Article
Engineering, Environmental
Yaeun Seo, Min Woo Lee, Hyun Jae Kim, Jin Woo Choung, ChangHo Jung, Chang Hwan Kim, Kwan-Young Lee
Summary: The study showed that doping with appropriate amounts of Ag can increase the oxygen storage capacity of the catalyst and form active Pd-0 species, leading to improved catalytic activity for the oxidation of CO and C3H6.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Zhenhua Zhang, Liping Fan, Weiqi Liao, Feiyue Zhao, Cen Tang, Jing Zhang, Ming Feng, Ji-Qing Lu
Summary: By studying the CO oxidation catalyzed by CeO2-CuO/Cu2O nanocomposites with different CuO structures, it was found that the CuO-CeO2 interfaces in the CeO2-CuO/c-Cu2O (cubes) nanocomposites exhibit higher intrinsic activity, indicating that the active oxygen species originates from CuO. An active 13.2% CeO2-CuO/c-Cu2O(s) catalyst for CO oxidation was achieved on fine Cu2O cubes, possessing a high density of active sites.
JOURNAL OF CATALYSIS
(2022)
Article
Engineering, Environmental
Thanh Son Cam, Shamil Omarovich Omarov, Maria Igorevna Chebanenko, Anastasia Sergeevna Sklyarova, Vladimir Nikolaevich Nevedomskiy, Vadim Igorevich Popkov
Summary: In this study, a series of CuO/CeO2 nanocomposite catalysts were synthesized using the urea-nitrate combustion method, with different CuO loadings. The CuO loading significantly influenced the phase composition, crystallite size, specific surface area, and catalytic performance of the catalysts. Among them, CuO/CeO2-20 catalyst showed high catalytic activity and stability in CO oxidation at low reaction temperature. The synergistic effect of redox pairs and oxygen vacancies contributed to the enhanced catalytic activity of CuO/CeO2-20 catalyst. Further research on doping oxides of other rare-earth and transition metals may further improve the catalytic performance of CuO/CeO2-20 sample.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Qi Wang, Liping Li, Taotao Huang, Junfang Ding, Yantong Lu, Bin Liang, Haozhe Liu, Guangshe Li
Summary: In this study, highly dispersed CuOx species in CeO2-CuO composite were identified as the active centers for the superior catalytic performance of CO preferential oxidation at low temperatures. The concentration of active species can be increased by tuning the dispersion of CeO2 and CuO components, providing new insights for designing advanced composites for low-temperature catalytic applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Yuchuan Ye, Liangjun Gao, Jing Xu, Luhui Wang, Liuye Mo, Xiaodong Zhang
Summary: The catalytic oxidation of ethyl acetate was studied using CuO/CeO2 catalysts prepared by ball milling with different precursors. The catalytic activity was found to be influenced by the specific surface area, particle size of CuO, and proportion of oxygen vacancies.
JOURNAL OF RARE EARTHS
(2023)
Article
Chemistry, Physical
Hu Li, Fei-Xiang Tian, Qi Liu, Yi-Fan Han, Minghui Zhu
Summary: Copper-cerium catalysts are commonly used for the oxidation of CO. This study prepared CuO/CeInOx catalysts and found that the inclusion of In dopants improved the catalyst's activity. The Cu/Ce90In10Ox catalyst showed excellent CO oxidation activity at low temperatures.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Lu Feng, Xiangdong Xing, Yueli Du, Zhenghua Shen, Hui Zhang, Liu Yang, Ming Lv
Summary: In this paper, the effect of KMnO4 modification on the performance of CuCeOx/Fe2O3 catalyst for CO oxidation in industrial flue gas was investigated. Various analytical techniques were employed to reveal the relationship between the structural properties and the catalyst performance. The results showed that KMnO4 modification led to an increase in catalytic activity, with 0.07 mol/L KMnO4 modified CuCeOx/Fe2O3 catalyst exhibiting a CO conversion of 78.2% at 160 degrees C. The modification also resulted in reduced grain size and improved dispersion of active particles, as well as an increase in oxygen-containing functional groups for anchoring metal particles and providing active oxygen species for CO oxidation.
Article
Chemistry, Physical
Jae Hwan Lee, Min June Kim, Eun Jun Lee, Dae-Won Lee, Chang Hwan Kim, Kwan-Young Lee
Summary: The study reveals that modifying the Rh loading can enhance the catalytic properties of CeO2, with the optimal Rh(2)Ce catalyst exhibiting higher reducibility and active oxygen species adsorption capacity. The promotional effect of Rh on the Ag/CeO2 catalyst results in higher catalytic activity, and the interaction between Rh and Ag induces changes in electronic states.
