Science China-Materials
·
2020
·Vol. 64
·期 3
·592-600
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IF 6.098
Wang Wei,Borse Rahul Anil,Xie Jiafang,Wang Yaobing
The preparation of high-value fuels and chemicals through the electrochemical carbon dioxide reduction reaction (CDRR) is of great significance to the virtuous cycle of carbon dioxide. However, due to the high overpotential involved in this reaction, high power consumption and high-cost noble-metal-based catalysts are required for driving this process. Herein, the electrochemical CDRR was achieved on biocompatible metal-free nitrogen, phosphorus co-doped carbon-based materials (NP-C) in the microbial fuel cell-microbial electrolysis cell (MFC-MEC) coupling system. As the bioelectrochemistry in MFC supplied power to drive the electrocatalysis in MEC, syngas was spontaneously produced from this coupling system without external energy input. With the NP-C materials as the excellent bifunctional electrocatalyst for the CDRR and oxygen reduction reaction (ORR), the current density of the MEC reached −0.52 mA cm −2 , and the Faradaic efficiencies (FEs) of CO and H 2 were 60% and 40%, respectively, at a load resistance of 10 Ω. Moreover, the CO/H 2 product ratio can be changed by adjusting the load resistance, which will widely meet various demand of syngas usage in further reactions. This study provides a spontaneous and tunable production of syngas in biogas digesters via a electrochemical strategy.
研究领域:
电化学
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环境能源技术
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生物电化学系统
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催化
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可持续能源
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2022
·Vol. 33
·期 33
·25436-25445
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IF 2.779
Li Saisai,Li Xingjia,Zhang Xiuli,Lv Zhaoyue,Liang Zhu,Xu Haisheng
The multilayer electrocaloric ceramics (MLEC) are promising candidates for environmentally friendly refrigeration, since it possesses large electrocaloric effect (ECE) at a relatively low applied voltage. In this work, factors that may influence the ECE of MLEC are investigated. Experimental results demonstrate that the ECE of MLEC is strongly related to its effective volume fraction, and the effective volume fraction of the MLEC can be tailored by changing the thickness of the MLEC protective layer. Measurements show up to a 33.3% improvement of adiabatic temperature change when the thickness of MLEC protective layers is decreased by 70.0%. Meanwhile, the relaxation and the temperature range of the MLEC is increased with the increase of frequency. The enhanced ECE response is obtained over a broad temperature range from 0 °C to 50 °C in MLEC. It is found that the ECE response of MLEC could be enhanced by thinning the protective layer, and this enhancement is induced by the increasing of the effective volume fraction which is caused by the protective layer thinning. As a result, this work provides an effective and feasible way to develop high-performance MLEC components.
研究领域:
材料科学
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陶瓷与复合材料
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固态物理
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能量收集与制冷技术
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DOI
高影响因子
WATER AIR AND SOIL POLLUTION
·
2018
·Vol. 229
·期 10
·322
·
IF 1.769
Tao Xiaoming,Wu Yunhai,Sha Haitao
Cuprous oxide-modified diatomite waste (Cu 2 O-DW) as a low-cost and effective adsorbent was prepared via a hydrothermal route combined with acid-alkali treatment. The microstructure and surface properties of the obtained Cu 2 O-DW composite was characterized by Brunauer-Emmett-Teller, scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The adsorption behaviors of three different types of dyes such as cationic dye methyl blue (MB), anionic dye acid orange (AO), and reactive dye reactive yellow (RY) onto the as-prepared Cu 2 O-DW were investigated. Several experimental parameters such as contact time, adsorbent dosage, initial dye concentration, and initial pH values were systematically estimated. The experimental results indicated that as-prepared Cu 2 O-DW have a better adsorption performance for MB, AO, and RY. Moreover, the kinetic and isotherm models were also used to account for the adsorption mechanism of dye molecules onto Cu 2 O-DW. The results demonstrated that three different dyes are all fitted well with pseudo-first-order kinetic model. Additionally, the Langmuir and Freundlich isotherm model is more suitable for describing the adsorption process of RY and MB on the as-prepared Cu 2 O-DW, respectively, and the AO adsorption is propitious to the D-R isotherm model. The value of adsorption energy (E < 8 kJ mol −1 ) confirmed that the physical adsorption is dominator during the adsorption process. The findings of the study demonstrated that the synthesized Cu 2 O-DW composite can be a promising adsorbent for the removal of organic dyes from wastewater and it provided a sustainable development method for cycling the diatomite waste from the brewery.
