http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Zhu Wenli,Yang Qiaoling,Du Juan,Yin Pinpin,Yi Jun,Liu Yanmei,Wu Xuemei,Zhang Zhongyi 한국물리학회 2022 Current Applied Physics Vol.39 No.-
A quaternary CuO–CuS–ZnO–ZnS nanocomposite was successfully synthesized via a facile microwave irradiation based on the preprepared ZnS and CuO nanoparticles. CuO–CuS–ZnO–ZnS nanocomposite was a porous photocatalyst, providing excellent adsorption performance. It was sensitive to both ultraviolet and visible light, moreover, the photoelectrochemical measurements confirmed that there was a high separation rate and low recombination rate of photo-generated charge carriers in the nanocomposite, endowing excellent photocatalytic activity in the sunlight. Under the simulated solar light irradiation, the removal efficiency of rhodamine B (RhB) pollutant (30 mg/L) over CuO–CuS–ZnO–ZnS nanocomposite was 33.98 and 2.90 times of pristine CuO and ZnS, respectively. The outstandingt photocatalytic performance was attributed to Z-scheme charge transfer path.
Mengqin Zhang,Lei Guo,Mengyue Zhu,Kai Wang,Renhui Zhang,Zhongyi He,Yuanhua Lin,Senlin Leng,Valentine Chikaodili Anadebe,Xingwen Zheng 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.101 No.-
In this account, pectin components were obtained from akebia trifoliate koiaz peels with the acid extractiontechnology. The chemical constituent of the akebia trifoliate koiaz peels extract (ATKPE) was analyzedand its anti-corrosion performance for mild steel in HCl medium was investigated byelectrochemical methods, surface analysis and theoretical calculations. Experimental results show thatATKPE exhibits excellent corrosion inhibition characteristic, and its inhibition efficiency can be as highas 90% when the concentration of ATKPE is 800 mg/L. Electrochemical measurements show that ATKPEis a mixed-type corrosion inhibitor consisting with Langmuir adsorption model. In addition, SEM, AFMand contact angle observations suggests that the ATKPE may attach firmly to the metal surface by forminga barrier film. XPS and ATR-FTIR results further verify the bonding interaction between the functionalgroups and steel substrate. Meanwhile, quantum chemical calculations and molecular dynamics (MD)simulations were performed to reveal the inhibition mechanism at molecular/atomic level. In brief, ourfindings demonstrate a novel environmentally benign, efficient corrosion inhibitor for steel protection inacidic media.
Multi-scale Modeling for the Stress Analysis of Acrylic Joints in a Hybrid Structure
Yanfeng Zheng,Yaozhi Luo,Xian Xu,Chao Yang,Zhongyi Zhu,Yuekun Heng 한국강구조학회 2019 International Journal of Steel Structures Vol.19 No.4
The central detector at the Jiangmen Underground Neutrino Observatory (JUNO) is a hybrid structure system consisting of an inner acrylic sphere and an outer stainless steel reticulated shell. The stress distributions of the acrylic joints must be accurately simulated to avoid “crazing”. To balance the accuracy and effi ciency of the stress analysis, a multi-scale modeling method using mixed-dimensional coupling is proposed. A framework and a generalized procedure are developed to instruct the modeling and analysis. A multi-scale model consisting of a single refi ned acrylic joint and equipped with simplifi ed joints is proposed and discussed. A comparison of the results using the multi-scale model with a cluster of 3 × 3 refi ned joints reveals that the diff erence is less than 5%, while the ratio of the computation resource cost and the time consumption is approximately only 1/7 and 1/5, respectively. The stress distributions of the acrylic joints in the central detector are obtained using the proposed multi-scale model.