Nanoscale Research Letters
·
2022
·Vol. 17
·期 1
·1-12
·
IF 5.418
Wang Linxuan,Li Liang,Yuan Maohui,Yang Zining,Han Kai,Wang Hongyan,Xu Xiaojun
Spectrally determination of temperature based on the lanthanide-doped nanocrystals (NCs) is a vital strategy to noninvasively measure the temperature in practical applications. Here, we synthesized a series of SrF 2 :Yb 3+ /Ho 3+ NCs and simultaneously observed the efficient visible upconversion luminescence (UCL) and near-infrared (NIR) downconversion luminescence (DCL) under 980, 940 and 915 nm excitations. Subsequently, these NCs were further utilized for thermometers based on the Boltzmann (thermally coupled levels, TCLs) and non-Boltzmann (non-thermally coupled levels, NTCLs) of Ho 3+ ions in the first (~ 650 nm), second (~ 1012 nm) and third (~ 2020 nm) biological windows (BW-I, BW-II and BW-III) under tri-wavelength excitations. The thermometric parameters including the relative sensitivity ( \(S_{{\text{r}}}\) ) and temperature uncertainty ( \(\delta T\) ) are quantitatively determined on the I 648 / I 541 (BW-I), I 1186 / I 1012 (BW-II), and I 1950 / I 2020 (BW-III) transitions of Ho 3+ ions in the temperature range of 303–573 K. Comparative experimental results demonstrated that the thermometer has superior performances.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2022
·Vol. 33
·期 24
·19331-19343
·
IF 2.779
Li Weiyin,Zhao Tongtong,Ding Lingling
Au@BSA was prepared at pH 8, pH 9, pH 10, pH 11, pH 11.4, and pH 12 as the working electrode of the non-enzymatic glucose sensor by biological template method. The six kinds of gold-cluster film working electrodes sintered by Au@BSA show golden color, especially the golden films corresponding to pH 8 and pH 12 are obvious. The gold-cluster films at pH 8, pH 9, pH 10, and pH 11 showed mono-layer gold nanoparticles, while the gold-cluster film at pH 11.4 showed porous structure. The gold-cluster film prepared at pH 12 presents a multi-layer 3D structure composed of a large number of gold nanoparticles. The linear detection range of the non-enzymatic glucose sensor prepared at pH 8 is the widest among the six sensors, and its sensitivity is also better than the other four sensors except the sensor prepared at pH 12. The sensor with the gold-cluster film-modified working electrode prepared at pH 12 show the highest sensitivity (330.002 μA mM −1 cm −2 ), because multi-layer 3D structure can bring more electric catalytic active site for this sensor. The electrochemical impedance spectroscopy showed that the specific surface area of the sensor prepared at pH 12 was much larger than that of the other five sensors. We provide a pH cycling method for once shaping preparation that can be extended to other metal films or metal-oxide films electrochemical interfaces. The Au@BSA non-enzymatic glucose sensor prepared in this paper is stable and can resist the toxicity of excessive chloride ions without losing activity.
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Advanced Composites and Hybrid Materials
·
2022
·Vol. 5
·期 3
·2138-2153
·
IF 11.806
Ding Zhaodong,Tian Zhongjian,Ji Xingxiang,Dai Hongqi,Si Chuanling
Inspired by the hydrophobic waxy layer structure on the back of the desert beetle, a super-hydrophobic material was prepared via the sol–gel silanisation of porous cellulose membrane (CM) using triethoxysilanes with different carbon chain lengths (R-siloxane) and (CH 3 CH 2 O) 4 Ti as a catalyst in 3 min. The R-siloxane CM was both super-hydrophobic and oleophilic (water contact angle (CA) > 150°, dodecane CA ≈ 0°) and resisted liquids with surface tensions as low as 15 mN·m −1 , correlated with the length of the R-siloxane and roughness of the CM. Instructed by the water collection behavior of the desert beetle, a pristine filter CM was added on the R-siloxane filter CM to accelerate separation of Span 80–stabilised water-in-oil emulsions by generating a surface energy gradient (SEG). The composite membrane with SEG separated the emulsions with higher surfactant concentrations and provided a higher efficiency up to 99.98% compared with single-layer R-siloxane membrane. This bio-inspired catalytic one-step approach for preparing R-siloxane cellulose composite membranes can potentially replace petroleum-based products for oil purification. Graphical Abstract Bio-inspired preparation of R-siloxane composite cellulose membrane with surface energy gradient for highly efficient water-in-oil emulsion separation.
