Article
Materials Science, Multidisciplinary
Fei Chen, Jiahao Zhao, Hao Wang, Honglin Li, Guanchao Yin, Meirong Cai, Yangwei Wang, Qiang Shen
Summary: The nanoporous structure of oil-impregnated porous copper was prepared via plasma-activated sintering and dealloying, and its effect on oil-retention capacity and tribological properties was investigated.
Article
Nanoscience & Nanotechnology
Chen Ma, Yang Wen, Gege He, Liqun Wang, Lumei Gao, Zhanbo Sun
Summary: This study investigated the refinement effect of Cu and Ce on the microstructures of nanoporous Ag and Ag/CeO2 composite catalysts. The results showed that addition of Cu and Ce improved the catalytic properties of the alloys, with Cu significantly enhancing the catalytic performance of Al-Ag alloy and Ce further improving the catalytic properties. The core-shell structure formed during dealloying limited the diffusion of Ag and prevented the coarsening of Ag ligaments, providing a large specific surface for catalytic reactions.
Article
Chemistry, Physical
Sawsan Ibrahim, Alexandra Dworzak, Daniel Crespo, Frank Uwe Renner, Carsten Dosche, Mehtap Oezaslan
Summary: This study investigates the dealloying processes of Zn80Cu20 alloy ribbons in different acidic and alkaline environments, revealing key factors that control the nanostructure. The presence of chloride ions in acidic media enhances Cu surface mobility, while in alkaline media, the lower surface diffusivity of Cu atoms results in smaller nanostructures.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Physics, Condensed Matter
Xue Liu, Yang Shao, Na Chen, Shao-Fan Zhao, Jing Du, Jin-Feng Li, Guo-Min Le, Ke-Fu Yao
Summary: Metallic glasses are ideal materials for preparing nanostructures by dealloying, with ultrathin Cu&Ag bimetallic nanoporous membranes (NPMs) and nanoporous (Cu&Ag)@Ag core-shell alloy successfully synthesized through the combination of chemical dealloying and ultrasonic vibration. The introduction of oxygen can enable the tuning of the nanostructures into a more robust antibacterial nanoporous (Cu&Ag)@Ag core-shell alloy.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Materials Science, Multidisciplinary
Tao Yin, Fan-Yun Meng, Min Zhang, Ying-Wei Yan
Summary: Nanoporous Ag-Pt bimetallic alloy was fabricated by free dealloying, forming a bi-continuous nanoporous microstructure with asymmetric ligaments and pores. The addition of trace Pt refined the grains in the ligaments and induced the formation of rods with nanopores, observed in SEM and TEM.
Article
Engineering, Environmental
Yuhuan Cui, Anqi Dong, Yanbin Qu, Junyu Zhang, Ming Zhao, Zhili Wang, Qing Jiang
Summary: In this study, the effect of alloying Cu with Mn on NRR performance was investigated using density functional theory, and it was found that the incorporation of Mn into Cu structure can significantly improve NRR performance. The nanoporous CuMn alloy prepared by dealloying method showed high ammonia yield rate and Faradaic efficiency under ambient conditions, outperforming most reported noble metal catalysts.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Metallurgy & Metallurgical Engineering
Qing Xia, Shi-Yao He, Wei Zhang, Qing-Chun Xiang, Ying-Dong Qu, Ying-Lei Ren, Ke-Qiang Qiu
Summary: Dealloyed ribbons with networked nanoporous structure exhibit higher degradation efficiency for pesticide wastewater due to their large specific surface areas and enough active sites. The average pore sizes of the nanoporous structure and the degradation efficiency of the wastewater increase with the increase of Ag addition in the dealloyed ribbons.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Chemistry, Multidisciplinary
Zhenhao Yang, Xiaoyu Chou, HongYin Kan, Zihui Xiao, Yi Ding
Summary: In this study, Cu electrocatalysts with a bicontinuous nanoporous structure and high specific surface area were fabricated for the electrocatalytic hydrogenation of biomass derivatives. The nanoporous Cu exhibited excellent selectivity and high Faraday efficiency, leading to improved purity and yield of the desired product.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Applied
Ericson Escobedo, Jihun Kim, Dasom Oh, Kangwoo Cho, Yoon-Seok Chang
Summary: Commercial Ti-0.15Pd alloy was successfully activated by selective dissolution of Ti using HF treatment for electrochemical dehalogenation of aqueous pollutants. The catalytic cathode surface exhibited a Pd-enriched nano-porous structure, with optimized conditions leading to high dehalogenation efficiency but requiring periodic regeneration to minimize precious metal loss.
Article
Materials Science, Multidisciplinary
Yufei Wang, Shuangle Zhang, Zefeng Wu, Yong Fan, Huaqiang Chen, Qingning Meng, Yang Yan, Zhaoyi Hu, Jing Wang, Engang Fu
Summary: The nanoporous Cu/Ag multilayer composite films were successfully prepared by magnetron sputtering combined with dealloying, with stable nanoporous structure in the dealloying solution. The morphology and structure of the nanoporous multilayer films are mainly dependent on the phase composition of precursors, which can be simply regarded as the superposition of single-layer structures. This work demonstrates that nanoporous multilayers can be well-prepared through the combination of magnetron sputtering and dealloying.