研究领域:
环境科学
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材料科学
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化学工程
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水处理技术
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吸附
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2019
·Vol. 30
·期 10
·9163-9170
·
IF 2.195
Li Yixiao,Han Jun,Xiang Qingpei,Zhang Chuanfei,Li Jing
The thermoelectric properties of SiGe– x %SiMo composites are studied from 323 to 1173 K. Electrical conductivity increases with SiMo concentration due to improved carrier mobility and reaches a peak of 1735 S cm −1 when x = 20. The sample SiGe–20%SiMo shows the highest PF of 2.9 mW −1 m −1 K −2 at 1073 K, which is 31.8% higher than the PF value of SiGe. Although total thermal conductivities increase after SiMo addition, the lattice thermal conductivities are reduced due to strengthened phonon scattering by the presence of MoSi 2 . The ZT of SiGe is 0.64 at 1073 K. It is increased for all the composites in the high-temperature range between 773 and 1073 K, which is beneficial to high temperature application of SiGe alloys. SiGe–20%SiMo shows the highest ZT of 0.79 at 1073 K.
研究领域:
材料科学
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热电学
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半导体合金
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DOI
高影响因子
BMC PUBLIC HEALTH
·
2020
·Vol. 20
·期 1
·475
·
IF 2.521
Ou-Yang Jian,Bei Chun-Hua,Liang Hua-Qin,He Bo,Chen Jin-Yan,Fu Yong-Shui
Background Recruiting of sufficient numbers of donors of blood products is vital worldwide. In this study we assessed the efficacy and cost-effectiveness of telephone calls and SMS reminders for re-recruitment of inactive blood donors. Methods This single-centre, non-blinded, parallel randomised controlled trial in Guangzhou, China included 11,880 inactive blood donors whose last donation was between January 1 and June 30, 2014. The donors were randomly assigned to one of two intervention groups (telephone call or short message service [SMS] communications) or to a control group without intervention. SMS messages with altruistic appeal were adopted in the SMS group; in addition to altruistic appeal, reasons for deferral of blood donation were also asked in the telephone group. All participants were followed up for 1 year. The primary outcome was re-donation rate, and rates in different groups were compared by intention-to-treat (ITT) analysis and estimation of the average treatment effect on the treated (ATT). Secondary outcomes were the self-reported deterrents. Other outcomes included the re-donation interval, and the incremental cost-effectiveness ratio (ICER) of telephone calls and SMS reminders on re-recruitment. Results ITT analysis revealed no significant differences in the re-donation rate among the three groups. ATT estimations indicated that among compliers, telephone calls significantly increased re-donation compared to both SMS reminders and no intervention. Donor return behaviour was positively associated with receiving reminders successfully, being male, older age, and previous donation history. The SMS reminder prompted donors to return sooner than no reminder within 6 months, and according to ICER calculations, SMS reminders were more cost-effective than telephone calls. Donors reported time constraints as the most main causes of self-deferral in the telephone group, and altruistic appeal had a positive effect on these donors. Conclusions Interventions to reactivate inactive blood donors can be effective, with telephone calls prompting more donors to return but at a greater cost than SMS messages. SMS reminder with altruistic appeal can urge donors to re-donate sooner within 6 months than no reminder. Trial registration NCT03366441 (Reactivation of Inactive Blood Donors). Retrospectively registered 4 December 2017.