APPLIED SURFACE SCIENCE
(2022)
Article
Energy & Fuels
Yiqing Zeng, Weilong Rong, Shule Zhang, Qin Zhong, Zhaoxiang Zhong
Summary: The introduction of Ti species into CuO/CeO2 catalyst improves the structure and performance, enhances the removal efficiency of NOx and CO, and achieves synergistic control under oxygen-rich conditions.
Article
Chemistry, Inorganic & Nuclear
Weiwei Jie, Yumeng Liu, Wenyong Deng, Qian Liu, Mei Qiu, Shuwu Liu, Jiaqi Hu, Lei Gong
Summary: The one-dimensional CeO2 nanocrystals were successfully synthesized by hydrothermal methods and supported CuO for CO preferential oxidation. The strong interaction between CuO and CeO2 nanocrystals greatly enhances the activity of CuCeO catalysts, with CuCeO-T displaying the best catalytic activity for CO oxidation, reaching 100% CO conversion at 100℃ with 89% O2 selectivity.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Liqun Kang, Bolun Wang, Andreas T. Guntner, Siyuan Xu, Xuhao Wan, Yiyun Liu, Sushila Marlow, Yifei Ren, Diego Gianolio, Chiu C. Tang, Vadim Murzin, Hiroyuki Asakura, Qian He, Shaoliang Guan, Juan J. Velasco-Velez, Sotiris E. Pratsinis, Yuzheng Guo, Feng Ryan Wang
Summary: In this study, a flow of electrons from metallic Cu to surface carbon species was observed, leading to the proposal of an electronic metal-support-carbon interaction model. This provides a comprehensive understanding of mass and electron flow, aiding in the prediction and improvement of catalytic performance in various chemical reactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Bernay Cifuentes, Alejandro Cifuentes, Felipe Bustamante, Lluis Soler, Jordi Llorca, Martha Cobo
Summary: CO removal from syngas was evaluated using structured AuCu/CeO2-SiO2 catalysts in a single catalytic unit. Addition of SiO2 into AuCu/CeO2 increased surface area and reduced cost, but decreased CO conversion. Washcoated AuCu/CeO2-SiO2 catalyst on monolith outperformed powder samples at temperatures above 260°C, showing potential for economic H-2 cleanup processes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Environmental
Ying Feng, Lingyun Dai, Zhiwei Wang, Yue Peng, Erhong Duan, Yuxi Liu, Lin Jing, Xun Wang, Ali Rastegarpanah, Hongxing Dai, Jiguang Deng
Summary: This study investigates the photothermal synergistic catalytic oxidation of toluene over single-atom Pt catalysts. The results show that under simulated solar irradiation, the conversion and CO2 yield of toluene can be significantly increased with the addition of CuO and the generation of reactive oxygen species. The findings highlight the importance of the synergistic effect between photo- and thermocatalysis in developing efficient and low-energy consumption pollutant treatment technologies.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Xuliang Pang, Huaiquan Zhao, Yifei Huang, Youchao Liu, Hongye Bai, Weiqiang Fan, Weidong Shi
Summary: By using an oxidative/reductive activation electrochemical reconstruction method, the intrinsic activity of a catalyst has been significantly enhanced, leading to superior catalytic performance. This method involves the reconstruction of active sites on the catalyst surface and the optimization of its chemical composition and electronic structure, enabling applications in reactions such as hydroxymethylfurfural oxidation and 4-nitrophenol hydrogenation.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Fen Zhao, Yiyu Shi, Leilei Xu, Mindong Chen, Yingying Xue, Cai-E Wu, Jian Qiu, Ge Cheng, Jingxin Xu, Xun Hu
Summary: In this study, Cu2O supported catalysts were prepared and investigated for CO oxidation. The Cu2O/alpha-MnO2 catalyst showed the best catalytic activity. Cu2O-CuO/alpha-MnO2 heterojunction catalysts were further synthesized and the Cu2O-CuO/alpha-MnO2-260 catalyst exhibited the best catalytic performance. Kinetic studies revealed that the apparent activation energy could be greatly reduced due to the excellent redox property and the Cu2O-CuO interface effect.
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)