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Advanced Composites and Hybrid Materials
·
2022
·Vol. 5
·期 3
·1939-1950
·
IF 11.806
He Yuxin,Zhou Mengyang,Mahmoud M. H. H.,Lu Xushen,He Guanyu,Zhang Li,Huang Mina,Elnaggar Ashraf Y.,Lei Qiang,Liu Hu,Liu Chuntai,Azab Islam H. El
With the rapid development of flexible wearable strain sensor systems, electronic textiles with comfort and controllable strain/pressure-sensing capabilities have attracted great interest. However, it is still a great challenge to prepare multifunctional wearable strain/pressure sensor with an ultra-low detection limit through a facile and cost-effective method. Here, conductive carbon nanotubes modified silk nonwoven fabric (CNTs/SNWF) composite was successfully prepared by the surface micro-dissolution and adhesion technology (SD&AT). Micromorphology analysis showed that CNTs were adhered firmly on the surface of silk fiber to form an effective conductive network. The conductive CNTs/SNWF-based strain/pressure sensor can detect a strain as low as 0.05% and an ultralow pressure of 10 Pa, showing an ultrahigh discernibility. Besides, it also exhibited excellent sensing stability and reproductivity under different conditions, making it applicable in the field of real-time human movement monitoring. Moreover, electronic skin was also established based on the conductive CNTs/SNWF to recognize different tactile stimulus. Interestingly, the prepared conductive CNTs/SNWF also displayed great applicability for optical and thermal sensing, endowing it with more functionality for next-generation wearable electronics.
Graphical abstract
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JOURNAL OF PLANT GROWTH REGULATION
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2022
·Vol. 42
·期 4
·2162-2175
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IF 4.64
Chen Chen,Chen Hong,Han Chao,Liu Zemao,Yu Fangyuan,Wu Qikui
Due to the increasing demand for biofuel feedstock production, Styrax tonkinensis , as a woody oilseed tree species, has received much more attention. However, the effects of various plant growth regulators on its seed development haven’t been explored deeply. Here, we applied 24-epibrassinolide (EBL) and methyl jasmonate (MJ) on the whole trees, and the aim of our study was to explore their effects on seed development of S. tonkinensis as well as seed chemical compositions, especially seed lipid metabolism. The results showed that EBL and MJ promoted the seed development, which was reflected in the increase of fresh and dry weight, as well as transverse and longitudinal diameter. The concentration of crude fat (CF) exhibited an ‘increase–decrease-increase’ trend, and the peak appeared at 70 days after flowering. EBL (in concentration of 5 μM, EBL5) and MJ (in concentration of 200 μM, MJ200) had the most significant effect on the accumulation of CF and the CF content in single seed. In addition, the activities of enzymes related to fatty acid (FA) synthesis were also higher under the two treatments. 12 FAs were detected using gas chromatography-mass spectrometry, among which palmitic acid, oleic acid, and linoleic acid were the main components. EBL5, EBL10, and MJ200 favored the accumulation of soluble sugar, especially in the middle and late stages. The starch concentration in seeds was lower, but it significantly increased after the application of EBL5. Furthermore, our results demonstrated that EBL and MJ enhanced SOD and POD activity while decreased MDA content. We highlighted that EBL and MJ promoted seed development of S. tonkinensis , affected seed chemical compositions and contributed to the accumulation of CF and FA.
