RSC Advances
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2024
·Vol. 14
·期 6
·3659-3666
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IF 3.9
Xunhai Pan,Xiaoyan Lin,Hao Zhang,Lili Liang,Chunxia Pang,Kai Gu,Yang Hu,Hailing Xi
Strippable film decontamination has been considered one of the best prospects for radioactive surface decontamination due to its high decontamination effect and less secondary pollution. However, research into strippable films has until now focused on radioactive decontamination at room temperature. Therefore, it is vital to seek a suitable degradable material for preparing strippable films in removing contaminants in an extremely cold region, as it will face the problem of the freezing of the detergent. Ethyl cellulose (EC) is a kind of degradable biopolymer which is easily dissolved in volatile green organic solvents to form a sol below 0 °C which is advantageous for forming a film. Therefore, it would be the best choice for preparing a strippable film detergent. In this study, EC sols were obtained by placing EC powder into the green solvents anhydrous ethanol and ethyl acetate. The steady and dynamic rheological behavior of EC sols was investigated with a rotary rheometer with the temperature ranging from −10 °C to 0 °C to disclose their spraying performance. Moreover, the radioactive decontamination effect of EC sols and the mechanism were also investigated. The results showed that the EC sols were pseudoplastic fluids which obeyed the Ostwald–de Waele power law below 0 °C. Furthermore, the viscosity of EC sols could be reduced by stirring, which is convenient for large-area spraying during decontamination below 0 °C. At −10 °C, the comprehensive decontamination rates of all plates were over 85%. Therefore, EC sols could be used as a basic material for strippable film decontamination below 0 °C.
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IEEE SENSORS JOURNAL
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2024
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IF 4.3
Haigang Wang,Zhichun Liu,Biling Wang,Mingyang Kong,Dezhi Xu,Liangjie Gao,Qiang Li,Zhipeng Zhao,Wenqi Lu,Xin Zhao,Junsheng Liang
Platinum (Pt) resistance temperature detectors (RTDs) are extensively employed as thin-film temperature sensors. However, agglomeration of Pt thin films occurs above 800 °C due to grain boundary grooving on the free surface, ultimately limiting its application at high temperatures. In this work, a Pt RTD was prepared by depositing multilayer Al2O3 protective layer on Pt thin films using electrodynamic jet printing (EJP) technology. The surface morphology and energy-dispersive spectroscopy spectrum of Pt thin films indicated that the voids on the surface are reduced, the grains’ growth is inhibited, and the movement and grooving of grain boundaries are limited. The test results indicate that the Pt RTD has not failed after six cycles of repeated warming and cooling from 800 °C to 1300 °C. After repeated cycles, the initial resistance of the Pt RTD is with a rate of change of less than 0.5%. In addition, the maximum relative deviation of the resistance in a single cycle is less than 1.6%. The Pt RTD with an 18-layer Al2O3 protective layer has undergone 12 cycles without failure, indicating a cycle life exceeding 10 h. Pt RTDs are stable over the range of 25 °C–1400 °C with correlation coefficients R2 greater than 0.999, showing good linear correlation. It can withstand temperatures up to 1440 °C when printed with 18 protective layers. Compared to a Pt RTD without protective layers, the operating temperature is increased by 40%. This advancement provides a viable solution for the high-temperature monitoring of hot-end components in aerospace applications.