Article
Nanoscience & Nanotechnology
Zhongming Jiang, Jiamin Zhang, Kaizhao Wang, Tianyou Chen, Jiuwei Zhao, Kaijun Wang, Jin Hu
Summary: A mild strategy was developed for fabricating nanoporous silver (np-Ag) through preparation of Ag-Ga alloys followed by electrochemical dealloying. The addition of sodium dodecyl sulfate (SDS) resulted in the minimum pore size. This method provides a new strategy for the industrial production of np-Ag.
Article
Chemistry, Physical
Chaoyang Wang, Shengli Zhu, Yanqin Liang, Zhenduo Cui, Shuilin Wu, Chunling Qin, Shuiyuan Luo, Akihisa Inoue
Summary: A flexible nanoporous Ag@Co(OH)(2) thin film electrode was successfully developed with high volumetric capacitance and excellent supercapacitor performance, maintaining good performance even under bending conditions. This electrode exhibited high energy density at power density, showing potential applications in portable or wearable energy storage devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Ye-Yuan Zhang, Lijie Zou, Ling-Zhi Liu, Hui Xie, Cui-Hong Li, Hai-Jun Jin
Summary: The self-organized anisotropic nanoporous gold (NPG) with unidirectional pore channels has shown significantly improved strength compared to previous studies. The unique structure and mechanical properties make it a promising material for various applications in the future.
Article
Nanoscience & Nanotechnology
Shunsuke Yamada
Summary: A facile and benign dealloying method was used to synthesize nanoporous Cu using a NH4Cl saline solution and Mg as etchant and sacrificial metal. The large difference in the standard electrode potentials of Mg and Cu resulted in a rapid etching process. After 15 min of dealloying, a nanoporous Cu foil with a specific surface area of 24.1 m2/g was obtained. The proposed method is environmentally benign and addresses the issue of hazardous chemical waste produced by conventional electrochemical dealloying methods.
ACS APPLIED NANO MATERIALS
(2023)
Article
Electrochemistry
Saad Intikhab, Maxim Sokol, Varun Natu, Swarnendu Chatterjee, Yawei Li, Michel W. Barsoum, Joshua Snyder
Summary: The development of a nanostructured oxygen evolution reaction (OER) electrocatalyst for low-pH water splitting is demonstrated in this study, utilizing dealloying of mixed RuIr borides to form a high aspect ratio electrocatalytic material with low OER overpotentials and electrolytic stability.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2021)
Article
Chemistry, Physical
Mei Gui Vanessa Wee, Amutha Chinnappan, Runxin Shang, Poh Seng Lee, Seeram Ramakrishna
Summary: Cooling processes, from residences to industries, require a lot of energy and are essential. This study introduces MIL-101(Cr), a new desiccant, to heat exchangers for more efficient cooling. By improving the synthesis method and using a special binder, the MIL-101(Cr)-coated heat exchanger shows improved water uptake capacity and lower regeneration temperature.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Ao Zhen, Guanyu Zhang, Ao Wang, Feng Luo, Jiehua Li, Hong Tan, Zhen Li
Summary: In this study, a solvent-free microemulsion method was used to synthesize waterborne polyurethane (WPU) material with high retention of mechanical properties and satisfactory water absorption rates. The material showed excellent biocompatibility and has broad application potential in the field of biomedicine.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Wensong Ge, Rui Wang, Xiaoyang Zhu, Houchao Zhang, Luanfa Sun, Fei Wang, Hongke Li, Zhenghao Li, Xinyi Du, Huangyu Chen, Fan Zhang, Huifa Shi, Huiqiang Hu, Yongming Xi, Jiankang He, Liang Hu, Hongbo Lan
Summary: This paper reviews the research on the surface tension of eutectic gallium-indium alloys (EGaIn) in the field of stretchable electronics. It covers the principles of oxide layer formation, factors influencing surface tension, and methods for surface modification of liquid metals. The paper also discusses the applications of EGaIn surface modification in different fields and highlights the challenges still faced and the future outlook.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Xiang Song, Lianghao Jia, Zhengen Wei, Tao Xiang, Shaobing Zhou
Summary: This paper provides an overview of the application, preparation, and role of biomimetic structures in solar evaporators with improved evaporation rate and lifetime.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Wei Yuan, Qian Deng, Dong Pan, Xiang An, Canyang Zhao, Wenjun Su, Zhengmin He, Qiang Sun, Ran Ang
Summary: Optimizing the performance of n-type PbTe thermoelectric materials is crucial for practical applications. Dynamic doping has emerged as an effective method to improve the performance of n-type PbTe by optimizing the carrier concentration. This study demonstrates the significance of Mn alloying in enhancing the performance of Ag-doped n-type PbTe by creating a hierarchical structure to suppress thermal transport and improving the Seebeck coefficient.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Xiaoyan Wang, Meiqi Geng, Shengjun Sun, Qian Xiang, Shiyuan Dong, Kai Dong, Yongchao Yao, Yan Wang, Yingchun Yang, Yongsong Luo, Dongdong Zheng, Qian Liu, Jianming Hu, Qian Wu, Xuping Sun, Bo Tang