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CELLULOSE
·
2022
·Vol. 29
·期 11
·6161-6179
·
IF 6.123
Xu Kaihui,Hasi Qimeige,Mu Xiaotong,Xiao Chaohu,Zhang Yuhan,Jiang Xiaoqian,Xu Juanjuan,Chen Lihua,Li An
The efficient elimination of petroleum hydrocarbon (PH) pollution remains a big challenge due to their easy accumulation and severe environmental toxicity. In this study, we demonstrated a novel nanocellulose based hydrophobic/lipophilic macroporous sponge loaded with microorganisms (B10NCS-DTMS, sponge prepared from nanocellulose: NCS, the NCS was immobilized 10 times: B10NCS, The B10NCS surface was sprayed with modified n-dodecyltrimethoxysilane: B10NCS-DTMS) for efficient elimination of PH pollution in water. Compared with the materials previously studied, this microporous/ superwetting structure can load more microorganisms and provide space and nutrients for the growth and reproduction of microorganisms, and mixed microorganisms have an excellent synergistic degradation effect, which greatly improves the degradation potential. We modified the surface of material loaded with microorganisms by using high stability modified long chain silane solution, which showed excellent selective adsorption performance. As expected, using a petroleum n-hexadecane solution with a concentration of 5% as model oily wastewater, B10NCS-DTMS possesses both a superior selective absorption of about 99% within 12 h and a high degradation rate of 95.85% within 96 h. In addition, B10NCS-DTMS showed more strong tolerance under different pH, temperature, and initial concentration conditions. Compared with other studies, the B10NCS-DTMS has the advantages of high biological activity, scalable manufacturing, no secondary pollution, and green and high efficiency, which might pave a new way to efficiently eliminate PH pollution from water. Graphical Abstract
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2022
·Vol. 33
·期 19
·15894-15903
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IF 2.779
Hu Zeqing,Xu Huihong,Lin Yangjian,Liu Yu,Xu Junsheng,Li Zhou,Song Jiming
Currently, Cu 2 GeS 3 has been obtained through solid-state reaction. However, the pure phase Cu 2 GeS 3 synthesized still faces challenges due to the low boiling point of the sulfur element. Herein, we have prepared pristine Cu 2 GeS 3 by a two-step method. Firstly, the pure phase GeS 2 was synthesized by solvothermal method and then used the freshly as-synthesized GeS 2 as raw material to react with copper powder to fabricate pure phase Cu 2 GeS 3 . Further, the thermoelectric properties of Cu 2 GeS 3 crystal have been explored. At room temperature, the electric resistance value measured by multimeter was ~ 2634 Ω for intrinsic Cu 2 GeS 3 crystal, which exceeded the instrument (electrical conductivity/Seebeck coefficient) test range of 0–2000 Ω, so there is no relevant report in the thermoelectric field about Cu 2 GeS 3 crystal. In order to improve its conductivity, Cu 2 GeS 3 crystal is alloyed with a small amount of Te powder to obtainable Cu 2 GeS 3− x Te x samples, which have obvious thermoelectric properties. By adjusting the content of Te, finally, the electrical conductivity of the Cu 3 GeS 2.6 Te 0.4 sample reached 364.20 S m −1 and the figure-of-merit ZT max value of ~ 0.12 were obtained at 816 K.
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Nature Communications
·
2022
·Vol. 13
·期 1
·1-12
·
IF 17.694
Shi Qinhao,Qi Ruijuan,Feng Xiaochen,Wang Jing,Li Yong,Yao Zhenpeng,Wang Xuan,Li Qianqian,Lu Xionggang,Zhang Jiujun,Zhao Yufeng
The application of sodium-based batteries in grid-scale energy storage requires electrode materials that facilitate fast and stable charge storage at various temperatures. However, this goal is not entirely achievable in the case of P2-type layered transition-metal oxides because of the sluggish kinetics and unfavorable electrode|electrolyte interphase formation. To circumvent these issues, we propose a P2-type Na 0.78 Ni 0.31 Mn 0.67 Nb 0.02 O 2 (P2-NaMNNb) cathode active material where the niobium doping enables reduction in the electronic band gap and ionic diffusion energy barrier while favoring the Na-ion mobility. Via physicochemical characterizations and theoretical calculations, we demonstrate that the niobium induces atomic scale surface reorganization, hindering metal dissolution from the cathode into the electrolyte. We also report the testing of the cathode material in coin cell configuration using Na metal or hard carbon as anode active materials and ether-based electrolyte solutions. Interestingly, the Na||P2-NaMNNb cell can be cycled up to 9.2 A g −1 (50 C), showing a discharge capacity of approximately 65 mAh g −1 at 25 °C. Furthermore, the Na||P2-NaMNNb cell can also be charged/discharged for 1800 cycles at 368 mA g −1 and −40 °C, demonstrating a capacity retention of approximately 76% and a final discharge capacity of approximately 70 mAh g −1 .
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JOURNAL OF NANOBIOTECHNOLOGY
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2022
·Vol. 20
·期 1
·1-13
·
IF 9.429
Luo Zhenyu,Luo Lihua,Lu Yichao,Zhu Chunqi,Qin Bing,Jiang Mengshi,Li Xiang,Shi Yingying,Zhang Junlei,Liu Yu,Shan Xinyu,Yin Hang,Guan Guannan,Du Yongzhong,Cheng Ningtao,You Jian
Adoptive cell therapy (ACT) was one of the most promising anti-tumor modalities that has been confirmed to be especially effective in treating hematological malignancies. However, the clinical efficacy of ACT on solid tumor was greatly hindered by the insufficient tumor-infiltration of cytotoxic CD8 + T cells. Herein, we constructed a nanoplatform termed dual-binding magnetic nanoparticles (DBMN) that comprised PEG-maleimide (Mal), hyaluronic acid (HA) and Fe3O4 for adoptive T cell-modification and ACT-sensitization. After a simple co-incubation, DBMN was anchored onto the cell membrane (Primary linking) via Michael addition reaction between the Mal and the sulfhydryl groups on the surface of T cells, generating magnetized T cells (DBMN-T). Directed by external magnetic field and in-structure Fe3O4, DBMN-T was recruited to solid tumor where HA bond with the highly expressed CD44 on tumor cells (Secondary Linking), facilitating the recognition and effector-killing of tumor cells. Bridging adoptive T cells with host tumor cells, our DBMN effectively boosted the anti-solid tumor efficacy of ACT in a mouse model and simultaneously reduced toxic side effects.