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JOURNAL OF MOLECULAR STRUCTURE
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2024
·
IF 4
Meng Ye,Hongying Hou,Xianxi Liu,Zhaowei Sun,Xiaohua Yu,Ju Rong
With the development of the consumer society, low cost and high performance supercapacitors are being pursued. To realize the practical supercapacitors, developing the cheap and highly capacitive electrode is the most essential. However, it is a harsh challenge to achieve this target based on single-component electrode. Herein, a series of inexpensive ternary-metal-sulfides, 2MnS/Cu 2 S/ x ZnS/C ( x = 0, 0.5, 1, 2, 3) are synthesized by hydrothermal reaction and the subsequent calcination with expired manganese/copper gluconates as the raw materials for the electrode in the pseudocapacitors. Furthermore, the effect of ZnS's content on the electrochemical properties of the ternary composites is also investigated. Specially, the optimal 2MnS/Cu 2 S/xZnS/C( x = 1) can output a specific capacitance of 1608 F/g at 1 A/g in the three-electrode system, while the 2MnS/Cu 2 S/xZnS/C||AC( x = 1) asymmetric supercapacitor can deliver a specific capacitance of 194 F/g at 1 A/g with the desirable energy density (800 W/kg) and power density (70.9 Wh/kg), higher than those of other samples. Especially, even after 2000 cycles at 5.0 A/g, the 2MnS/Cu 2 S/xZnS/C||AC( x = 1) asymmetric supercapacitor also delivers the reversible specific capacitance of 103 F/g with high capacitance retention of 97.0 %, indicating high cycling stability. The outstanding performances of the optimal 2MnS/Cu 2 S/xZnS/C( x = 1) may be attributed to the bridge-effect of ZnS component, which makes up for the low conductivity of MnS component and the low capacitance of Cu 2 S component, thus achieving the best synergistic effect of ternary metal sulfide 2MnS/Cu 2 S/xZnS/C( x = 1) .
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ADVANCED MATERIALS
·
2024
·
IF 27.4
Huiwen Zhang,Hsiao-Chien Chen,Solmaz Feizpoor,Linfeng Li,Xia Zhang,Xuefei Xu,Zechao Zhuang,Zhishan Li,Wenyu Hu,Rony Snyders,Dingsheng Wang,Chundong Wang
The interaction between oxygen species and metal sites of various orbitals exhibits intimate correlation with the oxygen reduction reaction (ORR) kinetics. Herein, a new approach for boosting the inherent ORR activity of atomically dispersed Fe−N−C matrix is represented by implanting Fe atomic clusters nearby. The as-prepared catalyst delivers excellent ORR activity with half-wave potentials of 0.78 and 0.90 V in acidic and alkaline solutions, respectively. The decent ORR activity can also be validated from the high-performance rechargeable Zn–air battery. The experiments and density functional theory calculations reveal that the electron spin-state of monodispersed Fe active sites is transferred from the low spin (LS, t 2g 6 e g 0 ) to the medium spin (MS, t 2g 5 e g 1 ) due to the involvement of Fe atomic clusters, leading to the spin electron filling in σ∗ orbit, by which it favors OH − desorption and in turn boosts the reaction kinetics of the rate-determining step. This work paves a solid way for rational design of high-performance Fe-based single atom catalysts through spin manipulation.
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STAR Protocols
·
2024
·
IF 1.3
Ruipeng Wang,Jingxuan Guo,Hanlu Yao,Xuekai Luo,Yixiang Deng,Yuhang Tian,Yan Zhang,Shangbang Gao
Summary In deep tissue, optogenetics faces limitations with visible light. Here, we present a protocol for near-infrared (NIR) optogenetics manipulation of neurons and motor behavior in Caenorhabditis elegans using emissive upconversion nanoparticles (UCNPs). We describe steps for synthesizing and modifying UCNPs. We then detail procedures for regulating neurons using these UCNPs in the model organism C. elegans . Using NIR light allows for superior tissue penetration to manipulate neuronal activities and locomotion behavior. For complete details on the use and execution of this protocol, please refer to Guo et al., 1 Ao et al., 2 and Zhang et al. 3
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ChemistrySelect
·
2024
·Vol. 9
·期 1
·e202303369
·
IF 1.9
Yalan Long,Yifang Zhan,Shaoli Hong,Sakil Mahmud,Huihong Liu
Graphical Poly(amino acid)-modified screen-printed carbon electrodes were prepared for the concurrent detection of Vitamin C (VC) and Paracetamol (PA). In practical applications, the device successfully detected VC and PA simultaneously in VC Yinqiao tablets, a Chinese-Western pharmaceutical formulation. Electrochemical polarization provides a practical means to enhance the typically sluggish electrochemical kinetics of screen-printed electrodes. This study introduces an electrochemically deposited poly(amino acid) modification on screen-printed carbon electrodes (SPCE) for the concurrent detection of Vitamin C (VC) and Paracetamol (PA). The poly(amino acid)-modified sensor not only addresses the issue of peak potential overlap between VC and PA but also enhances the electrochemical responses for both analytes. For example, Poly(L–Cysteine)-modified SPCE exhibited a linear concentration range of 1.00 to 107.14 μM for VC, with a detection limit of 0.37 μM, and a linear concentration range of 0.10 to 10.71 μM for PA, with a detection limit of 0.033 μM. In practical applications, this device successfully detected VC and PA simultaneously in VC Yinqiao tablets, a Chinese-Western pharmaceutical formulation. The experimental results were satisfactory, with recovery values ranging from 95.13 % to 106.58 % for VC and 95.56 % to 104.12 % for PA, achieved through the standard addition technique applied to the pharmaceutical formulation. The poly(amino acid)-modified SPCE demonstrates heightened sensitivity, lower detection limits, exceptional anti-interference properties, and high reproducibility. These qualities hold significant promise for future advancements in drug detection.
