TRIBOLOGY INTERNATIONAL
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2024
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IF 6.1
Gongjun Cui,Wenpeng Han,Wuchen Zhang,Junxia Li,Ziming Kou
The aim of this research is to enhance the tribological performance of Stellite 12 coatings at room temperature-1000 °C. To this end, Mo modified Stellite 12 coatings were prepared on the Inconel 718 alloy by laser cladding , and the Mo content was optimized. The effects of Mo on the phases, microstructure and tribological behavior of coatings were investigated. The hardness and tribological performance of coatings were enhanced by adding Mo. There was a threshold content of Mo concerning with tribological performance of Stellite 12 matrix coatings. The 12.0 wt% Mo modified Stellite 12 coating kept more outstanding tribological performance, which was due to the high hardness, in-situ synthesized solid lubricants , friction film and the net structure of complex carbides .
研究领域:
材料科学
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摩擦学
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
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2019
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IF 5.399
Manshun Liu,Jing Wang,Xin Wang,Wenxin Zhu,Xiaolin Yao,Lihong Su,Jing Sun,Tianli Yue,Jianlong Wang
Patulin (PAT) contamination of apple juice leads to a serious food safety issue. Developing an excellent adsorbent to efficiently remove PAT is more desirable. Herein, a cost-effective and efficient adsorbent (GO-SH/diatomite) with abundant active sites was successfully fabricated via surface engineering of diatomite with sulfur-functionalized graphene oxide (GO-SH) nanosheets, which exhibited excellent selective adsorption capacity toward PAT. The adsorption behavior, adsorption mechanism, stability and cytotoxicity were investigated by systematic studies. The adsorption results showed that its maximum adsorption capacity was 10.68 μg/mg. Moreover, attributed to the specific interaction between PAT and thiol group, more than 90% of PAT was removed from apple juice without any juice quality deterioration. Importantly, the risk of food safety issue of apple juice caused by residual GO-SH/diatomite was negligible due to the properties of easy removal and excellent biocompatibility, which guaranteed its potential application in apple juice industry for PAT removal.
研究领域:
食品科学
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生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2024
·
IF 5.8
Qingke Wang,Qin Wang,Yanqiang Wei,Jingyu Chen,Tangyin Cui,Haibo Yan,Jinzhe Duan,Kai Li,Jie Ding
In this study, two types of high-temperature adhesives were prepared using molybdenum-modified phenolic resin (MoPF) as the matrix and TiB 2 or TiB 2 /ZrSi 2 particles as active fillers for bonding Al 2 O 3 ceramic substrates. Shear strength testing, thermo gravimetric analysis (TGA), scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) were employed to investigate the bonding properties, thermal properties, microstructure, compositional evolution, and bonding mechanism of the adhesives. The results demonstrate that MoPF-TiB 2 /ZrSi 2 adhesive exhibits superior bonding properties than MoPF-TiB 2 adhesive. It is noteworthy that the incorporation of ZrSi 2 can mitigate the internal stress induced by rapid volume expansion of the adhesive, and ensuring high density and mechanical strength through the generation of ZrB 2 and ZrTiO 4 , which effectively prevents the sudden decline in bonding performance beyond 1200℃. The mechanical strength of the adhesive can still be maintained at 31.5 MPa after treatment at 1400℃.
研究领域:
材料科学
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粘合技术
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陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
ChemCatChem
·
2025
·
IF 3.9
Qiaofei Zhang,Yuanyuan Hou,Yiming Zhang,Wenlei Xie,Jiangbo Li,Lihong Guo,Hongjuan Bai
Graphical Heterogeneous Mo/ZrP solid acid catalysts with high specific surface area, hierarchically porosity, and strong acidity are developed by intercalating layered ZrP with Mo precursors. Such catalyst exhibits high resistance to water and FFAs, excellent reusability, and good capacity of simultaneous esterification and transesterification. The strong interaction between Mo and ZrP support enhances Mo dispersion and prevents leaching. To develop robust solid acid catalysts for the simultaneous transesterification and esterification of low-value oils into biodiesel, a Mo-modified zirconium phosphate (Mo/ZrP) catalyst was prepared via the intercalation of Mo precursors into layered ZrP using an impregnation method. N 2 adsorption-desorption, NH 3 -TPD, and Py-FTIR analyses indicated that the 40%Mo/ZrP catalyst possesses a high specific surface area, hierarchically porous structures, and strong acidic properties. Such catalyst demonstrates outstanding performance, achieving 97% oil conversion under the optimal reaction conditions. Furthermore, the catalyst shows not only high resistance to free fatty acid (FFA) and water, but good reusability, maintaining oil conversion of >85% after five reuse cycles. This performance meets the requirements for biodiesel production from low-quality oil feedstocks containing moisture and FFA. As evidenced by XRD, UV–vis-DRS, and H 2 -TPR results, the intercalation of Mo species can induce strong interactions between the layered ZrP and Mo, enhancing catalytic stability by preventing the leaching of acidic Mo species. Additionally, the synergistic effect between Brønsted and Lewis acid sites contributes to excellent co-catalysis ability for simultaneous transesterification and esterification in acidic oil conversion.
研究领域:
催化
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可再生能源
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化学工程
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材料科学
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环境科学
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绿色化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2021
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IF 5.316
Shang Gao,Yaqing Zhang,Zhimin Yang,Teng Fei,Sen Liu,Tong Zhang
Carbon nanomaterials are considered as potentially promising sensing materials for fabrication of high-performance electrochemical chloramphenicol (CAP) sensors. However, it is highly required to investigate the structure effect of carbon supports on electrochemical sensing performances. Herein, three typical carbon nanomaterials were selected as carbon supports to deposition of trace MoS 2 , including reduced graphene oxide (rGO), multi-walled carbon nanotubes (MWCNTs) and carbon black (CB), which were subsequently used to construct electrochemical CAP sensors. The combined characterizations of Raman spectroscopy , X-ray photoelectron spectroscopy, scanning electron microscopy and transmission electron microscopy indicate that these MoS 2 modified carbon nanomaterials show the morphology and microstructures similar with carbon supports as used. Electrochemical tests indicate that the sensing performances of these CAP sensors are dependent on the structure of carbon supports. Among all these MoS 2 modified carbon nanomaterials, MoS 2 modified rGO hybrids display large electrochemically active surface area and low interfacial resistance between electrolyte and electrode, resulting in the highest sensitivity of 3.581 μA μM −1 cm −2 . As a result, rGO is regarded as good candidate for fabrication of high-performance CAP sensors, compared to MWCNTs and CB. The present work not only clarifies structure effect of carbon supports on electrochemical sensing performances, but also provides help for the construction of high-performance electrochemical sensors and biosensors based on carbon nanomaterials.
研究领域:
材料科学
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电化学
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纳米技术
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）