Article
Chemistry, Multidisciplinary
Liang Peng, Huarong Peng, Chin-Te Hung, Dingyi Guo, Linlin Duan, Bing Ma, Liangliang Liu, Wei Li, Dongyuan Zhao
Summary: A programmable shear-induced dynamic assembly approach was developed to synthesize mesoporous carbon nanospheres with tunable core-shell structures and gradient pore systems. The micelle structures in the system can be adjusted by changing shear force and a programmatically proceeded synthesis process results in intelligent assembly of multimodal mesostructures. The resultant carbon nanospheres exhibit high capacity and ultra-long cyclic life for sodium-ion storage, showing potential for innovative applications.
Article
Chemistry, Physical
Yichen Wang, Wei Zhou, Guilin Zeng, Han Chen, Heng Luo, Xiaomeng Fan, Yang Li
Summary: The multi-shell hollow carbon submicrospheres (CSs) were designed to enhance microwave absorption performance, achieved through a combination of hydrothermal method, calcination, and etching process. The multi-shell CSs exhibited improved complex permittivity and tangent loss, with enhanced polarization occurring on the interfaces among different shells. This unique structure of multi-shell hollow CSs resulted in promising high-performance microwave absorbers, as indicated by the reflection loss (RL) reaching -48.5 dB with a wide effective absorption bandwidth of 4.2 GHz in the study.
Article
Chemistry, Physical
Junxiong Xiao, Xiaosi Qi, Lei Wang, Tao Jing, Jing-Liang Yang, Xiu Gong, Yanli Chen, Yunpeng Qu, Qiong Peng, Wei Zhong
Summary: By manipulating the anions, the electronic structure and defects can be effectively controlled, resulting in the regulation of electromagnetic parameters and optimization of electromagnetic wave absorption performances. Hollow carbon spheres@MoSxSe2-x multicomponent nanocomposites were synthesized through a facile method, and the sulfur vacancy concentration was improved by adjusting the x value from 0.2 to 1.0. These nanocomposites exhibited excellent comprehensive electromagnetic wave absorption performances due to the introduced defects and interfacial effects.
Article
Chemistry, Multidisciplinary
Tao Liu, Yinhu Qu, Jiahao Liu, Liuyang Zhang, Bei Cheng, Jiaguo Yu
Summary: The core-shell structured composite of hollow carbon spheres and SiO2 nanosheets decorated with nickel nanoparticles shows improved performance for silicon oxide anode materials in lithium-ion batteries, with enhanced discharge capacity and prolonged cyclic durability.
Article
Chemistry, Physical
Guosheng Wang, Zhaoxiong Yan, Yingjie Ding, Zhihua Xu, Zhikun Li
Summary: The Ni(OH)2@NHCSs electrode material with a hierarchical core-shell structure was obtained using a hard template and chemical-precipitation method, demonstrating excellent specific capacity and energy density. The electrode shows outstanding stability and electrochemical performance in 2M KOH electrolyte, primarily due to its unique hierarchical core-shell structure, high specific surface area, and enhanced electrical conductivity.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Juan Du, Qin-Yan Lin, Jian-Qi Zhang, Sen-Lin Hou, Ai-Bing Chen
Summary: Highly dispersed and uniform small nano-size nickel nanoparticles embedded on core-shell carbon spheres were successfully prepared by the confined-deposition method. The mesoporous silica layer containing surfactant coated on the surface of the polymer sphere provides a confined space and effectively controls the growth of nickel nanoparticles during pyrolysis. The introduction of nickel species has an impact on the structure of the carbon spheres and promotes the deposition of carbon to adjust the spheres from hollow to core-shell and then to solid. With the uniform distribution of Ni nanoparticles, mesoporous structure, N-doping groups, high specified surface areas, and core-shell structure, the obtained catalyst shows exciting ability for CO production through the reduction of CO2, with a maximum CO Faradaic efficiency of 98%, indicating its promising prospect in electro-reduction of CO2.
Article
Nanoscience & Nanotechnology
Juan Wang, Mingwang Pan, Jinfeng Yuan, Gang Liu, Lei Zhu
Summary: A one pot nanoengineering strategy inspired by the automatic transport behavior of water in plants was successfully developed to fabricate spheres-on-sphere (SOS) microspheres with hollow cavities and hierarchical structure. By removing the polystyrene (PS) phase in SOS particles, particles with multiscale hollow structure (SOS-MH) were obtained, reducing the thermal conductivity of composite fibrous membranes and improving moisture resistance.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Xiaobin Xie, Marijn A. van Huis, Alfons van Blaaderen
Summary: A new method for synthesizing Au NP@mSiO(2) yolk-shell particles with tunable size and hollow space is proposed, the structure can be manipulated from core-shell to yolk-shell by varying reaction parameters, and the release of Au nanotriangle cores in yolk-shell particles was demonstrated through liquid-cell transmission electron microscopy.