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MACROMOLECULAR RESEARCH
·
2022
·Vol. 30
·期 8
·536-546
·
IF 2.127
Wang Huan,Li Li,Kang Yan,Yin Xue,Lei Xuedi,Yang Jing,Xi Hui,Xu Xueqing,Yang Zhiwang,Lei Ziqiang
To reduce the fire hazard of epoxy resin (EP), PA-CS-M (where PA = phytic acid, CS = chitosan, M = Cu 2+ , Co 2+ , Al 3+ , Zn 2+ , Mn 2+ ) environmental friendly flame retardant is prepared by a simple and green method. By comparing the data after cone calorimetry test (CCT) of various composites, it is found that when 5 wt% PA-CS-Mn is added to EP, it has good flame retardant and smoke suppression performance. The peak heat release rate (pk-HRR) decreased by 38% and the smoke production rate (SPR) decreased by 33%. In addition, some toxic smoke such as CO has been significantly inhibited. The structures and morphologies of the materials were investigated by Fourier transform infrared (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). When combined with expandable graphite (EG), it is found that when the ratio of PA-CS-Mn to EG is 1:5, the pk-HRR value and SPR value decreased by 69.8% and 66.6%, respectively. More importantly, the mechanical properties of the EP composites have also been greatly improved. The flexural modulus reaches 5.04 GPa, which is 52.3% higher than pure EP, and the flexural strength increases to 79.4 MPa, which also shows an increase of 41.4% as to the matrix.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2022
·Vol. 414
·期 26
·7731-7740
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IF 4.478
Liao Jun,Yu Zhicheng,Fu Li,Liu Jia,Jia Li
Realizing the rapid and on-site detection of biothiols in complex biological and food samples using simple assays and devices remains a major challenge. In this study, biothiols containing sulfhydryl groups were found to be able to inhibit the photo-triggered oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB). Based on the discovery, using the commercially available and low-cost TMB as the chromogenic substrate, an enzyme-free colorimetric approach was developed for the rapid determination of biothiols. The method does not involve the introduction of any natural enzymes, nanoenzymes, and external oxidants. The mechanisms of the photoinduced oxidation of TMB and the detection of biothiols were proposed. Furthermore, a smartphone-based portable device integrated with test strips was constructed by the 3D printing technique. This device can simultaneously meet the requirements of the photocatalytic oxidation reaction of TMB and the detection of biothiols. The entire process only takes less than 5 min. The successful detection of cysteine in urine and milk samples demonstrates the great potential of the device in the on-site assays. Graphical abstract
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IONICS
·
2022
·Vol. 28
·期 10
·4631-4639
·
IF 2.961
Huang Hong-bo,Liu Cai-ling,Yang Yue,Luo Shao-hua
Na 3 V 2 (PO 4 ) 3 with NASICON structure is regarded as a hopeful cathode in sodium-ion batteries (NIBs). Nevertheless, the immanently inferior electronic conductivity significantly restricts its electrochemical performance and practical application. In this work, a facile solid-state sintering approach employing citric acid as both the reduction agent and carbon source has been developed to prepared Na 3 V 2 (PO 4 ) 3 /C composite. The influence of different sintering temperatures on the structure, morphology, and electrochemical performance of Na 3 V 2 (PO 4 ) 3 /C for NIBs was systematically investigated. The results indicate that the Na 3 V 2 (PO 4 ) 3 /C sample calcined at 850 °C (NVP/C-850) presents the best electrochemical property among the as-obtained four NVP/C samples studied. The optimized NVP/C-850 composite exhibits a reversible capacity of 117.4 mAh/g at 0.2 C, and after 100 cycles, capacity retention of 94.7% was kept. Besides, among the four electrodes, NVP/C-850 electrode exhibited smallest resistance and highest Na + diffusion coefficient. Thus, the outstanding results demonstrate potential application of the NVP/C for NIBs.
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