FOOD CHEMISTRY
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2024
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IF 8.5
Yimeng Zhang,Chuanliang Wang,Guo Wei,Xuesong Wang,Wanhui Liu,Gangqiang Yang,Peng Zhang,Qinglian Li,Xuhui Geng,Lingxin Chen,Zhihua Song
Malachite green (MG) possesses high toxicity, therefore, the detection of MG in fish tissues is of vital importance. A novel core–shell MIPs doped CdTe quantum dots coated silica nanoparticles (CdTe-MIP/SiO 2 NPs) were synthesized via a simple one-pot strategy. The materials were characterized carefully. The resulting CdTe-MIP/SiO 2 NPs were coated on the thin layer chromatography plate, and coupled with miniaturized fluorimeter for fluorescence detection of MG in fish samples. The resulting CdTe-MIP/SiO 2 NPs based system possessed good linearity (0.01 ∼ 20 μmol/L), high recoveries (98.36 %∼101.45 %) and low detection limit (3.7 nmol/L) for MG. Furthermore, CdTe-MIP/SiO 2 NPs based system were employed to measure fish samples spiked with MG, meanwhile, HPLC was utilized to evaluate the accuracy and reliability. And the paired t -test was conducted to evaluate differences between fluorescence method and HPLC, P > 0.05 means no significant difference was observed, the results demonstrated that both fluorescence method and HPLC are suitable for MG analysis.
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高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2024
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IF 5.8
Yao Chen,Hong Wu,Bin Zhang,Junqi Chen,Zizhen Zhou,Xu Lu,Yun Zhou,Guoyu Wang,Guang Han,Xiaoyuan Zhou
Cu 2 Te-based compounds show promise for thermoelectric applications, but their synthesis typically involves ball milling or melting-annealing processes. Here, we present a surfactant-free microwave-assisted solvothermal method for the controlled synthesis of Cu 2 Te 1− x S x ( x = 0, 0.1, 0.2, 0.3, 0.4 and 0.5) nanostructures at 503 K within just 30 min. The substitution of sulfur promotes the formation of a hexagonal structure in Cu 2 Te 1− x S x with x of 0.2 – 0.5, and inhibits phase transitions during heating. Moreover, the alloying of sulfur contributes to a reduction in hole concentrations toward the optimal range, resulting in enhanced power factors ( e.g. , 910 μW m −1 K −2 at 825 K for Cu 2 Te 0.9 S 0.1 ) and reduced thermal conductivity ( e.g. , 0.53 W m −1 K −1 at 825 K for Cu 2 Te 0.5 S 0.5 ). Ultimately, Cu 2 Te 0.5 S 0.5 achieves a maximum dimensionless figure of merit of 0.80 at 825 K. This study offers a controllable solution-based strategy for synthesizing Cu 2 Te-based materials with tunable compositions and enhanced thermoelectric performance.
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CERAMICS INTERNATIONAL
·
2024
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IF 5.1
Jin Liu,Liexiang Ren,Jujie Luo,Ning Lv
In this study, bismuth telluride–based hybrids consisting of nanosheets were successfully prepared by disproportionation induced by microwave irradiation and applied on supercapacitor electrodes. Various analytical techniques were adopted to analyze the structure and composition of Bi 2 Te 3 /Bi 2 TeO 5 . The unique disproportionation (Te 0 →Te 2+ +Te 4+ ) results in an interlocking nanosheet, in which the lamellar interspersed structure on the lamella can be visualized through high-magnification scanning electron microscopy. The large layer spacing with the interspersed structure provides more storage sites for electrolyte ion interactions and allows for better stabilization of the electrode structure. Result of electrochemical studies indicates that Bi 2 Te 3 /Bi 2 TeO 5 enables a capacity of 860 F g −1 (1 A g −1 ) and maintains 74.5% of the initial capacity through 2000 charge/discharge cycles. The Bi 2 Te 3 /Bi 2 TeO 5 anode is integrated into an ultracapacitor to attain a remarkable energy density of 89 Wh kg −1 in 6 M KOH.