Article
Chemistry, Physical
Fang Zhang, Shuang Zong, Yue Zhang, Haijun Lv, Xinying Liu, Juan Du, Aibing Chen
Summary: By utilizing mesoporous silica template to prepare N-doped HCS, direct carbon formation can be achieved, simplifying the preparation process. The thickness of the HCS shell, morphology, and surface properties can be adjusted, leading to high electrochemical performance as an active electrode material in supercapacitors.
JOURNAL OF POWER SOURCES
(2021)
Article
Engineering, Environmental
Leila Arjomandi-Behzad, Mina Ranjbar Zandragh, Zeinab Alinejad, Amir Golmohamadi, Hossein Vojoudi
Summary: Efficiently increasing charge separation and active sites is a major challenge for carbon nitride semiconductors. The search for a highly active cocatalyst has attracted attention to address the issues of low charge separation and low specific surface area. A core-shell cocatalyst composed of N-HCS as the core and LDH nanoplates as the shell has been designed to improve the photocatalytic performance. The ternary nanocomposites exhibited superior activity compared to unmodified CN under visible light.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Lianggui Ren, Yiqun Wang, Xin Zhang, Qinchuan He, Guanglei Wu
Summary: In this study, CoFe2O4@mesoporous carbon hollow spheres (MCHS) with a core-shell structure were prepared by introducing CoFe2O4 magnetic particles into hollow mesoporous carbon. The microwave absorption performance of the composites was investigated by adjusting the mass ratio of MCHS and CoFe2O4. The results showed that the porous core-shell structure and magnetic particles contributed to the enhanced microwave absorption.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2023)
Article
Engineering, Chemical
Ali Akbar Isari, Sina Moradi, Seyede Sakine Rezaei, Farshid Ghanbari, Emad Dehghanifard, Babak Kakavandi
Summary: In this study, ZnO nanoparticles were successfully anchored on SiO2@Fe3O4 (S@F) core/shell surfaces to prepare ZnO-SiO2@Fe3O4 (ZS@F) nanocomposite, showing enhanced photocatalytic activity towards malathion degradation under the action of UV-C light and peroxymonosulfate (PMS). Positive-charged holes and HO radicals were identified as the main reactive species. The stability of ZS@F decreased slightly after 5 consecutive cycles of degradation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Applied
Deepika Radhakrishnan, Vaishwik Patel, Shan Mohanan, Kavitha Ramadass, Ajay Karakoti, Ajayan Vinu
Summary: In this study, core-shell mesoporous silica nanomaterials (MSNSs) with high drug loading capacity were successfully synthesized using a unique combination of triple surfactants, and targeted delivery of carboplatin for the treatment of lung cancer was achieved. The optimized MSNS showed excellent surface properties and ordered structure, and could release drugs steadily in vitro with high targeting ability and cytotoxicity. This study provides a new single-step synthesis method for delivering drugs in treating different types of cancers.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Analytical
Peng He, Haitao Fu, Yanlong Gong, Jie Chen, Xiaohong Yang, Dezhi Han, Shixian Xiong, Song Li, Xizhong An
Summary: In order to detect flammable gases and reduce energy consumption, room-temperature gas sensors with high sensitivity, selectivity, and stability have become increasingly popular. In this study, SnO2@ZnS core-shell hollow spheres were prepared using a two-step hydrothermal method. The effects of morphology and composition on gas sensing performance were investigated by adjusting the molar ratio of SnO2 to ZnS. The core-shell composites showed excellent sensing properties to n-butanol, with a sensing response four times higher than that of the pristine SnO2 hollow spheres.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Multidisciplinary
Yang Chen, Si Zhao, Yueyue Yu, Mingdeng Wei, Sanjay Mathur, Zhensheng Hong
Summary: Mesoporous hollow carbon spheres (MHCS) show promising performance in electrochemical energy applications, with high surface area and low oxygen content. MHCS-Zn demonstrates stable performance at different temperatures and high current densities, and when coupled with Na3V2(PO4)3 cathode, the hybrid capacitor exhibits a high energy density.