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PHYTOMEDICINE
·
2024
·
IF 6.7
Xiaoliang Dong,Lu Qu,Bingxin Wang,Xiaowei Sha,Bo Wu,Yudong Sun,Xiaohua Pan,Juan Xiong,Jia Sun,Li-Long Pan
ABSTRACT Background Cardiovascular disease is one of the main causes of global mortality, and there is an urgent need for effective treatment strategies. Gut microbiota-dependent metabolite trimethylamine-N-oxide (TMAO) promotes the development of cardiovascular diseases, and shizukaol C, a natural sesquiterpene isolated from Chloranthus multistachys with various biological activities, might exhibit beneficial role in preventing TMAO-induced vascular inflammation. Purpose The purpose of this study was to investigate the anti-inflammatory effects and the underlying mechanisms of shizukaol C on TMAO-induced vascular inflammation. Methods The effect and underlying mechanism of shizukaol C on TMAO-induced adhesion molecules expression, bone marrow-derived macrophages (BMDM) adhesion to VSMC were evaluated by western blot, cell adhesion assay, co-immunoprecipitation, immunofluorescence assay, and quantitative Real-Time PCR, respectively. To verify the role of shizukaol C in vivo , TMAO-induced vascular inflammation model were established using guidewire-induced injury on mice carotid artery. Changes in the intima area and the expression of GSTpi, VCAM-1, CD68 were examined using haematoxylin-eosin staining, and immunofluorescence assay. Results Our data demonstrated that shizukaol C significantly suppressed TMAO-induced adhesion molecule expression and the bone marrow-derived macrophages (BMDM) adhesion in vascular smooth muscle cells (VSMC). Mechanically, shizukaol C inhibited TMAO-induced c-Jun N-terminal kinase (JNK)-nuclear factor-kappa B (NF-κB)/p65 activation, and the JNK inhibition was dependent on the shizukaol C-mediated glutathione-S-transferase pi (GSTpi) expression. By further molecular docking and protein-binding analysis, we demonstrated that shizukaol C directly binds to Keap1 to induce Nrf2 nuclear translocation and upregulated GSTpi expression. Consistently, our in vivo experiment showed that shizukaol C elevated the expression level of GSTpi in carotid arteries and alleviates TMAO-induced vascular inflammation. Conclusion : Shizukaol C exerts anti-inflammatory effects in TMAO-treated VSMC by targeting Keap1 and activating Nrf2-GSTpi signaling and resultantly inhibits the downstream JNK-NF-κB p65 activation and VSMC adhesion, and alleviates TMAO-induced vascular inflammation in vivo , suggesting that shizukaol C may be a potential drug for treating TMAO-induced vascular diseases.
