SURFACE & COATINGS TECHNOLOGY
·
2023
·
IF 5.4
Xiaoxiang Chen,Zuozhu Yin,Jiale Yan,Mingshan Xue,Yuhua Chen,Chenggang Yang,Yidan Luo
Efficient thermal management materials are an integral part of electronic devices and can quickly contribute to their heat dissipation, thereby greatly improving their reliability, stability and service life . However, the inherent hygroscopicity of the film surface sets obstacles to the reliability and structural stability of electronic devices. To address these issues, a bionic structural design was obtained by spraying a polyurethane/stearic acid/zinc oxide‑iron oxide composite powder (TPU/STA/ZnO@Fe 2 O 3 ) on the surface of graphene composite films . At the same time, the graphene composite film has a high in-plane thermal conductivity (up to 533 W −1 ·m −1 ·K −1 ) and is able to reduce the film surface temperature to room temperature within 5 s due to its highly ordered layered design and strong hydrogen bonding interactions. In addition, the composite film offers a range of advantages such as good hydrophobicity and electrical conductivity . With a water contact angle of up to 159.5 ± 2° and an electrical conductivity of up to 3 × 10 3 S/m in steady state , the results show that the superhydrophobic graphene composite film has good physical, chemical and mechanical stability, as well as self-cleaning capabilities. It also retains good flexibility and reliability under 350 bending cycles. In this regard, the development of graphene composite films with high thermal conductivity , high superhydrophobicity, good electrical conductivity and flexibility is expected to be used as thermally conductive materials , opening up a new path in the field of thermally conductive heat dissipation materials for electronic components.
研究领域:
材料科学
·
电子工程
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2022
·
IF 5.304
Juan Lu,Xiangyu Shan,Qian Wu,Yingjie Zhao,Chao Li,Huiling Li,Shuning Yang,Li Tian
Metal oxides containing iron and zinc (ZnO-Fe 2 O 3 ) combined with ruthenium bipyridine [Ru(bpy) 3 2+ ], graphene oxide (GO) and multi-walled carbon nanotube (MWNTs) were applied in the field of electrochemiluminescence (ECL). And a new solid-state ECL sensor for malathion determination by modifying ZnO-Fe 2 O 3 , Ru(bpy) 3 2+ , GO@MWNTs, Acetylcholinesterase (AchE) and Nafion on the electrode surface. The synthesized ZnO-Fe 2 O 3 and GO@MWNTs with large specific surface area were used as carrier to anchor Ru(bpy) 3 2+ and AchE, respectively. ZnO-Fe 2 O 3 and GO@MWNTs can also be used as accelerators to promote electron transfer of the system. ZnO-Fe 2 O 3 was also involved in the luminescence reaction, which increased the sensitivity of the system together with Ru(bpy) 3 2+ . Taking advantages of the electrocatalysis and electron transport capacity of ZnO-Fe 2 O 3 and GO@MWNTs, the sensor obtained stable and amazing ECL response. The ECL response value decreased after malathion was introduced. In the range of 6.6 × 10 −11 to 6.6 × 10 −7 M, the decrease value (ΔI) was linearly related to the logarithm of malathion concentration, and the detection limit was 2.2 × 10 −11 M. The method was simple and stable, and can be used to determine malathion in vegetable samples.
研究领域:
分析化学
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环境科学
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生物传感技术
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DOI
高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
·
2024
·
IF 4.1
Yue Li,Chen Chen,Yu Sun,Qian Xia,Cuiping Gu,Jiarui Huang
Metal-oxide semiconductor is widely applied in gas sensor for volatile organic compound detection. However, these sensors usually exhibit poor selectivity and inferior sensitivity. Here, ZnO@Fe 2 O 3 microflowers were synthesized using FeOOH microflowers as precursors via a simple solution reaction route, followed by heat treatment. The ZnO@Fe 2 O 3 microflowers were characterized using a series of techniques, and their sensing responses to volatile organic compounds (VOCs) were evaluated in comparison with those of pristine Fe 2 O 3 . The ZnO@Fe 2 O 3 microflower sensor exhibited better responses to several gases, especially acetone, with a response of 74.3 towards 100 ppm acetone, which is 2.85 times higher than that of the Fe 2 O 3 microflower sensor. The sensor also presented high selectivity, reproducibility, and stability in sensing different VOCs. The large specific surface area , heterostructure , favorable hierarchical flower-like nanostructure assembled by the nanosheets , and high porosity of the ZnO@Fe 2 O 3 microflowers contributed to its enhanced gas-sensing responses. Overall, this synthetic strategy for fabricating flower-like ZnO@Fe 2 O 3 nanostructures can be widely applied.
