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- 저자 : Qi Jingyao (검색결과 3 건)
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Zhaoyang Wang,Jingyao Qi,Yan Feng,Ke Li,Xin Li 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.5
Catalytic particle electrodes (CPEs) were developed from steel slag waste, and were used to degrade Rhodamine B (RhB). To improve degradation efficiency, Mn-loaded CPEs with good reproductive performance were constructed through ultrasound impregnation–calcination strategy. The resulting samples were characterized by XRF, SEM, EDS, XPS and XRD. Degradation efficiency of the systems with Mn-loaded CPEs were 93.22% without air supply in 80 min. And degradation efficiency for Mn-loaded CPEs reached 100% with air supply in 50 min. Furthermore, the enhanced mechanism was proposed. The high degradation efficiency could be ascribed to the increase of hydroxyl radicals originated from electro-Fenton.
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Zhaoyang Wang,Xinlin He,Junfeng Li,Jingyao Qi,Chun Zhao,Guang Yang 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.58 No.-
A novel continuous-flow electrochemical reactor was designed for oilfield wastewater advancedtreatment. Magnetic steel slag particles were prepared as particle electrodes in the reactor. The bestpreparation condition of steel slag particle electrodes is obtained via orthogonal and single factorexperiments. The resulting samples were characterized by scanning electron microscope and vibratingsample magnetometer. It was demonstrated that saturation magnetic intensity of the particle was1.6389 emu/g. The process parameters and the total organic carbon (TOC) removal kinetics wereinvestigated. Result showed that the reactor could remove over 85% TOC in 2 h, which was considered tobe effective.
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Mechanical and surface properties of HF50S carbon fibers
Gu Hongxing,Zhang Ming,Zhang Shubin,Qi Jingyao 한국탄소학회 2022 Carbon Letters Vol.32 No.3
To thoroughly analyze the mechanical properties and surface conditions of HF50S carbon fibers, the tensile properties, surface morphology, surface chemical element, surface energy, sizing agent properties, and Naval Ordnance Laboratory (NOL) ring of their composites were characterized. Furthermore, the aforementioned properties were exhaustively compared with those of T1000G carbon fibers. The results showed that the tensile strength, modulus, and elongation of the HF50S carbon fibers were 6638 MPa, 297 GPa, and 2.2%, respectively, thus demonstrating that the mechanical properties of the HF50S carbon fibers were on par with those of the T1000G carbon fibers, in addition, the coefficient of variation (Cv) indices of HF50S carbon fiber were below 3%, indicating good stability. The HF50S carbon fibers have a smooth surface without grooves, which is analogous to that of the T1000G carbon fibers prepared by the typical dry jet–wet spinning process. The main component of the sizing agent of the HF50S carbon fibers is an epoxy resin, which is also used for the preparation of epoxy matrix composites. Because the HF50S carbon fiber surface has greater O and N contents than the T1000G carbon fiber surface, the HF50S carbon fibers have more active functional groups and higher surface activity. The surface energy of the HF50S carbon fibers is 30.13 mJ/m2, which is higher than that of the T1000G carbon fibers (28.42 mJ/m2). Owing to the higher strength and surface activity of the HF50S carbon fibers than those of the T1000G carbon fibers, the strength and strength conversion of NOL ring based on the former are slightly higher than those of that prepared using the latter.
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