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Polymer Chemistry
·
2025
·
IF 3.9
Yang Gao,Jing Li,Jiaming Hu,Lu-kun Wu,Shuai Zhang,Kai Du
Epoxy acrylate (EA) has excellent thermal performance, mechanical properties, and chemical stability, making it become typical representative of thermosetting resins. Dynamic C-N bond was introduced through chemical click between triazolinedione (TAD) and indole, resulting in EA polymers with different mass ratios. Among them, the 80wt% EA-10:3 has strongest tensile strength of 71.03 MPa with an elongation at break of 7%, while the 90wt% EA-10:2.5 has relatively excellent modulus and hardness of 5.21 GPa and 223 MPa, respectively. In addition, 90wt% EA-10:3 polymer exhibits good two-photon polymerization printing performance with scanning speeds of 100 μm/s -100000 μm/s and laser powers of 5 mW-50 mW. Simultaneously the sample block exhibits mechanical properties with modulus and hardness of 5.12 GPa and 230 MPa under the laser powers of 30 mW. In situ relaxation fluorescence spectroscopy was used to characterize the dynamic behavior of C-N bonds in force reversible polymer networks. This work proposes a valuable strategy to enhance the functionality of EA polymers in various special performance material applications, while maintaining its strength and toughness.
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Chao Zhao,Jiayi Zhu,Xingye Ma,Jiaqi Sun,Ning Wang,Xi Chen,Xiaohan Chen,Yihao Wang,Chuanquan Wang,Xinyue Jing
Rapid and accurate pathogen detection is critical for optimizing clinical decision-making within precision medicine frameworks, specifically for identifying Staphylococcus aureus (S. aureus) in wound infections. Most of conventional detection methods suffer from procedural complexity, protracted analysis times, and insufficient sensitivity, thereby constraining their clinical deployment. In this work, an optical fiber surface plasmon resonance (SPR) sensor enhanced by Ti 3 C 2 T x MXene was developed for detecting S. aureus , biofunctionalized with goat anti-human immunoglobulin G (IgG). The optimal thickness of Ti 3 C 2 T x MXene layer, determined to be approximately 94 nm based on maximizing figure of merit (FOM) of 17.88 RIU −1 , yielded high sensitivity and low full width at half maximum (FWHM). By monitoring SPR wavelength shifts in the transmission spectra, the sensor was employed to detect S. aureus with a low limit of detection (LOD) of 1.14 CFU/mL and a high sensitivity of 3.063 nm/log (CFU/mL). It exhibited excellent linearity across the concentration range of 10 2 –10 8 CFU/mL, alongside high stability and selectivity. Validation using S. aureus -infected wound tissue from diabetic murine models exhibited a precision exceeding 97 %. This technology represents a promising avenue for developing next-generation, high-performance biosensing platforms with significant translational potential in precision medicine diagnostics.
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JOURNAL OF FLUORESCENCE
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2024
·
IF 2.6
Huang Xiaoli,Chang Le,Ge Jianxin,Wang Ping,Yin Rui,Liu Guanqi,Wang Guopin
Colorectal cancer was one of the major malignant tumors threatening human health and β-Gal was recognized as a principal biomarker for primary colorectal cancer. Thus, designing specific and efficient quantitative detection methods for measuring β-Gal enzyme activity was of great clinical test significance. Herein, an ultrasensitive detection method based on Turn-on fluorescence probe (CS-βGal) was reported for visualizing the detection of exogenous and endogenous β-galactosidase enzyme activity. The test method possessed a series of excellent performances, such as a significant fluorescence enhancement (about 11.3-fold), high selectivity as well as superior sensitivity. Furthermore, under the optimal experimental conditions, a relatively low limit of detection down to 0.024 U/mL was achieved for fluorescence titration experiment. It was thanks to the better biocompatibility and low cytotoxicity, CS-βGal had been triumphantly employed to visual detect endogenous and exogenous β-Gal concentration variations in living cells with noteworthy anti-interference performance. More biologically significant was the fact that the application of CS-βGal in BALB/c nude mice was also achieved successfully for monitoring endogenous β-Gal enzyme activity.