研究领域:
材料科学
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传感器技术
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化学工程
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DOI
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2022
·Vol. 103
·期 3
·890-897
·
IF 2.606
Tian Zhennan,Wu Taiqi,Hu Rong,Yu Junsheng,Cheng Jiang,Li Lu
In this study, a ZnO-Fe 2 O 3 thin film was designed as electron transport layer for organic solar cells (OSCs). The preparation strategy was based on the spin coating of aqueous sol–gel precursor. The result showed that composite ZnO-Fe 2 O 3 -based OSCs had higher power conversion efficiency than pure ZnO-based OSCs. To explain this result, morphology, optical and physical properties of ZnO-Fe 2 O 3 were investigated to analyze the relation between structure of interface layer and performance of OSCs. It was demonstrated that composite ZnO-Fe 2 O 3 layer had denser structure and lower surface roughness than pure ZnO layer. Thus, it showed a good contact with the active layer. Furthermore, 3.3% Fe 2 O 3 could reduce the W F and E g of ZnO, and greatly enhanced electron mobility from the acceptor (IT-4F) phase to the ZnO/ITO electrode. Meanwhile, ZnO-Fe 2 O 3 layer showed a low reflectivity that allowed more photons to entrance the active layer for utilization. Hence, the higher short-circuit current and power conversion efficiency were achieved in ZnO-Fe 2 O 3 -based OSCs.
Graphical abstract
研究领域:
材料科学
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能源技术
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DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2024
·
IF 3.9
Velu Manikandan,Duraisamy Elango,Velu Subash,Palaniyappan Jayanthi,Mysoon M. Al-Ansari,Saurav Dixit,Subhav Singh,Seemaisamy Revathi,Sutikno Sutikno,Kwang Soup Song
The development of effective and cost-efficient photocatalysts is crucial for wastewater treatment. This study aimed to synthesize and evaluate ZnO/Fe 2 O 3 nanocomposites (ZnFe NCs) as novel photocatalysts for the removal of organic contaminates. We synthesized ZnFe NCs using a simple, environmentally friendly microwave-assisted method. Characterization was conducted using HR-TEM, SEM-EDS, XPS, and X-ray diffraction. The photocatalytic performance was evaluated with methylene blue (MB) and orange II (O-II) dyes, showing that ZnFe NCs with H 2 O 2 achieved 98.2 % dye removal under 120 min of sunlight. This performance surpassed that of controls, including ZnO, Fe 2 O 3 , and ZnO/Fe 2 O 3 alone. The study also determined optimal conditions for the photocatalysts, demonstrating enhanced photocatalytic activity. Antibacterial tests showed inhibition zones of 22 mm against Staphylococcus aureus ( S. aureus ) and 20 mm against Escherichia coli ( E. coli ) at 100 mg/mL. ZnFe NCs show dual potential for photocatalytic degradation and antimicrobial activity, ideal for wastewater treatment and microbial control.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2016
·
IF 8.328
Shengjie Xia,Yue Meng,Xiaobo Zhou,Jilong Xue,Guoxiang Pan,Zheming Ni
In this paper, Ti/ZnO–Fe 2 O 3 composite derived from Ti/Schiff base intercalated ZnFe layered double hydroxides was used as thin film electrode in CO 2 photoelectroreduction. The influence of molar ratio of Ti/Fe and calcination temperature, which would affect the composites' physicochemical property and the photoelectrocatalytic performance for CO 2 reduction, were investigated in detail. The characterization results from XRD, SEM, TEM, UV-vis and BET showed that Ti/ZnO–Fe 2 O 3 composite with flower–like crystal from had small particle sizes, narrow band gap and excellent textural properties. The final product of CO 2 photoelectroreduction was methanol and the intermediates were formic acid and formaldehyde. The methanol field reached at 0.773 mmol/cm 2 after 3 h reaction with 0.5 V voltage by Ti/ZnO–Fe 2 O 3 composite with Ti/Fe = 1, calcined at 800 °C. In addition, the CO 2 photoelectroreduction pathway and the reason for highly efficient photoelectrocatalytic activity of the composite were also discussed.
