Journal of Materials Chemistry B
·
2018
·Vol. 6
·期 48
·8148-8162
·
IF 4.776
Qi Cai,Jiating Xu,Dan Yang,Yunlu Dai,Guixin Yang,Chongna Zhong,Shili Gai,Fei He,Piaoping Yang
Designing multifunctional nanoplatforms for the purpose of simultaneous theranostic modalities is critical to address the challenges of cancer therapy. Also, single modalities of phototherapy, including photothermal therapy (PTT) and photodynamic therapy (PDT), cannot meet the requirements of highly efficient treatment. Here, a core–shell–shell nanostructure consisting of a core of upconversion nanoparticles (UCNPs), a layer of mesoporous silica with anchored ZnO nanodots, and an outer layer of polypyrrole (PPy) was developed. In the proposed construct, the emitted ultraviolet (UV) light from the UCNPs core upon 980 nm near-infrared light irradiation can trigger the ZnO nanodots to activate ambient O2 molecules around cancerous tissues to produce toxic reactive oxygen species (ROS), realizing the PDT function. On the other hand, the coated PPy layer can concurrently give rise to an obvious heat effect upon NIR light illumination, thus achieving synergistic PDT and PTT effects; this results in excellent anti-tumor efficiency in vitro and in vivo. Furthermore, in hand with the upconversion luminescence (UCL) and computed tomography (CT) imaging derived from the UCNPs core, dual-mode imaging directed cancer therapy has been realized.
✓ 已验证
DOI
高影响因子
APPLIED CLAY SCIENCE
·
2023
·
IF 5.6
Menghan Yu,Haiyan Wu,Yuhang Meng,Menghan Qu,Huaming Yang
Given the global proliferation of pathogenic microorganisms , there exists a pressing imperative to cultivate efficacious nanomaterials possessing antimicrobial attributes, thereby impeding the transmission of infectious diseases. Clay-based nanoparticles , due to their inherent properties, serve as optimal candidates for the creation of innovative antimicrobial agents, particularly for coating materials . In this study, ZnO nanoparticles were synthesized on talc surfaces and doped with Ag + , yielding an effective antimicrobial composite (Ag-ZnO/talc). The primary aim was to comprehensively evaluate the antimicrobial effectiveness, material compatibility, and biosafety of Ag-ZnO/talc, as well as its potential applications in antibacterial coatings . The finding underscored the remarkable antibacterial properties of Ag-ZnO/talc composites, chiefly through the generation of reactive oxygen species , leading to impairment of the bacterial membrane and leakage of nucleic acid content. A biosafety evaluation indicated minimal cytotoxicity, a low hemolysis rate, and negligible skin tissue reactions, thereby suggesting its suitability for human application. Furthermore, the incorporation of the antimicrobial agent Ag-ZnO/talc did not significantly alter the physicochemical characteristics of the coating, while maintaining an enduring antimicrobial effect for a duration of two months. These findings establish the potential of clay-based antimicrobials for effective and safe application in coatings, facilitating the development of antimicrobial coatings in diverse industrial and public health environments.
✓ 已验证
DOI
高影响因子
Polymers
·
2023
·Vol. 15
·期 8
·1906
·
IF 5
Xinxin Liu,Dengbang Jiang,Yuyue Qin,Zhihong Zhang,Mingwei Yuan
With the increasing environmental pollution caused by disposable masks, it is crucial to develop new degradable filtration materials for medical masks. ZnO-PLLA/PLLA (L-lactide) copolymers prepared from nano ZnO and L-lactide were used to prepare fiber films for air filtration by electrospinning technology. Structural characterization of ZnO-PLLA by H-NMR, XPS, and XRD demonstrated that ZnO was successfully grafted onto PLLA. An L9(43) standard orthogonal array was employed to evaluate the effects of the ZnO-PLLA concentration, ZnO-PLLA/PLLA content, DCM(dichloromethane) to DMF(N,N-dimethylformamide) ratio, and spinning time on the air filtration capacity of ZnO-PLLA/PLLA nanofiber films. It is noteworthy that the introduction of ZnO is important for the enhancement of the quality factor (QF). The optimal group obtained was sample No. 7, where the QF was 0.1403 Pa−1, the particle filtration efficiency (PFE) was 98.3%, the bacteria filtration efficiency (BFE) was 98.42%, and the airflow resistance (Δp) was 29.2 Pa. Therefore, the as-prepared ZnO-PLLA/PLLA film has potential for the development of degradable masks.