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ACS Applied Materials & Interfaces
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2024
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IF 8.3
Enzi Chen,Qing Zhu,Yaoyu Duan,Junhao Tang,Runze Zhan,Jingwen Huang,Xi Wan,Kun Chen,Shaozhi Deng
Integrating high-quality dielectrics with two-dimensional (2D) transition metal chalcogenides (TMDCs) is crucial for high-performance electronics. However, the lack of dangling bonds on 2D material surfaces complicates direct dielectric deposition. We propose using atomic layer deposition (ALD) to integrate ultrathin high-κ dielectric directly on 1T′-MoTe2 surfaces, facilitating the creation of high-performance back-gated field-effect transistors (FETs). Exploiting 1T′-MoTe2’s natural oxidation in ambient conditions, we directly deposit dense and uniform HfO2 dielectric films below 5 nm, achieving an equivalent oxide thickness (EOT) of 0.97 nm. The resulting back-gate transistors, with a monolayer MoSSe on HfO2/1T′-MoTe2, show a current on/off ratio over 105 and operate at low voltages (<1 V), indicating high gating efficiency and a charge carrier mobility of 2.93 cm2V–1s–1. Additionally, we demonstrate a 6 × 5 bottom-gated array of MoSSe transistors using all-1T′-MoTe2 electrodes, achieving an 86.7% sample yield. Our approach also enables the creation of various integrated logic circuits such as inverters, NAND, and NOR gates. This research offers a feasible method for integrating high-κ dielectric films using industrially compatible ALD processes, providing excellent thickness control, uniformity, and scalability for 2D electronic devices.
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JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Zhihua Song,Yimeng Zhang,Guo Wei,Mingxuan Zhang,Lei Sui,Jinhua Li,Lingxin Chen
Phycocyanin (PC) is of great significance to biomedicine and water environmental safety. Hence, it is indispensable to develop facile and rapid method for PC determination. In this investigation, a system containing lateral flow chromatography (LFC) strip (which was deposited with molecularly imprinted polymer (MIP) capped CdTe quantum dots (QDs) based mesoporous structured coated silica nanoparticles, SiO 2 @QDs@ms-MIP NPs) and miniaturized fluorimeter was first fabricated. In detail, a two-step strategy was utilized for preparation of SiO 2 @QDs@ms-MIP NPs, which consisted of modification of CdTe QDs onto the silica NPs first, and synthesis of mesoporous imprinting shell by using PC as template molecule and cetyltrimethylammonium bromide (CTAB) as surfactant. After that, novel fluorescence NPs possessing specific recognition and sensitivity toward PC in seawater and lake water were acquired. The resulting fluorescent sensing system exhibited outstanding performances, which included excellent sensitivity (4.5 nmol/L), satisfactory specificity (imprinting factor, 2.31), appropriate linearity range (0.01–5 μmol/L), good recovery (96.0–101.7 %), excellent stability (relative standard deviation, RSD<1.1 %), wonderful reproducibility (RSD<1.1 %), and excellent anti-interference ability. The results of the fluorescent sensing system were superior to those of the commonly used ultraviolet (UV) method. The proposed strategy showed great potential for fast (<10 min) and convenient fluorescence detection of PC in real samples.
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Acta Metallurgica Sinica-English Letters
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2025
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IF 3.9
Yuan Baocheng,Wen Yi,Wang Lei,Li Zhihao,Wang Hong-Chao,Chang Cheng,Zhao Li-Dong
Thermoelectric materials possess tremendous potential in energy regeneration owing to their capacity to produce power directly from heat. SnTe, a lead-free compound, is a prospective thermoelectric material. However, because of its elevated thermal conductivity, the thermoelectric performance of undoped SnTe remains at a low level. In this work, we induce ternary compounds CuFeS 2 into the SnTe matrix by ball milling. We observe the decomposition of CuFeS 2 , which decomposes into FeS, Cu 2 S, and other binary compounds. These newly generated binary compounds form micropores and secondary phases in the matrix. Combined with the natural grain boundaries in the polycrystal, they form all-scale hierarchical structures within the material, resulting in reduced lattice thermal conductivity. Overall, the produced SnTe + 2 wt% CuFeS 2 composites show the peak dimensionless figure of merit ( ZT ) up to 0.33 at 673 K, an increase of ~ 100% compared to the undoped SnTe.