Summary: This review provides a comprehensive analysis of the progress and challenges in the field of bifunctional electrocatalysts and efficient electrolyzers for seawater splitting. It summarizes recent advancements and proposes future perspectives for highly efficient bifunctional electrocatalysts and electrolyzers.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Jason K. Phong, Christopher B. Cooper, Lukas Michalek, Yangju Lin, Yuya Nishio, Yuran Shi, Huaxin Gong, Julian A. Vigil, Jan Ilavsky, Ivan Kuzmenko, Zhenan Bao
Summary: Dynamic block copolymers (DBCPs) combine the phase separation of traditional block copolymers with the supramolecular self-assembly of periodic dynamic polymers, resulting in the spontaneous self-assembly of high aspect ratio nanofibers with well-ordered PEG and PDMS domains. DBCPs with a periodic block sequence exhibit superior properties compared to those with a random sequence, including delayed onset of terminal flow and higher ionic conductivity values.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Hong Kyu Lee, Yasaswini Oruganti, Jonghyeon Lee, Seunghee Han, Jihan Kim, Dohyun Moon, Min Kim, Dae-Woon Lim, Hoi Ri Moon
Summary: This study reports the moisture-triggered proton-conductivity switching behavior in Zn5FDC MOFs induced by the presence and absence of coordinating solvents, which illustrates the significant role of coordinating solvents in conductivity variation.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Bommaramoni Yadagiri, Sanjay Sandhu, Ashok Kumar Kaliamurthy, Francis Kwaku Asiam, Jongdeok Park, Appiagyei Ewusi Mensah, Jae-Joon Lee
Summary: The molecular engineering of the interface modulator between the perovskite and hole transporting material is crucial for achieving satisfactory performance and stability of perovskite solar cells. In this study, cruciform-shaped dual functional organic materials were employed as surface passivation and hole transporting interfacial layers in perovskite solar cells. The use of these materials significantly improved the power conversion efficiency of the solar cells.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Joaquin Martinez-Ortigosa, Reisel Millan, Jorge Simancas, Manuel Hernandez-Rodriguez, J. Alejandro Vidal-Moya, Jose L. Jorda, Charlotte Martineau-Corcos, Vincent Sarou-Kanian, Mercedes Boronat, Teresa Blasco, Fernando Rey
Summary: This study investigates the synthesis of all-silica RTH zeolites using triisopropyl(methyl)phosphonium as the organic SDA. The results show the formation of two distinct crystalline phases under different synthesis conditions, with fluoride bonding to different silicon sites. It demonstrates the possibility of controlling the placement of fluoride in RTH zeolites through synthesis conditions.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Luyao Zheng, Cong Liu, Wenbiao Zhang, Boxu Gao, Tianlan Yan, Yahong Zhang, Xiaoming Cao, Qingsheng Gao, Yi Tang
Summary: This study successfully improves the efficiency and stability of water splitting by constructing a heterostructured electrocatalyst. The catalyst shows extraordinary performance and could offer an effective approach for the sustainable production of hydrogen.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Carlos A. Campos-Roldan, Raphael Chattot, Frederic Pailloux, Andrea Zitolo, Jacques Roziere, Deborah J. Jones, Sara Cavaliere
Summary: This study systematically evaluated the hydrogen evolution/oxidation reactions on a series of Pt-rare earth nanoalloys in alkaline media, and identified the effect of the lanthanide contraction. The experimental results revealed that the chemical nature of the rare earth modulates the adsorption and mobility of oxygenated-species, enhancing the kinetics of the reactions.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Sara Frank, Mads Folkjaer, Mads L. N. Nielsen, Melissa J. Marks, Henrik S. Jeppesen, Marcel Ceccato, Simon J. L. Billinge, Jacopo Catalano, Nina Lock
Summary: This study investigates the thermal decomposition of ZIF-67 and its correlation with structural evolution and electrocatalytic performance. The researchers used in situ X-ray absorption spectroscopy and total scattering techniques to analyze the process. They found that disorder emerges at lower temperatures and that extending the pyrolysis process can result in materials with superior electrochemical properties.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Zi-Yang Zhang, Hao Tian, Han Jiao, Xin Wang, Lei Bian, Yuan Liu, Nithima Khaorapapong, Yusuke Yamauchi, Zhong-Li Wang
Summary: By constructing Cu-0-Cu+-NH2 composite interfaces with the assistance of SiO2, the electrochemical CO2 reduction reaction (CO2RR) achieves high Faraday efficiency and current density for C2+ production, improving the productivity of carbon cycle.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Ting Wang, Ruijuan Zhang, Pengda Zhai, Mingjie Li, Xinying Liu, Chaoxu Li
Summary: This study successfully exfoliated COFs using a simple electrochemical method, which resulted in improved photocatalytic performance for COFs and enriched the fabrication approach of COF exfoliation.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)