Article
Chemistry, Physical
Wendong Liu, Michael Kappl, Werner Steffen, Hans-Jurgen Butt
Summary: The addition of salt affects the shape of supraparticles, with salt concentration influencing the extent of crystallization. These changes in shape and structure are correlated with salt-dependent single colloid interaction forces. Understanding these interactions is crucial for assembly behavior during the drying process and for preparing complex supraparticles for specific applications.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Nobutomo Nakamura, Koji Matsuura, Akio Ishii, Hirotsugu Ogi
Summary: The formation process of core-shell bimetallic nanoparticles synthesized by sputtering onto a substrate was observed in real time using an acoustic technique. The experiments revealed that restructuring occurred in the Pd-Au alloy system, resulting in the formation of A-shell/B-core nanoparticles, while other systems tended to form B-shell/A-core nanoparticles.
Article
Engineering, Environmental
Yage Xia, Wancheng Gu, Li Shao, Xuan Jiao, Yanzheng Ji, Weilin Deng, Xinquan Yu, Yuxin Zhang, Youfa Zhang
Summary: This study develops an innovative approach to create superamphiphobic composite coatings with flexibility and abrasion tolerance, combining a soft polyurethane resin with rigid diatomite/aluminum hydroxide particles. The obtained core-shell coating demonstrates excellent oil resistance, wear resistance, and flexibility simultaneously.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Chan Zheng, Ziqiao Li, Tiantian Xu, Ling Chen, Fang Fang, Dai Wang, Pinqiang Dai, Qianting Wang, Xinyu Wu, Xiaohui Yan
Summary: Magnetic helical micro/nanoswimmers, inspired by E. coli bacterium, can perform controlled locomotion in various fluids and possess photothermal attributes and high surface areas. They are envisioned for applications in biomedical, environmental purification, etc.
APPLIED MATERIALS TODAY
(2021)
Article
Nanoscience & Nanotechnology
Muzahidul I. Anik, Animesh Pan, Md Golam Jakaria, Samantha A. Meenach, Geoffrey D. Bothun
Summary: Core/shell gold raspberry nanostructures with multiple therapeutic functionalities were synthesized and showed high photothermal conversion efficiency. They inhibited lung cancer cells through intracellular hyperthermia and detected reactive oxygen species using surface-enhanced Raman scattering. These safe-by-design nanostructures have potential for simultaneous therapeutic applications and monitoring therapeutic efficacy.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Bahareh Esteki, Mahmood Masoomi, Mohammad Moosazadeh, ChangKyoo Yoo
Summary: Using machine-learning algorithms and XAI analysis, we developed a model based on a 200-instance data set to predict particle morphology. The study reveals that the morphology of Janus particles prepared by solvent evaporation-induced phase separation is influenced by solvent solubility, polymer cohesive energy difference, and blend composition. Feature values that strongly favor a given morphology can be selected to create Janus or core-shell particles.
Article
Chemistry, Physical
Baohua Yuan, Lingsai Meng, Chaofan Zhang, Lixia Yang, Liangjiu Bai, Huawei Yang, Donglei Wei, Feng Wang, Qingyao Wang, Wenxiang Wang, Hou Chen
Summary: The study presents a hierarchical TiO2 NWAs @ MoS2 core-shell network design that enhances light trapping across the full solar spectrum, benefiting photocatalysis and solar-driven water evaporation. The TiO2 NWAs @ MoS2 achieved high light absorption and evaporation rates under one sun. Additionally, the self-supporting solar absorber demonstrated favorable stability, overcoming challenges in recovering photocatalysts from treated water.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Ruyue Yu, Yanxue Shang, Xue Zhang, Jianting Liu, Fangdou Zhang, Xu Du, Hongman Sun, Jingbin Zeng
Summary: Compared to UV-driven catalysts, the use of sunlight to design efficient visible light catalysts has been less explored. In this study, Fe3O4@ZnO@ZIF-8 three-component core-shell nanoparticles were prepared and their photocatalytic degradation performance was investigated under visible light using Rhodamine B (RhB) as a model contaminant. It was found that Fe3O4@ZnO@ZIF-8 achieved a significant enhancement in the photo-catalytic degradation efficiency with 98% of RhB degraded within 100 min, and a reaction rate constant of 0.0292 min-1. These findings highlight the importance of precise tailoring of core-shell Fe3O4@ZnO@ZIF-8 for achieving desired degradation efficiency of organic pollutants under visible light.