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Matter
·
2025
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IF 17.5
Li Yang,Hao Wu,Fei Guo,Gaojie Zhang,Wenfeng Zhang,Haixin Chang
Electrical control of the anomalous Hall effect (AHE) provides an important gateway to reveal and regulate topological properties of spins. However, direct, immediate electrical tuning of the AHE in materials has been elusive, unfeasible, and rarely reported. Here, we demonstrate direct, immediate, nonlinear, electric current regulation of the AHE in a single, novel, van der Waals, room-temperature, ferromagnetic, ultrathin, two-dimensional (2D) crystal for intrinsic sensitivity of nodal electronic structures induced by 2D spin-orbit coupling (SOC) in a 2D quantum limit with an ultrasmall current (∼10 2 A cm −2 ). The multivalued electrical tuning of anomalous Hall resistance (R AHE ) ( R A H E 1 R A H E 2 ∗ 100 % ) is up to 584% and remains 126% at room temperature. The squared correlation between R AHE and longitudinal resistance indicates an SOC-dominated Berry curvature-induced AHE. This immediate-current AHE with distinct dependence on the dimension, crystal layer, and electronic topology provides unique quantum platforms for probing the essence of the dimension and for low-power spintronics and brain-like quantum devices.
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高影响因子
ACS Applied Nano Materials
·
2024
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IF 5.3
Jingke Yao,Xunjie Shang,Jiayi Wei,Liting Guo,Feifan Sheng,Nannan Shao,Limin Chen,Zhe Zhang,Yunlong Zhou,Wei Chen
Biofilm and multidrug-resistant bacteria limit therapy effects on bacteria keratitis. Hence, we developed an all-in-one strategy based on a photothermal trigger to combat multidrug-resistant bacteria and eradicate biofilm. In the nanoplatforms, BSA-Ag2Te nanoparticles (NPs) fabricated by a one-step synthesis approach were utilized as photothermal agents to generate low temperature (40–48 °C) and then modified with RGD (Arg-Gly-Asp) to increase the drug concentration and retention in the cornea. The heat generated from photothermal therapy can accelerate the Ag+ release. In addition, laser-triggered release of Ag+ can significantly increase the ROS content in the bacteria. This synergistic approach could effectively eradicate multidrug-resistant bacteria and biofilm by photothermal therapy (PPT) and the combination of Ag+ and ROS. Based on the synergistic treatment of PTT, Ag+, and ROS, BSA-Ag2Te@RGD NPs exhibited outstanding antibacterial effects on a mice MRSA-infected keratitis model. BSA-Ag2Te@RGD NPs will be promising candidates for applications of low-temperature PTT in bacterial keratitis treatments.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
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IF 13.3
Yaqiang Wang,He Zhang,Yi Wu,Youbo Xing,Xin Guo
CuInTe 2 is the focus of much research interest in I-III-VI 2 diamondoid compounds due to its potentially high thermoelectric performance. However, its unmatched transport behaviors among electrical and thermal properties seriously impede enhanced thermoelectric performance. In this work, we demonstrate that high pressure can dual-optimize the electrical and thermal transport properties, leading to enhanced thermoelectric performance in CuInTe 2 with cationic defects. The results indicate that the carrier concentration level is increased while greatly enhancing carrier mobility owing to the influence of high pressure on the band and electronic structures, realizing an excellent power factor of 1406 μWm −1 K −2 . Furthermore, high-pressure treatments and cationic defects can introduce multiple defect structures with various sizes, strongly scattering full-frequency phonons to reduce lattice thermal conductivity. With these great merits enabled by high pressure, the thermoelectric performance of CuInTe 2 with cationic defects is improved and a maximum zT of 1.12 is obtained at 773 K, fully verifying the advantages of high-pressure treatments in terms of improving transport properties.