✓ 已验证
DOI
PubMed
高影响因子
ACS Sensors
·
2025
·
IF 9.1
Jingxin Qi,Runjia Xu,Yaru Liu,Kaifeng Xue,Lulu Du,Li Lv,Guangliang Cui,Pinhua Zhang
Developing miniaturized portable sensors for detecting NO2 at low temperatures in agricultural environments is crucial for enhancing nitrogen fertilizer utilization efficiency and preventing environmental pollution. This work successfully synthesized ZnO/MWCNT heterostructures using an in situ 2D electrodeposition method under direct current voltage, which demonstrated exceptional gas-sensing performance toward NO2 under both room and lower temperature conditions. The sensor demonstrates a 4-fold enhancement response to 10 ppm of NO2 compared to pristine ZnO sensors and exhibits a response of 98% to 1 ppm of NO2 at room temperature with a detection limit of 30 ppb. Even at −20 °C, it maintains a 5.1% response to 1 ppm of NO2. Notably, the unique nanosheet structure endows the heterostructure with reversible temperature sensing and high-temperature circuit-breaker characteristics, enabling the sensor to have the ability to alarm for temperatures above 50 °C. The incorporation of MWCNTs and the formation of the p–n heterojunction play a synergistic role in enhancing the gas-sensing performance. Moreover, we successfully detected NO2 emissions from nitrogen fertilizers using the ZnO/MWCNT heterostructure sensor, demonstrating its potential for integration with Internet of Things (IoT) technology to enable intelligent agricultural monitoring.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Qiang Hu,Tongqing Chen,Lingling Yan,Junhui Yi,Hongxin Cai,Liang Chen,Lingli Wang
A series of Nd 2 O 3 -decorated ZnO nanosheets were successfully synthesized through a facile hydrothermal approach for n-butanol sensing applications. The results demonstrate that Nd 2 O 3 modification significantly improves the sensing performance. The optimal sensor with 7.5 wt% Nd 2 O 3 loading (denoted as Nd2) achieves a high response of 1503.73 toward 100 ppm n-butanol (68 times higher than that of pure ZnO), along with a rapid recovery time of 3 s and a low detection limit of 500 ppb. Furthermore, the sensor exhibits excellent selectivity against common volatile organic compounds (VOCs) and long-term stability. Comprehensive performance analyses reveal that the performance enhancement originates from the synergistic effect of two fundamental mechanisms: the formation of Nd 2 O 3 /ZnO heterojunctions that effectively modulate the electron-depletion layer, and the increased oxygen vacancy concentration that promotes surface redox kinetics. This work not only highlights the application potential of Nd 2 O 3 /ZnO heterostructures in n-butanol detection, but also provides a feasible material design strategy for developing high-performance gas sensors.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Mingjie Yang,Shendan Zhang,Fengdong Qu,Shu Gong,Chenhao Wang,Lei Qiu,Minghui Yang,Wenlong Cheng
Modification with Au nanoparticles on the surface of semiconductor metal oxide (SMO) is a simple and effective mean to improve the sensing performance of pristine SMO sensor. ZnO nanorods are prepared via a simple precipitation reaction and subsequently modified by catalytic Au nanoparticles with effect on the surface through an ammonia deposition method. The gas response of sensor based on ZnO nanorods modified by Au nanoparticles is improved by 6.6 times to 100 ppm acetone at the optimal operating temperature of 172 °C, which is reduced from 219 °C for pristine ZnO sensor. Meanwhile, the response/recovery time is shortened to 1 s/20 s from 13 s/29 s. In addition, the sensing enhancement mechanism can be attributed to the electronic and chemical sensitization effects of Au nanoparticles.