研究领域:
输血医学
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公共卫生
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临床试验
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卫生经济学
·
行为科学
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DOI
高影响因子
Science China-Materials
·
2017
·Vol. 60
·期 4
·285-294
·
IF 3.956
Liao Jin-Feng,Li Wen-Guang,Rao Hua-Shang,Chen Bai-Xue,Wang Xu-Dong,Chen Hong-Yan,Kuang Dai-Bin
ABX 3 -type organic-inorganic hybrid halide perovskite materials have been recognized as promising candidates for optoelectronic applications. However, poor stability of organic-inorganic hybrid perovskite hinders their forward long-term utilization and hence an effective strategy is needed to replace the organic part with an inorganic cation. Herein, all inorganic CsPbI 3 nanowires with a diameter of 50–100 nm are synthesized on fluorine-doped tin oxide glass via a simple solution-dipping process, which are further transformed into CsPbBr 3 nanowires through a solution-phase halide exchange method. A phase change from non-perovskite to perovskite structure is observed during the ion substitution process of I − by Br − , which is elaborated by X-ray diffraction, absorption and photoluminescence spectra. We for the first time apply the as-formed CsPbI 3 and CsPbBr 3 nanowires into perovskite solar cells, yielding power conversion efficiency of 0.11% and 1.21%, respectively. The inorganic CsPbBr 3 nanowire solar cell shows impressive stability which still remains 99% of the initial power conversion efficiency even after 5500 h aging.
研究领域:
材料科学
·
光伏技术
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纳米技术
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无机化学
·
光电子学
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DOI
高影响因子
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
·
2020
·Vol. 51
·期 4
·1773-1783
·
IF 2.035
Wang Qi,Wang Lijun,Zhang Wei,Li Jianmin,Chou Kuochih
The influence of small amounts of cerium on the solidification phenomena of S31254 high-Mo austenitic stainless steel was investigated by in situ observations and theoretical calculations. In situ observations indicate that cerium addition in molten steel can accelerate austenitic nucleation but inhibit primary austenite grain growth. The initial nucleation temperature occur 32.3 °C in advance and the nucleation site density increases to 176/mm after 2 seconds in S31254-Ce compared to S31254. The modified Ce-containing inclusions in S31254-Ce improve the ability for austenite heterogeneous nucleation, which would significantly reduce the energy barrier of nucleation. The nucleation mechanism obtained from Johnson–Mehl–Avrami–Kologoromov (JMAK) theory is changed from site saturation nucleation to site saturation plus Avrami nucleation after cerium addition. Furthermore, cerium addition also prolongs the whole solidification temperature range from 28 °C to 43.9 °C and limits the growth velocity of a single austenite grain from approximately 20 to 2 μ m/s. The ratio of the solid phase decreases from 60 to 8.2 pct, but the grain density increases from 68.8 to 280/mm 2 , with the solidification time extended to 8 seconds after cerium addition. Thus, the main solidification behavior in the early solidification stage of S31254-Ce is nucleation instead of primary grain growth. The low growth velocity for austenite grains and significant high nucleation site density exhibit a low rate constant k during the solidification process. Moreover, cerium addition could significantly refine the solidified structure, and the grain density of the final solidified structure in S31254-Ce is 366.6/mm 2 .