研究领域:
材料化学
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环境催化
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能源化学
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纳米材料科学
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电化学
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DOI
高影响因子
ACS Applied Nano Materials
·
2026
·Vol. 9
·期 33
·15973-15983
·
IF 5.8
Ke Wei,Jiao Gongao,Xi Linqing,Li Guangbin,Zhang Hao,Zhu Liang,Zhang Dongzhi
Carbon disulfide (CS 2 ),
a highly toxic volatile
sulfur-containing industrial gas, poses serious risks to industrial
safety, occupational health, and the environment, creating an urgent
demand for highly sensitive and reliable detection. In this work,
hierarchical ZnO/Fe 2 O 3 nanomaterials were synthesized
via the pyrolysis of a nanosized ZIF-8 precursor for CS 2 detection. The optimized nanoheterostructures exhibited superior
CS 2 -sensing performance compared with their single-component
counterparts, benefiting from efficient interfacial charge modulation
within the n – n nanoheterojunctions
and abundant active sites provided by the hierarchical nanoarchitecture.
The optimized ZnO/Fe 2 O 3 sensor enabled highly
sensitive CS 2 detection with a theoretical LOD of 0.66
ppm. To suppress humidity-induced signal fluctuations, a CSA-optimized
CatBoost model was developed for humidity compensation and achieved
the highest prediction accuracy among the multiple metaheuristic optimization
strategies. This work provides an effective strategy for the rational
design of hierarchical nanoheterostructures with enhanced gas-sensing
performance and demonstrates an intelligent humidity compensation
approach for reliable CS 2 detection under practical operating
conditions.
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ChemSusChem
·
2017
·Vol. 10
·期 13
·2796-2804
·
IF 7.226
Dong-Dong Qin,Cai-Hua He,Yang Li,Antonio C. Trammel,Jing Gu,Jing Chen,Yong Yan,Duo-Liang Shan,Qiu-Hong Wang,Jing-Jing Quan,Chun-Lan Tao,Xiao-Quan Lu
Graphical A passive catalyst? A Fe 2 O 3 shell was grown onto a ZnO core to protect the surface from corrosion and increase the charge-separation efficiency. PH 3 treatment onto the core–shell nanowire creates a Fe 2 PO 5 with dual functionality: a catalyst and passivating overlayer. Zinc oxide is regarded as a promising candidate for application in photoelectrochemical water oxidation due to its higher electron mobility. However, its instability under alkaline conditions limits its application in a practical setting. Herein, we demonstrate an easily achieved wet-chemical route to chemically stabilize ZnO nanowires (NWs) by protecting them with a thin layer Fe 2 O 3 shell. This shell, in which the thickness can be tuned by varying reaction times, forms an intact interface with ZnO NWs, thus protecting ZnO from corrosion in a basic solution. The reverse energetic heterojunction nanowires are subsequently activated by introducing an amorphous iron phosphate, which substantially suppressed surface recombination as a passivation layer and improved photoelectrochemical performance as a potential catalyst. Compared with pure ZnO NWs (0.4 mA cm −2 ), a maximal photocurrent of 1.0 mA cm −2 is achieved with ZnO/Fe 2 O 3 core–shell NWs and 2.3 mA cm −2 was achieved for the PH 3 -treated NWs at 1.23 V versus RHE. The PH 3 low-temperature treatment creates a dual function, passivation and catalyst layer (Fe 2 PO 5 ), examined by X-ray photoelectron spectroscopy, TEM, photoelectrochemical characterization, and impedance measurements. Such a nano-composition design offers great promise to improve the overall performance of the photoanode material.
