Nano Research
·
2023
·Vol. 16
·期 9
·11612-11620
·
IF 9.9
Fan Wei,Zhang Cong,Liu Yang,Wang Shujuan,Dong Kai,Li Yi,Wu Fan,Liang Junhao,Wang Chunlan,Zhang Yingying
Piezoelectric nanogenerators (PENGs) are promising for harvesting renewable and abundant mechanical energy with high efficiency. Up to now, published research studies have mainly focused on increasing the sensitivity and output of PENGs. The technical challenges in relation to practicability, comfort, and antibacterial performance, which are critically important for wearable applications, have not been well addressed. To overcome the limitations, we developed an all-nanofiber PENG (ANF-PENG) with a sandwich structure, in which the middle poly(vinylidene fluoride-co-hexafluoropropylene (P(VDF-HFP))/ZnO electrospun nanofibers serve as the piezoelectric layer, and the above and below electrostatic direct-writing P(VDF-HFP)/ZnO nanofiber membranes with a 110 nm Ag layer on one side that was plated by vacuum coating technique serve as the electrode layer. As the ANF-PENG only has 91 µm thick and does not need further encapsulating, it has a high air permeability of 24.97 mm/s. ZnO nanoparticles in ANF-PENG not only improve the piezoelectric output, but also have antibacterial function (over 98%). The multifunctional ANF-PENG demonstrates good sensitivity to human motion and can harvest mechanical energy, indicating great potential applications in flexible self-powered electronic wearables and body health monitoring.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2023
·Vol. 332
·期 4
·1193-1202
·
IF 1.6
Zhao Yuting,Li Jie,Chen Long,Guo Qi,Li Lingyi,Chai Zhifang,Wang Shuao
Efficient removal of iodide (I − ) and iodate (IO 3 − ) from aqueous solution is highly desirable for waste disposal and remediation of radioiodine contamination. We report here a bifunctional anion exchange resin Purolite A530E for the effective I − /IO 3 − adsorption, which shows a priority anion-exchange affinity for I − (99%) over IO 3 − (9.7%). The maximum adsorption capacity for I − is 275.16 mg·g −1 fitted by the Langmuir isotherm model, much higher than most adsorbents. Furthermore, Purolite A530E exhibits great selectivity for I − over competing anions, which endows the resin with promising I − remediation that over 99% I − can be removed from simulated Hanford groundwater (HGW).
✓ 已验证
产品关联
DOI
高影响因子
POLYMER BULLETIN
·
2023
·
IF 3.2
Huang Jiali,Dong Ruirui,Habibul Marhaba,Zhang Yanhui,Guan Ming,Li Guixin
It is of great significance for human health and environmental monitoring to establish an ultrasensitive assay method for Hg 2+ . In this work, a label-free and highly sensitive electrochemiluminescence (ECL) aptasensor was developed for the sensitive and selective detection of Hg 2+ without additional coreactants. Poly (aniline-luminol)/graphene oxide (P(ANi-Lu)/GO) nanocomposites were prepared, and chitosan (CS) was used to modify the surface of the material positively charged. The prepared P(ANi-Lu)/GO/CS was characterized by scanning electron microscopy (TEM), UV–Vis absorption spectra, fluorescence spectra and electrochemical impedance spectroscopy. The P(ANi-Lu)/GO/CS exhibited a stable and excellent electrochemiluminescence (ECL) property. Aptamer was adsorbed on P(ANi-Lu)/GO/CS sensing interface through electrostatic interaction, and Hg 2+ was detected using T-Hg 2+ -T configuration as ECL intensity controller. The results showed that Hg 2+ can be quantitatively determined in the range of 1.0 × 10 −15 ~1.0 × 10 −7 M with a detection limit of 4.8 × 10 −16 M. Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
Science China-Materials
·
2022
·Vol. 66
·期 4
·1659-1669
·
IF 8.64
Yin Yue,Chen Hongbin,Lin Pengcheng,Yu Weitai,Cao Xiaobao,Sheng Xinxin,Puigmartí-Luis Josep
Fluorescent metal-organic frameworks (FMOFs) have emerged as promising materials for optoelectronic and biological applications. However, their widespread use in these areas is limited due to some major drawbacks. First, it is difficult to construct flexible free-standing platforms with FMOF crystals. Moreover, these materials exhibit a low optical stability against external stimuli, and frequently, the metal ions used for their synthesis are toxic. Herein, a coaxial microfluidic spinning approach is developed to continuously generate core-shell FMOF-based microfibers in a one-step and large-scale fashion. The free-standing FMOF-based microfibers obtained showcase a high tensile strength of 85.6 MPa, the highest tensile strength reported for polymer@MOF-based composites. Moreover, it is also demonstrated that the cross-linked hydrogel shell generated with our microfluidic approach can effectively improve the optical stability of the FMOF crystals located at the core of the microfibers against a solution containing chemical species that can damage the FMOF crystals (e.g., a metal ion), acid and/or alkali treatments as well as heat. Most importantly, the FMOF-based microfibers exhibit high cell viability (ca. 96.6%) and versatile extracellular fluorescence imaging capabilities owing to both the biocompatibility of the hydrogel shell and the intrinsic fluorescence of the micofibers core. Accordingly, the herein reported flexible FMOF-based microfibers provide an advanced platform to design new concepts and material assemblies for optical and biomedical applications.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 6