✓ 已验证
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2021
·
IF 3.927
Benjie Zhu,Guofei Jiang,Yan Lv,Fang Liu,Juan Sun
In oilfield produced water, polyacrylamide (PAM) is a kind of organic polymer , which may gradually degrade to produce a large number of acrylamide (AM) monomer , and cause great damage to the peripheral nervous system of human and animals. In order to improve its removal efficiency, rGO@Fe 3 O 4 /Cu 2 O@ZnO magnetic composites with strong hydrophobicity , high photocatalytic performance and recyclability was prepared. The degradation process of PAM on composites photocatalyst was studied by simulating the sunlight irradiation, and the magnetic recovery performance and photocatalytic stability of composite were explored. Finally, the photocatalytic degradation mechanism of rGO@Fe 3 O 4 /Cu 2 O@ZnO composite was discussed by free radical capture experiment. The results showed that the highest photocatalytic degradation efficiency was 97.3% when the mass ratio of GO@Fe 3 O 4 and Cu 2 O@ZnO was 1:5, the dosage of rGO@Fe 3 O 4 /Cu 2 O@ZnO was 0.6 g L −1 , pH value was 7 and the initial concentration of PAM was 100 g L −1 . After four cycles, the magnetic recovery and degradation efficiency of PAM can still up to 91.3% and 81%, respectively, which both meet the needs of magnetic recovery and photocatalysis . In addition, according to the free radical capture experiment, the main active species was superoxide radical (·O 2− ). This work provides a strategy for designing magnetic composites with hydrophobic and high catalytic for photodegradation of organic pollutants.
✓ 已验证
DOI
高影响因子
OPTICAL MATERIALS
·
2021
·
IF 3.08
Jiaqi Zhang,Jin Li,Xiangyu Liu
The degradation of organic dyes and other pollutants has always been one of the great challenges facing mankind today. So our work designed and improved a novel composite, by using zinc oxide (ZnO) nanoparticles to modify porous carbon nitride (g-C 3 N 4 ), and then load graphene oxide (Go) nanosheets . These prepared binary and ternary composites with different weight ratios were subjected to a series of tests. The results showed that when the weight ratio of g-C 3 N 4 was 40%, the binary composite ZnO-g-C 3 N 4 transferred its absorption edge to lower energy and had the best photocatalytic performance. Moreover, the addition of Go immensely cut down the recombination of photo-generated carriers and enhanced the absorption in the visible light range. The ZnO-g-C 3 N 4 (40%)-Go (15%) displayed 98% degradation efficiency in 100 min, the rate was about 2.23 times than ZnO-g-C 3 N 4 (40%). XRD , XPS, TEM proved the successful hybridization of the composite, and PL explained the causes for the amendment of photocatalytic efficiency. The conduction band and valence band potential of the material were calculated by VB-XPS, and combined with the free radical capture experiment proved the most effective free radical in this experiment and proved the reaction mechanism of the photocatalytic reaction. Through the photocurrent and EIS the results analyzed the high responsivity of the material and the low photogenerated e − /h + recombination rate. In brief, the interface effect and synergistic effect of the ternary heterojunction greatly enhanced the photocatalytic degradation of toxic dyes.