研究领域:
材料科学
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冶金学
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物理冶金
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凝固加工
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DOI
高影响因子
MICROCHIMICA ACTA
·
2016
·Vol. 183
·期 7
·2163-2168
·
IF 4.831
Tao Liang,Zhang Chunmei,Zhang Jinpeng,Sun Yuanjie,Li Xiaohua,Yan Kuocheng,Jin Boquan,Zhang Zhujun,Yang Kun
A chemiluminescent immunoassay for the staphylococcal enterotoxin C1 (SEC1) based on the use of dye-encapsulated mesoporous silica nanoparticles (m-SiNPs) as a label is described. The dyes are retained in the m-SiNPs via strong hydrophobic interactions. The assay comprises the following steps: (a) Microplates coated with antibody against SEC1 are filled with sample upon which the SEC antigen will be bound to the surface; (b) following a washing step, secondary antibody linked to m-SiNPs (that were covalently labeled with rhodamine 6G and fluorescein) were added to form the sandwich complex; (c) after another washing step, bis(2,4,6-trichlorophenyl) oxalate, H 2 O 2 and imidazole are added to generate chemiluminescence whose intensity is proportional to the number of m-SiNPs and thus to the number of antigen (SEC) molecules. It is found that the use of functionalized m-SiNPs strongly amplifies the signal. Enterotoxin SEC1 can be detected by this method in the 0.025 to 2 ng⋅mL‾ 1 concentration range, the detection limit is 19 pg⋅mL‾ 1 (at 3σ), and the relative standard deviation (for 11 parallel measurements at a 1 ng⋅mL‾ 1 level) is 4.6 %. The use of an automated chemiluminescence analyzer further improves detection.
A chemiluminescent immunoassay for the staphylococcal enterotoxin C1 (SEC1) is developed based on dye-encapsulated mesoporous silica nanoparticles (m-SiNPs) and bis(2,4,6-trichlorophenyl) oxalate (TCPO)-H 2 O 2 -dyes chemiluminescent system. The advantage of this method is low detection limit to 19 pg⋅mL‾ 1 .
研究领域:
免疫学
·
分析化学
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纳米生物技术
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食品安全
·
毒素检测
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 3
·212
·
IF 2.8
Zhan Mingfang,Li Jiayan,Alam Mohammad Jahidul,Akter Sima,Wan Hong,Mahmud Sakil
Acetaminophen (paracetamol, PA) is among the most widely used analgesic and antipyretic drugs, necessitating sensitive and reliable monitoring in pharmaceutical and clinical matrices. Although numerous PA sensors have been reported, many rely on complex nanocomposites or multistep fabrication, limiting reproducibility and scalability. Here, a minimalist yet highly efficient sensing strategy is demonstrated by electrodepositing a uniformly nanostructured nickel oxide (NiO) film directly onto a disposable screen-printed carbon electrode (SPCE). This rational single-step deposition yields a catalytically active surface with markedly enhanced electron-transfer characteristics. The resulting NiO/SPCE exhibits a linear response from 1.0 to 9.17 μM and a detection limit of 0.11 μM, outperforming many previously reported metal-oxide-based PA sensors. Morphological characterization confirms the formation of a smooth, compact, and homogeneously distributed NiO layer, while differential pulse voltammetry highlights excellent selectivity, minimal interference from common ions and metabolites, and strong operational stability. Together, these features establish the NiO/SPCE as a reproducible, low-cost, and high-performance platform for the precise determination of PA in pharmaceutical formulations and human fluids, with clear potential for integration into portable point-of-care systems.
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产品关联
DOI
高影响因子
Nature Communications
·
2026
·
IF 15.7
Tang Xiaoxuan,Zhang Shuxuan,Liu Mengke,Liang Yuxin,Fan Yulan,Sun Xinyue,Chang He,Yang Xuewa,Zhu Rong,Jin Xiaoling,Zhuang QianXing,Ge Yifan,Ling Jue,Yang Yumin
Cell-cell adhesion is crucial for maintaining cell functions and the integrity of tissue structure in organisms. However, cell-cell adhesion cues have not been effectively replicated in biomaterials and the associated mechanisms that enhance neural regeneration remained largely unexplored. Here, we present a diffusive N-cadherin functionalized hydrogel system, which provided cell-cell adhesion cues to modulate intercellular communications to significantly promote the formation of active neural network via thrombospondin-1 mediated neural communication and activation of TGF-β/Smad pathway. The dynamic assembly of N-cadherin at cell-hydrogel interface driven by adhered neurons effectively facilitated the reshaping of membrane protrusions to initiate intercellular adherens junctions. Further, this hydrogel system promisingly promoted neurological function recovery in rats following traumatic brain injury. Our study provides the principle of replicating diffusive cell adhesion molecules to mediate cell-cell adhesion in hydrogels, which may have broad applications in developing engineered biomaterials aimed at modulating cell fates in regeneration of various tissues.
