Nanoscale Research Letters
·
2020
·Vol. 15
·期 1
·1-8
·
IF 3.578
Wang Hsiang-Chun,Hong Yuehua,Chen Zhangwei,Lao Changshi,Lu Youming,Yang Zhichao,Zhu Youhua,Liu Xinke
To further improve the performance of all-inkjet-printing ZnO UV photodetector and maintain the advantages of inkjet printing technology, the inkjet printing Ag nanoparticles (NPs) were deposited on the inkjet printing ZnO UV photodetector for the first time. The inkjet printing Ag NPs can passivate the surface defects of ZnO and work as surface plasmons from the characterization of photoluminescence (PL), X-ray photoelectron spectroscopy (XPS), and finite difference time domain method (FDTD) simulation. The normalized detectivity ( D * ) of the Ag NP-modified detector reaches to 1.45 × 10 10 Jones at 0.715 mW incident light power, which is higher than that of 5.72 × 10 9 Jones of the bare ZnO photodetector. The power-law relationship between the photocurrent and the incident light power of the Ag NP-modified ZnO detector is I pc ∝ P 2.34 , which means the photocurrent is highly sensitive to the change of incident light power.
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Xuefan Deng,Xun Liu,Shiyin Xia,Haixu Zhao,Yandong Liu,Qiong Ding,Haibo Zhang
Azobenzenes play an important role in dyes and pigments, food additives and pharmaceuticals. However, selective oxidation of aniline to valuable azobenzene under mild conditions is considerably challenging. Herein, through the reduction of boron clusters loaded with layered double hydroxides (LDHs), a nanometallic photocatalyst ZnTi LDH@ [ closo -B 12 H 12 ]@ 1.17%Ag(ZnTi LDH@B 12 H 12 @Ag) was synthesized. The catalyst catalyzed the synthesis of azobenzene from aniline. The catalyst achieved a high turnover frequency (TOF) of 54.9 h −1 and turnover number (TON) of 439.3. Under the reaction conditions of Na 2 CO 3 , at 40 °C and irradiation at 365 nm with an ultraviolet light source at atmospheric pressure, the yield of azobenzene reached 95.3% after 8 h of reaction and the catalytic activity remained above 80% after six recycles. This study reports a new synthetic catalyst for the selective oxidation of aniline compounds to azobenzene.
✓ 已验证
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2023
·
IF 4.6
Wenjuan Zhang,Yuheng Li,Yaxian Wang,Youliang Wang,Miao Kou,Xiangyue Yang,Qianqian Chu,Kun Zhao
An efficient route is proposed to synthesize a novel three-dimensional (3D) magnetic MXene aerogel (3D MXene/Fe 3 O 4 ). 3D MXene were synthesized by self-assembly of 2D MXene Ti 3 C 2 T x using ethylenediamine (EDA) as crosslinking inducer, then Fe 3 O 4 was in situ coprecipitation onto 3D MXene. 3D MXene/Fe 3 O 4 was applied as an adsorbent for Ag(I) removal from aqueous solutions. 3D MXene/Fe 3 O 4 exhibits a cross-linked 3D porous network with magnetic Fe 3 O 4 nanoparticles uniformly dispersed on its surface and edges. The maximum adsorption capacity of 3D MXene/Fe 3 O 4 for Ag(I) was 2385 mg g −1 . The kinetics and isothermal process during adsorption were described accurately by the pseudo-second-order model and the Freundlich isotherm model, and the adsorption process was driven by chemisorption and multilayer adsorption, where the diffusion mechanism involved surface diffusion and intraparticle diffusion. Furthermore, the 3D MXene/Fe 3 O 4 are recyclable, retaining 71% of the initial removal rate after 5 adsorption/desorption cycles.
