40°C.
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高影响因子
Small
·
2026
·
IF 11.8
Runren Jiang,Hanqi Yue,Yuyue Liu,Yilin Deng
Developing efficient water purification technologies without external chemical inputs is critical for treating emerging contaminants. Herein, we report a Cu 2 WS 4 -CoPc composite piezocatalyst that enables efficient in situ H 2 O 2 production and pollutant degradation via enhanced oxygen activation. The introduction of CoPc induces interfacial electron transfer from Cu 2 WS 4 to CoPc and promotes O 2 activation through d-p orbital hybridization between Co and O 2 , as confirmed by density functional theory calculations showing a decrease in O 2 adsorption energy from +1.2 to −0.3 eV. Consequently, the composite exhibits significantly enhanced piezoelectric response, with increased piezoelectric constant and effective longitudinal piezoelectric coefficient. The optimized Cu 2 WS 4 -CoPc generates H 2 O 2 via a two-electron oxygen reduction pathway, with superoxide radicals (·O 2 − ) as the key intermediate, achieving a yield of 183.4 µM within 30 min, which far exceeds that of pristine Cu 2 WS 4 . Moreover, the catalyst degrades ciprofloxacin with a rate constant of 0.059 min −1 , approximately 4.5 times higher than pure Cu 2 WS 4 , and zebrafish toxicity assays confirm effective detoxification of degradation intermediates. This study provides a new strategy for enhancing piezocatalytic H 2 O 2 synthesis through strengthened oxygen activation and lays a theoretical foundation for designing efficient, environmentally benign water treatment technologies.
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PubMed
高影响因子
Biomolecules
·
2022
·Vol. 12
·期 7
·997
·
IF 6.064
Mingyu Jia,Zhiyuan Luo,Haomin Chen,Bianqin Ma,Li Qiao,Qinjie Xiao,Pengfei Zhang,Anming Wang
Ideal immobilization with enhanced biocatalyst activity and thermostability enables natural enzymes to serve as a powerful tool to yield synthetically useful chemicals in industry. Such an enzymatic method strategy becomes easier and more convenient with the use of genetic and protein engineering. Here, we developed a covalent programmable polyproteam of tyrosine ammonia lyases (TAL-CLEs) by fusing SpyTag and SpyCatcher peptides into theN-terminal andC-terminal of the TAL, respectively. The resulting circular enzymes were clear after the spontaneous isopeptide bonds formed between the SpyTag and SpyCatcher. Furthermore, the catalytic performance of theTAL-CLEswas measured via a synthesis sample ofp-Coumaric acid. OurTAL-CLEsshowed excellent catalytic efficiency, with 98.31 ± 1.14% yield of the target product—which is 4.15 ± 0.08 times higher than that of traditional glutaraldehyde-mediated enzyme aggregates. They also showed over four times as much enzyme-activity as wild-type TAL does and demonstrated good reusability, and so may become a good candidate for industrial enzymes.Keywords:SpyTag/SpyCatcher;carrier-free immobilized enzyme;crosslinked enzyme protein;cell lysate;tyrosine ammonia lyase;bio-orthogonal system
研究领域:
生物技术
·
酶工程
·
合成生物学
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PubMed
高影响因子
Advanced Materials Interfaces
·
2022
·Vol. 9
·期 10
·2102374
·
IF 6.389
Zongtao Liu,Wenjie Lin,Zhiming Chen,Daming Chen,Yifeng Chen,Hui Shen,Zongcun Liang
Nonstoichiometric vanadium oxide V 2 O x has been demonstrated to serve as a hole-selective contact in crystalline silicon solar cells. A reaction between V 2 O x deposited by thermal evaporation and silicon can, however, result in a decreased work function (WF) and reduce hole selectivity. A straightforward and workable solution is presented in this study, which partially restores the WF of V 2 O x as deposited on silicon and improving solar cell efficiency, avoiding the use of amorphous silicon. Incorporating WO x into the Ag/V 2 O x 1 /Si structure, to form Ag/WO x /V 2 O x 2 /Si, x 1 < x 2 , the WF determined by nonstoichiometric ratio, i.e., x , of V 2 O x increases, enhancing the field passivation effect and reducing the rear recombination, which leads to a 11 mV increase in open-circuit voltage and a 0.90 mA cm −2 increase in short-circuit current. Finally, the solar cell gains an absolute improvement of ≈1.0% in power conversion efficiency.
研究领域:
材料科学
·
光伏技术
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高影响因子
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