CATALYSIS COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Jeongbin Heo, Jaeseung Lee, Wonmi Shim, Hyeonjin Kim, Syuji Fujii, Jaehoon Lim, Michael Kappl, Hans-Juergen Butt, Sanghyuk Wooh
Summary: The surface-templated evaporation-driven(S-TED) method using liquid-repellent surfaces has gained attention for fabricating supraparticles of defined shape, size, and porosity. However, challenges in mass production have hindered its widespread adoption. To overcome this, the evaporation-driven multiple supraparticle synthesis by drying arrays of self-lubricating colloidal dispersion microdrops is introduced. A hydrophilic micropattern on a hydrophobic substrate is prepared as a template for this method. By employing an Ouzo-like colloidal dispersion, the successful fabrication of supraparticle arrays is achieved.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Yuan Zhang, Baojun Wang, Maohong Fan, Lixia Ling, Riguang Zhang
Summary: In this study, a strategy to improve the catalytic performance of Pt-Sn alloy catalysts in ethane dehydrogenation (EDH) is proposed by engineering the shell surface structure and thickness. Density functional theory (DFT) calculations and kinetic Monte Carlo (kMC) simulations are used to understand the influences of catalyst surface structure, temperature, and reactant partial pressures. The results demonstrate that Pt@Pt3Sn catalysts generally have higher C2H4(g) activity and lower selectivity compared to Pt3Sn@Pt catalysts, due to their unique surface geometrical and electronic properties.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Inorganic & Nuclear
Changhai Liu, Yue Zhang, Ge Yin, Tiantian Shi, Yue Zhang, Zhidong Chen
Summary: In this study, hierarchical structures were constructed by encapsulating porous BiVO4 nanorod arrays with FeOOH and ZnFe layered double hydroxide (ZnFe LDH), aiming to achieve excellent transfer and separation of photogenerated electron-hole pairs. The as-prepared ternary photoanode, BVO/FeOOH/ZnFe LDH, exhibited enhanced visible light absorption, increased carrier density, lower charge transfer resistance, boosted charge injection, bulk separation efficiency, and enhanced PEC performance compared to bare BiVO4. This work provides insights for enhancing the visible light response and boosting PEC performance in BiVO4 heterostructural photoanodes.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Engineering, Chemical
Qiuxiang Wang, Zongxue Yu, Qingmei Chen, Mengyuan Shan, Qingcan Xiang, Qiuyue Tan, Niandan He, Yucheng Liu
Summary: Hollow dodecahedral amorphous CoSx was prepared and then BiOBr nanosheets were grown on its surface to form a CoSx@BiOBr Z-type heterojunction. This structure not only promotes visible light absorption and surface active sites, but also facilitates the separation and migration of photogenerated electrons and holes, resulting in excellent degradation performance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Chunlin Guo, Hao Ding, Meixia Xie, Heqiang Zhang, Xiaoyan Hong, Luyi Sun, Fuchuan Ding
Summary: A super-amphiphobic fluorinated silica sol was prepared through two steps: synthesizing pristine silica particles and grafting perfluorodecyl groups onto the surface. The resulting silica sol showed excellent water-repellency and anti-corrosion properties in an epoxy/F-SiO2 composite coating.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Gagandeep Kaur, Rathindranath Biswas, Krishna Kanta Haldar, Tapasi Sen
Summary: Hydrogen generation through electrocatalytic watersplitting is a promising technology for sustainable and clean energy production. In this study, Ag-coated Au nanostars assembled on DNA origami were designed and their electrocatalytic activity in oxygen evolution reaction (OER) was explored. The results demonstrate that these bimetallic nanostar catalysts exhibit excellent OER activity and high stability, thanks to the highly conductive Ag layer.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
Fei Hu, Ting Li, Tianbiao Sun, Yidan Liu, Dongqi Yu, Rongrong Jia, Liyi Shi, Lei Huang
Summary: This work presents a controllable, green, and facile strategy for preparing Au NRs@MnO2 core/shell nanosheets using the LSPR effect of gold nanorods. MnO2 is obtained through the reduction of KMnO4 with photoelectrons induced by the LSPR effect. Methanol is found to be significant in maintaining the shape of Au nanorods by acting as a hole scavenger, and the OER performance of the resulting Au NRs@MnO2 is notably enhanced under proper irradiation and stable after 1000 cycles.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Jihye Kim, Wonmi Shim, Seong-Min Jo, Sanghyuk Wooh
Summary: The STED method is a surface-templated evaporation driven synthesis technique for assembling colloidal particles into supraparticles, offering advantages in synthesizing supraparticles with various functions, sizes, shapes, compositions, and morphologies.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Jeongbin Heo, Jaeseung Lee, Wonmi Shim, Hyeonjin Kim, Syuji Fujii, Jaehoon Lim, Michael Kappl, Hans-Juergen Butt, Sanghyuk Wooh
Summary: The surface-templated evaporation-driven(S-TED) method using liquid-repellent surfaces has gained attention for fabricating supraparticles of defined shape, size, and porosity. However, challenges in mass production have hindered its widespread adoption. To overcome this, the evaporation-driven multiple supraparticle synthesis by drying arrays of self-lubricating colloidal dispersion microdrops is introduced. A hydrophilic micropattern on a hydrophobic substrate is prepared as a template for this method. By employing an Ouzo-like colloidal dispersion, the successful fabrication of supraparticle arrays is achieved.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Ji Min Lee, Junyong Park, Jongkuk Ko, Yeji Shin, Dongmin Shin, Wonmi Shim, Ju Hyun Lee, Michael Kappl, Junghoon Lee, Sanghyuk Wooh
Summary: To achieve long-term corrosion resistance, we developed an autonomously self-healable hydrophobic coating with superior anti-corrosion properties. The coating, composed of self-healable/fluorinated polymers, allows for scratch-free metal protection through reproducible damage healing. By applying a poly-tetrafluoroethylene (PTFE) thin film on a Schiff-base linkages based polydimethylsiloxane (SC-PDMS) matrix, we successfully suppressed the corrosive reaction of SC-PDMS and achieved effective scratch-free corrosion resistance.
APPLIED SURFACE SCIENCE
(2023)