✓ 已验证
产品关联
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2023
·
IF 8.6
Jiaoyang Sa,Ningneng Hu,Wouter Heyvaert,Kyle Van Gordon,Hao Li,Le Wang,Sara Bals,Luis M. Liz-Marzán,Weihai Ni
Chiral ligands are considered a required ingredient during the synthesis of dissymmetric plasmonic metal nanocrystals. The mechanism behind the generation of chiral structures involves the formation of high Miller index chiral facets, induced by the adsorption of such chiral ligands. We found, however, that chirality can also evolve spontaneously, without the involvement of any chiral ligands, during the co-deposition of Au and Ag on Au nanorods. When using a specific Au/Ag ratio, phase segregation of the two metals leads to an interface within the obtained AuAg shell, which can be exposed by removing the Ag component via oxidative etching. Although a close-to-racemic mixture of chiral Au nanorods with right- and left-handedness is found in solution, electron tomography analysis evidences left- and right-handed helicities, both at the Au–Ag interface and at the exposed surface of Au NRs after Ag etching. The helicity profile of the NRs indicates dominating inclination angles in the range from 30° to 60°. Single-particle optical characterization also reveals random handedness in the plasmonic response of individual nanorods. We hypothesize that the origin of chirality is related to symmetry breaking during the co-deposition of Au and Ag, through an initial perturbation at a small region on the Au–Ag interface, which eventually leads to chiral segregation throughout the nanocrystal.
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2023
·
IF 4.6
Yinghua Li,Wenyue Yin,Ning Yang,Yuxin Li,Chaoqun Zhu,Lu Liu,Haibo Li,Xi Chen
A kind of easily recyclable and composite photocatalyst based on Ag/AgCl/Bi 2 O 3 /BiFeO 3 (AABB) and modified zeolite (MZ)/activated carbon (AC) were made, and investigated for the degradation of levofloxacin hydrochloride (Lev-HCl) in wastewater. The structures and morphologies of AABB@loading materials were firstly characterized. The results showed that under visible light , the optimal conditions for photodegradation were: mass ratio of MZ to AABB 3:2, AABB@MZ dosage 1–1.2 g/L, initial concentration of Lev-HCl <18 mg/L. Under these conditions, 72.09%∼ Lev-HCl could be degraded within 1.5 h. In addition, AABB@MZ could be easily recovered by gravity settling for 30 min and reused three times with 74.7% recovery rate. Photoluminescence (PL) combined with electron paramagnetic resonance (EPR) showed that photocatalysts mainly produced ·O 2 − and ·OH, which played a major role in the degradation process. Finally, a possible catalytic mechanism for AABB@MZ was suggested.
✓ 已验证
产品关联
DOI
高影响因子
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
·
2023
·Vol. 220
·期 17
·2300261
·
IF 2
Ting Li,Mengzhou Ma,Junhai Wang,Qiang Li,Yunwu Yu,Qianqian Zou,Xinran Li,Xiaoyi Wei,Tingting Yan,Yulan Tang
As an efficient, safe, and environmentally friendly technology, semiconductor photocatalysis has been widely used in the removal of antibiotics from wastewater. In this work, a novel Ag/BiOI/g-C 3 N 4 composite photocatalytic material, BiOI/g-C 3 N 4 , g-C 3 N 4 , and BiOI are prepared as the photocatalysts. The morphologies, chemical properties, and photocatalytic performances of the photocatalysts are characterized using scanning electron microscope, transmission electron microscope, X-ray diffraction, X-ray photoelectron spectroscopy, Fourier-transform infrared spectrometer, ultraviolet–visible spectroscopy (UV–Vis) diffuse reflectance spectra, and photoluminescence spectra. In addition, tetracycline hydrochloride (TC) and ceftiofur sodium aqueous solutions are used to simulate wastewater and the photocatalytic degradation performances of the photocatalysts are investigated and compared under visible light. Compared to g-C 3 N 4 , BiOI, and BiOI/g-C 3 N 4 , the Ag/BiOI/g-C 3 N 4 demonstrates superior performance, increasing the removal rates of TC and ceftiofur sodium to 85.6% and 90.2%, respectively. The photocatalytic mechanism of the Ag/BiOI/g-C 3 N 4 may involve the promotion of the visible light–harvesting ability and inhibition of the recombination of photogenerated electron/hole pairs. Furthermore, the primary active groups in the system are identified as superoxide radicals (·O 2 − ) and hydroxyl radicals (·OH). Herein, some valuable insights into the development of innovative photocatalytic materials are offered for the effective removal of antibiotics from water.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Zhili Li,Jiye Zhang,Pengfei Luo,Jiayi Chen,Bowen Huang,Yuzhe Sun,Jun Luo