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MATERIALS RESEARCH BULLETIN
·
2024
·
IF 5.3
Yunfei Yang,Hongfang Shen,Congcong Ma,Bo Ma,Dong Li,Haibo Li,Youjun Lu,Yanmin Wang
It remains a huge challenge to design a kind of high performance, multifunctional and low cost photocatalysts driven by visible light for the remediation of pollutants from waste water. In this work, the carbon coated Tb 2 O 3 /Er 2 O 3 /TiO 2 nanotubes (Tb 2 O 3 /Er 2 O 3 /TiO 2 @C) 0D/1D hybrid photocatalysts were synthesized by a microwave hydrothermal method. Essentially, the Er 2 O 3 nanoparticles can absorb low-energy photons at 800–980 nm and emit high-energy photons to TiO 2 through the up-conversion effect, meanwhile, the Tb 2 O 3 act as a redox center to promote the separation of photoinduction charges since the instantaneous photoelectric density was increased by 10 times by compared to TiO 2 @C. As a result, the photodegradation efficiency of the optimized Tb 2 O 3 /Er 2 O 3 /TiO 2 @C photocatalysts is about 15.7 times higher than that of TiO 2 @C under visible light irradiation for decomposing rhodamine B, respectively. Moreover, the photodegradation efficiency remained above 70 % after reused for 5 times. Thus, the enhanced synergistic effect between Er 2 O 3 and Tb 2 O 3 promises the excellent photodegradation activity and reduce cost. It remains a huge challenge to design a kind of high performance, multifunctional and low cost photocatalysts driven by visible light for the remediation of pollutants from waste water. The carbon coated Tb 2 O 3 /Er 2 O 3 /TiO 2 nanotubes (Tb 2 O 3 /Er 2 O 3 /TiO 2 @C) 0D/1D hybrids were synthesized by a microwave hydrothermal method. The Er 2 O 3 nanoparticles can absorb low-energy photons at 800–980 nm and emit high-energy photons to TiO 2 through the up-conversion effect, meanwhile, the Tb 2 O 3 act as a redox center to promote the separation of photoinduction charges since the instantaneous photoelectric density was increased by 10 times by compared to TiO 2 @C. As a result, the photodegradation efficiency of the optimized Tb 2 O 3 /Er 2 O 3 /TiO 2 @C photocatalysts is about 15.7 times higher than that of TiO 2 @C under visible light irradiation for decomposing rhodamine B. Moreover, the photodegradation efficiency remained above 70 % after reused for 5 times. Thus, the enhanced synergistic effect between Er 2 O 3 and Tb 2 O 3 promises the excellent photodegradation activity and reduce cost.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Arif Nawaz,Jalwa Afreeq,Azhar Iqbal,Nisar Ali,Adnan Khan,Haifa Zhai,Rayya Ahmed Al Balushi,Mohammad M. Al-Hinaai,Thuraya Al-Harthy
Construction of integrated photo-induced and spatially adjacent redox half reactions dual site photocatalysts to boost their synergy for practical applications renders substantial challenges. Here in Mn 0.5 Sn 2 Co 0.5 O 3 (MSCO) was integrated with carboxymethyl chitosan derived N x -C (CMChi-C) for the first time to fabricate Mn 0.5 Sn 2 Co 0.5 O 3 -CMChi-C (MSCO-CMChi-C) composite. The fabricated photocatalyst was investigated by various characterizations such as FTIR, XRD, EDS, XPS, SEM, H-NMR, HR-TEM, SAED etc. The composition, shape, morphology, structural information confirms the successful synthesis of MSCO-CMChi-C. The tailored MSCO-CMChi-C material achieved 95 % tetracycline (TCs) degradation which is 2.968, 1.301 and 0.84 times greater than SCO, MSCO, and MSCO@N-Chi-C respectively. Results showed that 73.15 % TCs photodegradation (2.29 times greater than SCO) executed by the spatial adjacent redox interface (Mn Co) utilizing spin polarization to hinder charge recombination inside atomic vicinity of MSCO. The higher photocatalytic efficiency of MSCO-CMChi-C has stemmed by addressing persistent dysfunctions/defects succeeding in poor light harvesting ability of semiconductors, low carrier mobility and short exciton diffusion tailed with organic polymer. The MSCO-CMChi-C was further used for MB and EB dyes degradations, resulting in 90 and 96 % degradation in 40 min of visible light irradiation respectively. The higher photocatalytic activity of MSCO-CMChi-C resulted from conferring and integration of structural and functional characteristics of individual components. The spatial adjacent sites (Mn Co) of MSCO facilitates redox reactions utilizing spin polarization at same time integration of the CMChi derived N x -C enhances light sensitivity and charge mobility intrigue exceptional physiochemical properties exhibited by MSCO-CMChi-C.
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