·1-18
·
IF 2.8
Zhao Yutong,Mu Jincheng,Wang Yuanyuan,Liu Yanxiu,Wang Huan,Song Hua
Here we report an effective and facile method for preparing porous carbons (CSCK-T- x ) with highly developed hierarchical porosity for high-performance supercapacitor by one-step KOH activation of coconut shell carbon. The effects of carbonization temperature (T, °C) and KOH/C ratio ( x ) on the structure and electrochemical properties were studied systematically. As the KOH/C ratio and activation temperature increase, the S BET rapidly increases and then decreases and reaches a maximum (2143.6m 2 g −1 ) at 800 °C with a KOH/C ratio of 2. Furthermore, CSCK-800-2 displayed abundant micropores and two concentrated mesopores at 4 nm and 14 nm. In a three-electrode test system, CSCK-800-2 exhibits a high specific capacitance of 317 F g −1 at a current density of 0.5 A g −1 and considerable rate retention of 68% at 20 A g −1 . The symmetrical supercapacitor that was based on CSCK-800-2 showed a maximum energy density of 13.5 Wh kg −1 at 0.5 A g −1 with a superior cycling stability (99.7% of the capacitance retention after 10,000 cycles at 5 A g −1 ) in 6 M KOH electrolyte. The large specific surface area and unique hierarchical porosity of CSCK-800-2 enable it to have high ion-accessible surface and low-ion transport resistance. This one-step activation method provides an approach to convert biological waste into high-value hierarchical porous carbon material for electric double-layer capacitors.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF FLUORESCENCE
·
2023
·Vol. 33
·期 4
·1505-1513
·
IF 2.7
Wu Sifei,Fang Linxia,Li Yihan,Wang Hai-Bo,Zhang Hongding
Changes in Sn 2+ and glycine levels are relevant to many important physiological procedures in human health. However, investigation of their physiological functions is limited because few versatile methods towards Sn 2+ and glycine detection have been developed. In this work, a fluorescence turn on–off-on strategy was firstly constructed for rapid and sensitive detection of Sn 2+ and glycine through the specific binding between Sn 2+ and glycine. Carbon nanodots (CDs) with a quantum yield of 19.5% were synthesized by utilizing inner film of waste eggshell as carbon source and employed as fluorescent probe. In the presence of Sn 2+ , the fluorescence of CDs was quenched by Sn 2+ via the primary inner filter effect (IFE). However, the binding between Sn 2+ and glycine prevented the IFE between Sn 2+ and CDs, resulting in fluorescence recovery of CDs. Under optimized conditions, the fluorescent response of CDs displayed good linear relationships with the concentrations of Sn 2+ in the range of 10–200 µM and 200–5000 µM, and the limit of detection (LOD) was 2.4 µM. For glycine detection, a good linear relationship was obtained in the concentration range of 5–1000 µM with a low LOD down to 0.76 µM. Moreover, the practicability of the assay was also demonstrated by measuring glycine content in human serum samples. This work provides an economical, green and fast method for biological analysis of Sn 2+ and glycine.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
IONICS
·
2023
·Vol. 29
·期 3
·1245-1254
·
IF 2.8
Wang Kunjie,Han Sha,Liang Lei,Li Hongxia,Niu Xiaohui,Zhang Deyi,Fan Haiyan,Liu Xiaoyu
A ternary composite material containing TiO 2 , Bi 2 WO 6 , and carbon quantum dots (CQDs) was synthesized in this work. Herein, CQDs were derived from olive leaves using reflux method, and TiO 2 was loaded through hydrothermal treatment. The as-prepared composite (Bi 2 WO 6 /CQDs/TiO 2 ) showed excellent photocatalytic properties. The structure, morphology, and chemical composition of Bi 2 WO 6 /CQDs/TiO 2 were characterized using XRD, SEM, TEM, and XPS. The photocatalytic performance of the composites showed it depends on the loading rate of CQDs. The highest degradation rate of RhB (92%) was achieved at 0.5% for CQDs. UV–vis DRS, photocurrent, and PL analysis results showed that, compared to Bi 2 WO 6 and CQDs/TiO 2 binary composite, the ternary composite Bi 2 WO 6 /CQDs/TiO 2 -0.5 exhibited better visible light response, higher photogenerated carrier separation efficiency, and consequently superior photocatalytic degradation performance.