✓ 已验证
DOI
高影响因子
MATERIALS LETTERS
·
2021
·
IF 3.423
Chenguang Yang,Dale Xie,Sheng Wang
Herein, the palygorskite/polyaniline/ZnO (Pal/PANI/ZnO) nanocomposites were synthesized by using facile two-step solution method with palygorskite as a carrier. It was confirmed that the introduction of palygorskite can effectively prevent the free agglomeration of polyaniline shells and ZnO rods. Interestingly, the acquired ternary nanocomposites show excellent microwave absorption properties in multi frequency bands. Specifically, the optimized sample exhibits a minimum reflection loss (RL) value of −57.75 dB at 5.52 GHz in the C band, with an additional RL peak of −47.44 dB at 15.60 GHz at a thickness of merely 1.88 mm in the Ku band. Meanwhile, the effective absorption bandwidth (RL < - 10 dB) reaches 6.56 GHz in the range of 11.44–18.00 GHz at a thickness of 2.08 mm. Therefore, our results could contribute to the design of palygorskite based nanocomposites as the high-absorption and strong-bandwidth microwave absorbers.
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Zhan Shu,Yi Zhang,Jing Ouyang,Huaming Yang
A novel antibacterial nanocomposite, CeO 2 -ZnO/HNTs was prepared by a homogeneous co-precipitation method in ethanol solution. ZnO and CeO 2 nanoparticles with sizes of approximately 8 and 4 nm, respectively, were dispersively precipitated onto the surface of halloysite nanotubes (HNTs). HNTs served as a template for reducing the agglomeration of ZnO nanoparticles and improving the interface reactions between the nanocomposite and bacteria cells. CeO 2 nanoparticles were introduced to suppress the recombination of electron-hole pairs, and narrow the energy gap of ZnO nanoparticles. The synergistic effects of ZnO, CeO 2 nanoparticles and HNTs led to the superior antibacterial activity of the CeO 2 -ZnO/HNTs nanocomposite against gram-negative Escherichia coli.
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
·
2021
·
IF 3.407
Pinhua Zhang,Wenhao Di,Kaifeng Xue,Guangliang Cui
Cu 2 O/ZnO heterostructure ordered nanoarrays were prepared with an in situ electrodeposition method for H 2 S detection in biological samples at room temperature. Based on this new material, a novel sensor was proposed, which exhibited good performances for sensitivity and selectivity for bio-H 2 S detection due to the surface/interface effects and long-range ordered structure. It was confirmed by scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM) that these good performances were mainly attributed to the conversion of Cu 2 O to metallic Cu x S on the surface of the ordered structure. In addition, the sensor had good portability due to its small size. Our results suggest that the Cu 2 O/ZnO heterostructure ordered nanoarrays are promising candidates for high-performance H 2 S sensors applied in disease diagnosis and environmental assessment.
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Zehao Jin,Lili Wang,Kaiyuan Zheng,Qiyue Gao,Wei Feng,Shoukang Hu,Ming Yue,Xiaobiao Shan
The triboelectric nanogenerator (TENG) of natural biomaterials is a new type of energy harvesting device and can be used as a self-powered sensor, which has received extensive research and attention. In this paper, based on the biocompatibility of chitosan and chondroitin sulfate, ZnO-modified chitosan/chondroitin sulfate/ZnO TENG was prepared for research on wearable devices and sustainable power supply devices. This study employs molecular dynamics to compute the interaction energy between chitosan and ZnO molecules. Theoretical calculations have unequivocally substantiated the occurrence of a binding interaction between these two molecular entities. The effect of ZnO on chitosan/chondroitin sulfate morphology was investigated by atomic force microscopy . The chitosan/chondroitin sulfate/ZnO TENG has high flexibility and electrical output performance. It can reach 105 V and 3.3 µA of open-circuit voltage and short-circuit current. Chitosan/chondroitin Sulfate/ZnO TENG successfully converts the mechanical energy of human motion into electrical energy. Strong electrical signals are exhibited when making fists and waving fingers and wrists. The TENG is a self-powered source and lights up 70 blue light-emitting diodes (LEDs). The chitosan/chondroitin sulfate/ZnO TENG has demonstrated its capabilities in energy harvesting and wearable self-powered sensors.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）