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2026
·
IF 12.6
Yijie He,Yunfei Mo,Xiaoyan Shen,Jialin Xu,Shiwen Liu,Xiuhong Sun,Rui Zhou,Kai Fu,Yuqing Niu
Vascular bypass surgery is an important treatment for severe atherosclerosis, but the scarcity of autologous blood vessels restricts its clinical application. Although tissue-engineered vascular grafts (TEVGs) have potential, the long cycle of traditional in vitro culture makes it difficult to achieve “off-the-shelf” supply. This study innovatively proposes a strategy of guiding the in vivo self-assembly of endogenous cells via degradable scaffolds to rapidly construct Vascular bypass grafts. After implanting electrospun PLCL nanofibrous elastomer scaffolds subcutaneously in SD rats, host fibroblasts, and abdominal adipose-derived stem cells were recruited in two weeks. These cells synergistically secreted extracellular matrix, forming an endogenous cell-empowered tissue-engineered PLCL (TE-P) vascular graft. The graft has appropriate stress relaxation and creep properties, and can support the adhesion and migration of arterial endothelial cells. In the abdominal aorta replacement model, TE-P remained patent 90 days after transplantation, with the vessel wall having synchronous contraction function and elasticity, and the effect of tissue structure reconstruction was close to that of the “gold standard” autologous blood vessels. Transcriptome analysis showed that TE-P promotes vascular regeneration through the synergistic mechanisms of energy metabolism, immune balance, cell fate regulation, and matrix remodeling. This conclusion was verified by immunofluorescence, transmission electron microscopy, and flow cytometry. The scalable platform established in this study realizes the rapid in vivo manufacturing of off-the-shelf Vascular bypass grafts through the self-assembly of endogenous cells, making its production cycle match the time window of elective surgery, and providing a new solution to break through the bottleneck of clinical shortage of transplant vessels.
Section
Graphical
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DOI
PubMed
高影响因子
BMC PLANT BIOLOGY
·
2026
·
IF 4.8
Zhang Zeyu,Chen Bingyan,Zhang Yinghe,Mo Xiaohui,Lu Xing,Wang Tianqi,Liang Cuiyue,Tian Jiang
Background Flavonoids play a crucial role as secondary metabolites in plant growth and development. Naringenin is a central intermediate in flavonoid biosynthesis. It is also a pivotal branching point that gives rise to metabolites such as flavonols, anthocyanins, and isoflavonoids. However, the mechanisms underlying plant root development regulated by flavonoids remain fragmentary, especially in crops. Results In this study, we observed a significant inhibition of soybean (Glycine max) root growth after exposure to 75 μM naringenin. The treated roots showed reduced auxin content and increased reactive oxygen species (ROS) levels in root tips. Through RNA-sequencing and nanoElute high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) analyses, we further investigated molecular responses of soybean roots to naringenin treatment. A total of 6,390 differentially expressed genes (DEGs) were identified. Among them, 3,910 genes were up-regulated and 2,480 were down-regulated. These DEGs notably included genes related to ROS metabolism and the auxin signaling pathway. We also detected 806 differential accumulation proteins (DAPs), including 481 up-regulated and 325 down-regulated proteins. The integration of transcriptomic and proteomic data showed a close association between DEGs and DAPs in roots, especially in pathways related to glutathione metabolism. Conclusion Taken together, this comprehensive analysis highlights the intricate and specific responses of soybean roots to naringenin exposure, mainly affecting the levels of auxin and ROS. It provides valuable insights and candidate genes for further investigating root growth regulated by flavonoids.
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DOI
PubMed
高影响因子
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