研究领域:
材料科学
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化学工程
·
能源科学
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Tianxiang Gao,Yan Zhu,Jian Zhao,Zhe Yang,Tao Shen,Mingrong Dong,Jinkun Liu,De-Quan Yang
Hierarchically structured composite hydrogels were fabricated by integrating a poly(vinyl alcohol)–hyaluronic acid (PVA–HA) network with a medical‑grade hydroentangled nonwoven (NW) scaffold, and trace amounts of ZnO/Fe 2 O 3 nanoparticles (ZnO/Fe 2 O 3 NPs, 2500/100 ppm). A simple dip‑pad–freeze–thaw process produced an interpenetrating hydrogel–fiber architecture that substantially reinforced the soft matrix while preserving high water uptake. Transmission electron microscopy revealed ultra‑small Fe 2 O 3 NPs (2–3 nm) homogeneously dispersed within the hydrogel network. These nanoparticles acted as nano‑spacers and hydrophilic centers, respectively, thereby modulating the polymer network density and free volume. Consequently, the equilibrium swelling ratio increased from ∼575% for the pristine PVA–HA hydrogel, to ∼650% for the ZnO/Fe 2 O 3 ‑loaded composite, while an appropriate water vapor transmission rate was maintained. X‑ray photoelectron spectroscopy and electron spin resonance measurements indicated that ZnO/Fe₂O₃ heterojunctions promoted efficient charge separation and enhanced reactive oxygen species (ROS) generation at the hydrogel–bacteria interface. This led to > 99% killing efficiency against both Escherichia coli and Staphylococcus aureus at ultra‑low nanoparticle loadings, without compromising fibroblast viability. Overall, this study demonstrates how nanoscale inorganic inclusions and a fibrous scaffold can be combined to tailor the colloidal network structure, transport properties, and interfacial antibacterial performance of PVA‑based hydrogels, outlining a versatile route towards multifunctional soft materials.
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高影响因子
Materials Today Advances
·
2021
·
IF 7.579
Mei Long,Qianqian Liu,Dongyue Wang,Jie Wang,Yi Zhang,Aidong Tang,Nian Liu,Brian Bui,Wei Chen,Huaming Yang
The wound healing process is divided into four phases of hemostasis, inflammation, proliferation, and remodeling that each wound needs to go through to heal normally. Each phase is crucial to the healing of the wound. Herein, for the first time, we describe an emerging bifunctional hybrid fiber membrane of ZnO–Fe 2 O 3 /kaolinite nanoclay/poly-(3-caprolactone)-gelatin (ZnO–Fe 2 O 3 /Kaol/PG) that concurrently controls bleeding, prevents bacterial colonization, reduces excessive inflammation, and facilitates wound healing for the early emergency self-rescue. Topical treatment with the fiber membrane in bacteria-infected mice models could accelerate wound healing through reducing bacterial growth, and promote cell proliferation and neovascularization, which is attributed to the antibacterial and anti-inflammatory activity of ZnO–Fe 2 O 3 /Kaol. Kaolin can activate the intrinsic coagulation cascade, in addition, it can concentrate on blood platelets, RBCs, and clotting factors by absorbing fluid. Fe 2 O 3 can facilitate RBC aggregation and clotting, while ZnO can mediate the inhibition of the release of pro-inflammatory cytokines and antibacterial effect. The fibrous architecture of PG electrostatically spun fibers can provide an appropriate environment for wound healing. Here, for the first time, we found that ZnO–Fe 2 O 3 /Kaol can control bleeding quickly for wound injury and protect the wound from external bacterial infection and reduces inflammation. The versatility and portability of the as-prepared hybrid fiber membrane make it an effective strategy for hemorrhage control and wound healing.
研究领域:
材料科学
·
医学
·
生物工程
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DOI
高影响因子
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