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- 저자 : Jingliang Yang (검색결과 4 건)
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Lin Yue,Jianbo Guo,Jingliang Yang,Jing Lian,Xiao Luo,Xiangning Wang,Kaihong Wang,Li Wang 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.3
The electrochemical oxidation of dye wastewater with the cathode modified by quinones has beeninvestigated. Under the optimal conditions, the decolorization efficiency can reach 96.0% after 120 min. The addition of tert-butanol significantly decreased the decolorization efficiency, suggesting theinvolvement of -OH radicals in the decomposition of H2O2. A potential difference may result in a quinoneradical on the cathode which can catalyze the reduction of O2 to H2O2. UV–vis spectrum and GC/MSanalysis revealed that the dye molecule was firstly initiated by the cleavage of –N55N–, and decomposedto aromatic intermediates, further degraded to ring opening products and finally mineralized.
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Enhanced electrochemical oxidation of dye wastewater with Fe2O3 supported catalyst
Lin Yue,Jianbo Guo,Kaihong Wang,Jingliang Yang,Xiao Luo,Jing Lian,Li Wang 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.2
Electrochemical oxidation of Acid Red 3R was investigated in the presence of Fe2O3/γ-Al2O3 as Fenton-like catalyst in the reactor. The results showed that the catalyst had catalytic activity in theelectrochemical process. Under the optimal conditions, the decolorization efficiency reached 77.2% in100 min. UV–vis spectrum and LC–MS analysis revealed that the dye molecule was firstly decomposed toaromatic intermediates, further degraded to ring opening products and finally mineralized. The azo dyedegradation might be attributed to strong oxidant -OH that produced from the synergetic effect ofbetween Fe2O3/γ-Al2O3 catalyst and electrochemical system.
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Lin Yue,Li Wang,Feng Shi,Jianbo Guo,Jingliang Yang,Jing Lian,Xiao Luo 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1
In order to optimize the experimental conditions, the decolorization of Acid Red 3R by electrochemicaloxidation process with catalyst FePMo12-APS-MS4A as packing was performed using response surfacemethodology (RSM). The microstructure and morphology of FePMo12-APS-MS4A were characterizedwith Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electronmicroscopy (SEM) and X-ray fluorescence spectroscopy (XRF). Four control factors were throughlyanalyzed by means of RSM based on Box–Behnken design (BBD). Taking the decolorization efficiency asresponse value, a second order polynomial model was established. The model and analysis stronglyindicated that the cell voltage and airflow caused positive, and the initial pH and inter-electrode distancecaused negative effect on the decolorization efficiency. The interaction between cell voltage and initialpH, initial pH and airflow were also revealed. Under the optimal conditions, the color, COD and TOCremoval efficiency reached 67.3%, 58.4% and 47.9% after 60 min. Liquid chromatography–massspectrometry (LC–MS) analysis revealed that the dye molecule underwent a series of reduction andoxidation steps, including azo bond fracture, desulfonation and denitrogenation. The possiblemechanisms involving in this reaction process were proposed.
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Jing Liang,Sheng Yang,Ye Liu,Xiuyuan Yin,Suiyuan Chen,Changsheng Liu 대한금속·재료학회 2023 METALS AND MATERIALS International Vol.29 No.7
SAF2906 Duplex Stainless Steel (DSS) was fabricated by powder prepasted Laser Melting Deposition(LMD). The formationof ferrite was promoted by increasing the molybdenum content. The volume ratio of ferrite and austenite of LMDed SAF2906DSS with 3 wt% molybdenum content reached 4:6. The effects of 2 wt% and 4 wt% nano TiN addition on the microstructureand comprehensive properties of LMDed SAF2906 DSS were investigated in detail. The results showed that in-situ generatednano (10 nm ~ 100 nm) and submicron (100 nm ~ 1 μm) Ti2Nparticles were uniformly distributed in the LMDed SAF2906DSS matrix, and some nano Ti2Nparticles preferred to be distributed among grain boundaries. The primary and secondarydendrite spacing of austenite of LMDed SAF2906 with 4wt% TiN addition decreased by 48% and 62%, respectively, whilethe austenite content increased by 15%. The wear resistance, strength, elongation and corrosion resistance of the LMDedSAF2906 were gradually improved with the increase of nano TiN addition from 0 to 4 wt%. The average microhardnessfor the sample with 4 wt% nano TiN addition (381 HV0.2)was 1.2 times that of the sample without TiN (326 HV0.2),whilethe wear rate (9.12 × 10–13 m3/Nm) was only 71% that of the sample without TiN (1.28 × 10–12 m3/Nm). The yield strength,tensile strength and elongation of the LMDed SAF2906 with 4wt% TiN addition increased to 801 MPa, 1028 MPa and31.8%, respectively. The self-corrosion potential increased to 0.0216 V, and the self-corrosion current density also reached4.57 × 10–7 A·cm−2 for LMDed SAF2906 with 4wt% TiN addition.
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