Silver chalcogenides demonstrate great potential as flexible thermoelectric materials due to their excellent ductility and tunable electrical and thermal transport properties. In this work, we report that the amorphous/crystalline phase ratio and thermoelectric properties of the Ag2SxTe1–x (x = 0.55–0.75) samples can be modified by altering the S content. The room-temperature power factor of the Ag2S0.55Te0.45 sample is 4.9 μW cm–1 K–2, and a higher power factor can be achieved by decreasing the carrier concentration as predicted by the single parabolic band model. The addition of a small amount of excessive Te into Ag2S0.55Te0.45 (Ag2S0.55Te0.45+y) not only enhances the power factor by decreasing the carrier concentration but also reduces the total thermal conductivity due to decreased electronic thermal conductivity. Owing to the effectively optimized carrier concentration, the thermoelectric power factor and dimensionless figure of merit zT of the sample with y = 0.007 reaches, respectively, 6.2 μW cm–1 K–2 and 0.39, while the excellent plastic deformability is well maintained, demonstrating its promising potential as a flexible thermoelectric material at room temperature.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLAR ENERGY
·
2023
·
IF 6.7
Jie Yu,Dan Zhu,Cong Qi,Wenjie Zhang
In order to collect solar energy into vapor more efficiently, Ag@Fe 3 O 4 nanoparticles with good photothermal properties were prepared in this study, and nanoparticle films were prepared by vacuum filtration of nanofluids to load nanoparticles on filter membrane, which exhibit good evaporation performance. The effects of fluid depth, nanoparticle loading surface density and light intensity on the evaporation performance were investigated. The experiments showed that the evaporation performance is the best at a light intensity of 2 sun, a surface density of 1.0 g/m 2 and a fluid depth of 30 mm (evaporation efficiency of 0.599 and heat efficiency of 0.824). In addition, the surface density is not conducive to the increase of water temperature when it exceeds a certain range. The increase of nanoparticle film surface density is mainly beneficial to evaporation rather than heat storage.
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2023
·
IF 6.1
Tingting Zhang,Gongying Wang,Juan Bao,Chang Liu,Weihua Li,Zhe Kong,Xiuyun Sun,Jiansheng Li,Rui Lu
A crucial issue in analytical science and physiology is the detection of histamine with high sensitivity, specificity and credibility, which served as an important neurotransmitter in biofluids. Despite the high sensitivity of surface-enhanced Raman spectroscopy (SERS) at the level of single molecule, there are still challenges in providing high sensitivity for histamine with a small cross section. For the selective detection of histamine using SERS, a highly sensitive sandwich structure substrate combining Fe 3 O 4 and an Ag-based SERS nanotag was developed. The Fe 3 O 4 @SiO 2 –COOH served as a capture component for enriching histamine. Upon functionalized Ag nanoparticles with glycine (Gly) and (3-Aminopheyonyl) boronic acid (APBA), they were then used to connect with histamine and serve as a SERS nanotag, respectively. A linear relationship between the Raman intensity and the histamine concentration was observed over the range 10 −4 -10 −8 M with a limit of detection of 7.24 × 10 −9 M. This methodology also exhibited good selectivity in the presence of other neurotransmitters. With our new approach, histamine can be detected sensitively and reliably in fish samples, which indicates the potential prospect of an effective method for analyzing histamine in complex specimens.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 2
·878-883
·
IF 3.049