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-16
·
IF 16.6
Huang Biao,Tang Tao,Chen Shi-Hui,Li Hao,Sun Zhi-Jun,Zhang Zhi-Lin,Zhang Mingxi,Cui Ran
The blood-brain barrier breakdown, as a prominent feature after traumatic brain injury, always triggers a cascade of biochemical events like inflammatory response and free radical-mediated oxidative damage, leading to neurological dysfunction. The dynamic monitoring the status of blood-brain barrier will provide potent guidance for adopting appropriate clinical intervention. Here, we engineer a near-infrared-IIb Ag 2 Te quantum dot-based Mn single-atom catalyst for imaging-guided therapy of blood-brain barrier breakdown of mice after traumatic brain injury. The dynamic change of blood-brain barrier, including the transient cerebral hypoperfusion and cerebrovascular damage, could be resolved with high spatiotemporal resolution (150 ms and ~ 9.6 µm). Notably, the isolated single Mn atoms on the surface of Ag 2 Te exhibited excellent catalytic activity for scavenging reactive oxygen species to alleviate neuroinflammation in brains. The timely injection of Mn single-atom catalyst guided by imaging significantly promoted the reconstruction of blood-brain barrier and recovery of neurological function after traumatic brain injury.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Friction
·
2023
·Vol. 11
·期 5
·801-819
·
IF 6.8
Liu Chenxu,Tian Yu,Khan Zulfiqar A.,Meng Yonggang
Corrosion and corrosive wear occur commonly on metals surface in aqueous solutions. External electric field is usually considered as one of the factors to accelerate corrosion or corrosive wear of materials in the presence of conventional electrolytes. This work aims to reposition widely believed perspective by experimental justification which have been conducted in aqueous solutions containing surfactants. Electric potential of metal surfaces was modulated externally within the electrochemical potential window of the metal electrode-solution-counter electrode system, which actively regulated the adsorption or desorption of surfactant molecule in the aqueous solution over the electrodes to form a molecular barrier of electron transportation across the electrode-electrolyte interface. The advantage of the approach over the anodic passivation is negligible redox reactions on the protected electrode surface while a better lubricious and wear resistant film than oxide is maintained in the meantime. Tribopairs of several metal/metal and metal/ceramic were tested by employing a ball-on-disc tribometer with anionic and cationic surfactants solutions. For anionic surfactant as the modifier, positive surface potential enables coefficient of friction to be decreased by promoting the formation of adsorption film on metal surface in aqueous solutions. For cationic surfactant, negative surface potential plays a role in decreasing the coefficient of friction. Phase diagrams of friction and wear in wide ranges of surfactant concentration and surface potential were plotted for the tested metal/metal and metal/ceramic tribopairs. These results indicate that the adsorption behavior of molecules or ions at the metal-aqueous interface can be well regulated when an external electric field is present without inducing corrosion or corrosive wear.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2022
·Vol. 106
·期 1
·158-172
·
IF 2.606
Luo Qiuzi,Sun Yihua,Guo Jin,Zhang Jiangyu,Fang Liang
In this study, the effect of Ti doping ratio on Ti/Ga co-doped ZnO (TGZ) nanopowders was investigated. TGZ nanoparticles with different Ti loadings were prepared using the sol-gel method and analyzed by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), infrared spectroscopy (FT-IR), ultraviolet-visible spectrophotometer (UV-Vis), X-ray photoelectron spectroscopy (XPS) and photoluminescence (PL). The results show that when the Ti doping content is low (0.25at%–1at%), all TGZ samples are single-phase and have the same wurtzite structure as pure ZnO, and when the Ti doping content is high (1.5at%–6at%), a second phase appears, which is the Zn 2 TiO 4 inverse spinel phase. When the doping is low, Ti and Ga can replace the position of Zn, the particle size of ZnO is reduced, the absorption of visible light is enhanced, and the catalytic degradation ability is improved. When the powder is highly doped, the shape distortion of the powder is obvious, and the crystal changes from single-phase to multi-phase, but the absorption of visible light is enhanced, and the recombination of electron-hole pairs is reduced. Through the MB degradation experiment, it was found that T 1.5 G 1.5 Z had the strongest degradation ability, and the degradation rate reached 96% in 150 min. With the further doping of Ti, the degradation rate remained at a high level.
Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
BMC CANCER
·
2022
·Vol. 22
·期 1
·1-12
·
IF 4.638
Chen Xueqin,Wang Yan,Liu Hancong,Zhang Jingjing,Wang Jie,Jin Xiaobao,Ma Yan
Background In our previous study, N end of the Circumsporozoite protein (CSP I-plus) modified recombinant human Endostatin (rEndostatin, endostar) (rES-CSP) was constructed, which had antiangiogenic capability and bound to hepatocellular carcinoma in vivo and in vitro. In this study, the inhibition of rES-CSP on hepatocellular carcinoma metastasis was verified in vivo and in vitro, and its possible mechanism was explored. Methods Firstly, the impact of rES-CSP on the migration, adhesion of hepatoma cell HCCLM3 was identified by wound healing, transwell, and on metastasis of orthotopic xenograft model was identified in nude mouse. Then the expression of metastasis-associated molecules (MMP2, E-cadherin, integrinβ1) and angiogenesis-related factors (VEGFA) in vitro and in vivo were detected by real-time PCR, western blotting, immunohistochemistry. Results Finally, we found that rES-CSP could inhibit the migration and invasion of HCCLM3, and decrease tumor metastasis and growth in nude mouse orthotopic xenograft models. The tumor inhibiting rates of rES-CSP and Endostar were 42.46 ± 5.39% and 11.1 ± 1.88%. The lung metastasis rates of the control, Endostar and rES-CSP were 71, 50, and 42.8%, respectively. Compared with Endostar, rES-CSP significantly down-regulated the expression of VEGFA and integrinβ1. Heparin, a competitive inhibitor of CSP I-plus, which can be bind to the highly-sulfated heparan sulfate proteoglycans (HSPGs) over-expressed in liver and hepatocellular carcinoma, alleviated the down-regulation of VEGFA and integrinβ1. Conclusions These indicate that rES-CSP may play a role in inhibiting tumor growth and metastasis by down-regulating the angiogenic factor VEGF and the metastasis-related molecules or by interfering with HSPGs-mediated tumor metastasis.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Light-Science & Applications
·
2022
·Vol. 11
·期 1
·1-9
·
IF 20.257
Ju Songman,Zhu Yangbin,Hu Hailong,Liu Yang,Xu Zhongwei,Zheng Jinping,Mao Chaomin,Yu Yongshen,Yang Kaiyu,Lin Lihua,Guo Tailiang,Li Fushan
Interactive display devices integrating multiple functions have become a development trend of display technology. The excellent luminescence properties of perovskite quantum dots (PQDs) make it an ideal luminescent material for the next generation of wide-color gamut displays. Here we design and fabricate dual-function light-sensing/displaying light-emitting devices based on PQDs. The devices can display information as an output port, and simultaneously sense outside light signals as an input port and modulate the display information in a non-contact mode. The dual functions were attributed to the device designs: (1) the hole transport layer in the devices also acts as the light-sensing layer to absorb outside light signals; (2) the introduced hole trapping layer interface can trap holes originating from the light-sensing layer, and thus tune the charge transport properties and the light-emitting intensities. The sensing and display behavior of the device can be further modulated by light signals with different time and space information. This fusion of sensing and display functions has broad prospects in non-contact interactive screens and communication ports.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）