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高影响因子
SOLID STATE SCIENCES
·
2025
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IF 3.3
Zhiwei Jiao,Aolong Sun,Xufang Zhang,Mulan Mu,Haoran Dong
Black phosphorus (BP) has attracted much attention for its excellent electrical and optical properties and its potential in field-effect transistors (FETs). In this work, BP doped with oxygen group elements (sulfur, selenium, and tellurium) was successfully synthesized using the chemical vapor transport method (CVT), and their optoelectronic properties were studied systematically. It is confirmed by X-ray diffraction (XRD) that BP crystals doped with the oxygen group elements exhibited high crystalline quality and yield. Changes in the absorption spectra and surface morphology indicated that doped BP demonstrated significantly enhanced environmental stability compared to undoped BP under prolonged air exposure. Among the doped samples, tellurium (Te)-doped BP showed the highest stability, with a degradation rate of only 9.91 % after 10 days. FETs based on doped BP were successfully fabricated, and their electrical performances were thoroughly evaluated. We found that the hole mobility of BP was dramatically improved by doping, and the selenium (Se)-doped BP possessed the highest hole mobility of 1684.24 cm 2 /V·s.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
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IF 18.5
Guojun Zhou,Yilin Mao,Jian Zhang,Qiqiong Ren,Maxim S. Molokeev,Zhiguo Xia,Xian-Ming Zhang
Hybrid metal halides (HMHs) with time-resolved luminescence behavior promise to be a breakthrough in multi-level anti-counterfeiting, but controlling the dynamic switching between phosphorescence and fluorescence is extremely challenging. Herein, an array of 0D HMHs is constructed by screening the π -conjugated ligand with room-temperature phosphorescence (RTP). Compared to the organic chromophore, (ETPP) 2 ZrCl 6 possesses a misaligned stacking and rigid structure, contributing to an improved phosphorescence quantum yield (Φ P = 27.50%) and an extended phosphorescence lifetime ( τ = 0.6234 s), as the intervening of inorganic unit [ZrCl 6 ] 2− suppresses the energy losses caused by nonradiative relaxation and prompts the intersystem crossover (ISC) process. Not only that, the interplay of phosphorescence-fluorescence dual-mode emission can be intelligently controlled by doping the active metal Te 4+ , resulting in a dynamic switching between RTP phosphorescence and self-trapped exciton (STE) fluorescence. DFT calculations reveal the governing origins of RTP-STE from the intermolecular ISC channels and spin-orbit coupling (SOC) coefficients. These precise images into periodic pixelated arrays enable the multi-level anti-counterfeiting and information encryption. This work proposes a fluorescence-phosphorescence co-modulating strategy under the premise of dissecting the structural origins for optimizing RTP phosphorescence, which paves the way for designing high-security-level anti-counterfeiting materials.
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JOURNAL OF FLUORESCENCE
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2024
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IF 2.6
Chen Wanqiu,Chen Ting,Fang Min,Zhu Weiju,Li Cun
In this work, a simple and sensitive N-acetyl-L-cysteine (NAC)-covered CdTe quantum dots (NAC-CdTe QDs) fluorescence probe for continuous detection of Co 2+ and pyrophosphate ions (PPi, P 2 O 7 4− ) was synthesized. The fluorescence of the quantum dots was significantly quenched by Co 2+ through the coordination of Co 2+ and the carboxyl groups on the NAC-CdTe quantum dots. Interestingly, the combination of NAC-CdTe quantum dots with Co 2+ yields a new fluorescence probe of Co 2+ -modified NAC-CdTe QDs (Co 2+ @NAC-CdTe). The addition of PPi restored the fluorescence due to the competition between PPi and carboxyl groups with Co 2+ causing Co 2+ to detach from the surface of Co 2+ @NAC-CdTe quantum dots. Thus, a sensitive and reversible detection of Co 2+ and PPi had been successfully established. The Co 2+ @NAC-CdTe quantum dots fluorescence probe exhibits excellent selectivity and high sensitivity toward PPi detection with low detection limit of 0.28 μM. In addition, the novel fluorescence probe was successfully applied to detect the concentration of PPi in environmental water samples and in-vitro cells imaging.
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