Fangke Zhan,Ran Wang,Juanjuan Yin,Zengsheng Han,Lun Zhang,Tifeng Jiao,Jingxin Zhou,Lexin Zhang,Qiuming Peng
Functional nanocomposites demonstrate excellent comprehensive properties and outstanding characteristics for numerous applications. Magnetic nanocomposites are an important type of composite materials, due to their applications in optics, medicine and catalysis. In this report, a new Fe3O4-loaded silver (Fe3O4–Ag) nanocomposite has been successfully synthesized via a simple solvothermal method and in situ growth of silver nanowires. The silver nanowires were prepared via the reduction of silver vanadate with the addition of uniformly dispersed Fe3O4 nanoparticles. Structural and morphological characterizations of the obtained Fe3O4–Ag nanocomposite were carried out using many characterization methods. As a new composite catalyst, the synthesized magnetic Fe3O4–Ag nanocomposite displayed a high utilization rate of catalytically active sites in catalytic reaction medium and showed good separation and recovery using an external magnetic field. The facile preparation and good catalytic performance of this Fe3O4–Ag nanocomposite material demonstrate its potential applications in catalytic treatment and composite materials.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES PART B-ENGINEERING
·
2019
·
IF 6.864
Ying Huang,Wei Hu,Xinli Wang,Xiaohui Guo,Chao Hao,Yunong Zhao,Xiao Zeng,Ping Liu
A phase transition-controlled force actuator based on graphene/Ag/SR (silicone rubber) has been designed and fabricated. This actuator is based on the principles of phase transition. The actuator with an enclosed cavity, which consisted of a latex film and a graphene/Ag/SR-based electrothermal substrate, and then injecting ethanol into the cavity. The actuator can operate at a low voltage (6 V), and the magnitude of the feedback force can be controlled by applying a square wave signal which the duty cycle is adjustable. The minimal change in feedback force is 0.02 N. Owing to its simple fabrication, easy operation, lightweight (1.4 g), low driving voltage , large deformation and controllable force, manipulator, auto-injector and bionic fish have been made. Summarizing aforementioned experimental results, the manipulator can grip objects of different weights, and the auto-injector can inject a liquid and act as an injector . Furthermore, bionic fish can float and sink in the water. These devices showing that the phase transition actuator is expected to be widely used in soft robots , bionic devices design, and medical field. Also, this category of phase transition actuator could provide ideas for developing flexible actuator.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
·
2019
·
IF 3.973
Lingyan Yang,Liliang Chen,Yi-Chun Chen,Lei Kang,Jiantao Yu,Yuhang Wang,Chengjia Lu,Tsutomu Mashimo,Akira Yoshiasa,Chia-Hua Lin
Immiscible bimetallic Ag–Cu system has been synthesized by the pulsed plasma in liquid method with a graph of one pulse duration. Herein, by combining X-ray power diffraction, K-edge X-ray absorption near edge structure and high-resolution transmission electron microscopy, our results indicate that homogeneously alloyed Ag–Cu nanoparticles (Ag–Cu NAs) have the average diameter about 2.1 nm, composed by 48.5 at% Ag and 51.5 at% Cu with chemical analysis and the estimated lattice parameter was 3.873 Å. The antibacterial property of Ag–Cu NAs was detected against E. coli and S. aureus strains according to the colony formed abilities of bacteria on agar plates covered with the nanoparticles. With very short incubation period, Ag–Cu NAs completely inhibited the E. coli and S. aureus growth at an ultralow concentration. The mechanism of antibacterial property of Ag–Cu NAs was performed by the inductively coupled plasma-atomic emission spectrometry and the plane wave pseudopotential method implemented in the CASTEP package based on the density functional theory. The Ag + dissolution is correlated with antibacterial activity for Ag–Cu NAs-assisted antibacterial treatment. These findings obtained revealed that our Ag–Cu NAs could be served as a containing material of numerous bacteria-free products in order to avoid their bacterial contamination.
✓ 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）