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- 저자 : ZHONGPENG WANG (검색결과 3 건)
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Tong Li,Xuelian Ba,Xiuju Wang,Zhongpeng Wang,Jie Yang,Yu Cui,Liguo Wang 대한환경공학회 2023 Environmental Engineering Research Vol.28 No.1
Forward osmosis (FO) membrane is a promising membrane technique. However, its application in desalination is limited. Thus, we synthesized MIL-53(Fe)@γ-Al₂O₃ via solvent-thermal method to fabricate MIL-53(Fe)@γ-Al₂O₃/cellulose acetate (CA) composite membranes of high desalination performance. MIL-53(Fe)@γ-Al₂O₃ and MIL-53(Fe) particles were studied using XRD, FITR, SEM, N₂ adsorption-desorption isotherms, and AFM. The structural features of MIL-53(Fe)@γ-Al₂O₃/CA membrane and MIL-53(Fe)/CA membrane were analyzed using SEM, AFM and water contact angle. The reverse salt flux and water flux of the MIL-53(Fe)@γ-Al₂O₃/CA membrane reached 1.78 g m<SUP>-2</SUP> h<SUP>-1</SUP> and 37.1 L m<SUP>-2 </SUP>h<SUP>-1</SUP>, respectively, when the deionized water and 1 M NaCl solution were the feed solution and traction solution, respectively. Compared to the MIL-53(Fe)/CA membrane, the MIL-53(Fe)@γ-Al₂O₃/CA membrane demonstrated better perviousness and selectivity properties of the membrane. This study shows a potential advantage of MOF composites as additives for improvement in the desalination performance of forward osmosis membranes.
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Tong Li,Xuelian Ba,Xiuju Wang,Zhongpeng Wang,Jie Yang,Yu Cui,Liguo Wang 대한환경공학회 2023 Environmental Engineering Research Vol.28 No.1
Forward osmosis (FO) membrane is a promising membrane technique. However, its application in desalination is limited. Thus, we synthesized MIL-53(Fe)@γ-Al2O3 via solvent-thermal method to fabricate MIL-53(Fe)@γ-Al2O3/cellulose acetate (CA) composite membranes of high desalination performance. MIL-53(Fe)@γ-Al2O3 and MIL-53(Fe) particles were studied using XRD, FITR, SEM, N2 adsorption-desorption isotherms, and AFM. The structural features of MIL-53(Fe)@γ-Al2O3/CA membrane and MIL-53(Fe)/CA membrane were analyzed using SEM, AFM and water contact angle. The reverse salt flux and water flux of the MIL-53(Fe)@γ-Al2O3/CA membrane reached 1.78 g m−2 h−1 and 37.1 L m−2 h−1, respectively, when the deionized water and 1 M NaCl solution were the feed solution and traction solution, respectively. Compared to the MIL-53(Fe)/CA membrane, the MIL-53(Fe)@γ-Al2O3/CA membrane demonstrated better perviousness and selectivity properties of the membrane. This study shows a potential advantage of MOF composites as additives for improvement in the desalination performance of forward osmosis membranes.
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ZHI JIANG,HAIRONG ZHANG,ZHONGPENG WANG,MINGXIA CHEN,WENFENG SHANGGUAN 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2008 NANO Vol.3 No.4
The simultaneous catalytic removal of NOx and soot over the rare earth element (REE) oxide-based mixture oxides loaded with potassium and transition nanosized metal oxide (designated as M/K/REE oxide) was investigated by using temperature-programmed reaction (TPR). The influence of the type of REE oxides together with the type and amount of transitional metal oxides on the catalytic removal activity was discussed. K/Nd2O3 was found to be the most active oxide among the REE oxides to simultaneous remove the NOx and soot under lean conditions. Chromium oxide was more active than the other transition metal oxides on enhancing the activity of soot oxidation of Nd2O3 loaded with potassium. The optimum loading level of chromium was about 10 wt%, with ignition temperature at about 237°C and the conversion ratio NO → N2 about 24.1%. The Mn-loading on K/Nd2O3 resulted in the biggest conversion efficiency of NO to N2 at about 30.2%. The increasing catalytic reaction of NOx–soot activities is attributed to the formation of complex crystalline phase in the catalyst together with the improving contacting between catalysts and soot.
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