Article
Chemistry, Inorganic & Nuclear
Xiao-Hui Wang, Zheng-Min Wang, Qing-Ling Hong, Ze-Nong Zhang, Feng Shi, Dong-Sheng Li, Shu-Ni Li, Yu Chen
Summary: This study successfully synthesized high-quality hollow Cu2O nanocubes, which exhibited high selectivity and activity for electrocatalytic nitrate reduction reaction to ammonia.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Analytical
Wenxiu Gu, Wangwang Zheng, Han Liu, Yuan Zhao
Summary: An electrochemical sensor using electroactive Cu2O nanocubes (NCs) was proposed for the detection of hydrogen sulfide (H2S) at room temperature, showing a limit of detection (LOD) of 230 pM and a detection range of 500 pM-100 μM. The sensor has potential applications due to its simple and inexpensive design.
ANALYTICA CHIMICA ACTA
(2021)
Article
Environmental Sciences
Zhenliang Li, Xuerui Liu, Shuye Li, Enke Feng, Zhiqiang Wu, Zhiming Yang, Xinxian Ma, Xinning Han
Summary: In this study, shape-controlled Cu2O@CuS nanocubes were successfully prepared and used as photocatalyst materials for the degradation of tetracycline. The experimental results showed that the nanocubes exhibited high degradation efficiency under visible light and maintained a high degradation performance even after multiple uses.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Yizhou Zhu, Wanglong Hong, Xiangmei Liu, Lei Tan, Jun Wu, Congyang Mao, Yiming Xiang, Shuilin Wu, Kenneth M. C. Cheung, Kelvin W. K. Yeung
Summary: Sonodynamic therapy (SDT) driven by ultrasound (US) can address deep tissue bacterial infections. A new type of antibacterial sonosensitizer, Au@Cu2O hybrid nanocubes, with an interfacial Schottky junction was designed, which can efficiently produce reactive oxygen species (ROS) to kill bacteria under US stimulation. The study shows promising results in enhancing antibacterial efficacy against Staphylococcus aureus.
Article
Chemistry, Multidisciplinary
Youxing Liu, Hao Tan, Yanan Wei, Minghui Liu, Jiaxin Hong, Wenqiang Gao, Shuoqing Zhao, Shipeng Zhang, Shaojun Guo
Summary: Researchers designed and constructed Cu2O/2D PyTTA-TPA COFs (PyTTA: 1,3,6,8-Tetrakis(4-aminophenyl)pyrene, TPA: p-benzaldehyde) core/shell nanocubes to greatly enhance the photocatalytic hydrogen evolution performance and inhibit photocorrosion.
Article
Chemistry, Multidisciplinary
David Kordus, Jelena Jelic, Mauricio Lopez Luna, Nuria J. Divins, Janis Timoshenko, See Wee Chee, Clara Rettenmaier, Jutta Kroehnert, Stefanie Kuehl, Annette Trunschke, Robert Schloegl, Felix Studt, Beatriz Roldan Cuenya
Summary: The activity and selectivity of ZnO-supported Cu nanoparticles in the synthesis of methanol by CO2 hydrogenation were investigated with different pre-catalyst shapes (cubic vs spherical). The pre-catalyst structure was found to strongly influence its transformation and activity/selectivity trends during the reaction. Cubic Cu particles exhibited higher activity for methanol production, albeit with slightly reduced selectivity compared to similarly sized spherical particles. These findings were supported by density functional theory calculations.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
David Kordus, Jelena Jelic, Mauricio Lopez Luna, Nuria J. Divins, Janis Timoshenko, See Wee Chee, Clara Rettenmaier, Jutta Kroehnert, Stefanie Kuehl, Annette Trunschke, Robert Schloegl, Felix Studt, Beatriz Roldan Cuenya
Summary: The surface composition and catalyst structure of Cu/ZnO-based catalysts play a crucial role in the hydrogenation of CO2 to methanol. The study investigates the effect of pre-catalyst shape (cubic vs spherical) on the activity and selectivity of ZnO-supported Cu nanoparticles during methanol synthesis. Experimental techniques and density functional theory calculations were used to understand the changes in morphology and composition of the shaped pre-catalysts, as well as their subsequent transformation and activity/selectivity trends under reaction conditions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Jun Wang, Suting Liu, Mingyu Tang, Wanlin Fu, Yunpeng Wang, Kuibo Yin, Yunqian Dai
Summary: In this work, a double-confinement strategy is demonstrated to stabilize 2.6 nm-Pt clusters against sintering on electrospun CeO2 nanofibers decorated by CeO2 nanocubes (m-CeO2). The Pt clusters are physically restricted on each facet of CeO2 nanocubes in a nanosized region, allowing them to remain stable at high temperatures without observable size growth or migration. This sinter-resistant catalytic system exhibits enhanced catalytic activity towards hydrogenation and oxidation reactions.
Article
Chemistry, Physical
Xiaohu Ren, Jingting Wang, Hongfeng Yin, Yun Tang, Huiqing Fan, Hudie Yuan, Shanshan Cui, Le Huang
Summary: In this work, hierarchically hollow CoFe2O4/polypyrrole nanocubes with enhanced electromagnetic characteristics for MW absorption were fabricated. The electromagnetic characteristics can be adjusted by regulating the proportion of polypyrrole. The outcomes demonstrate that the as-prepared composites have outstanding MW absorbing ability and are expected to be potential MW absorbers for extensive applications.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Chunjie Ding, Xiaoyu Zhang, Mingxia Liu, Lisheng Zhang, Shuo Yang, Yan Fang
Summary: The morphology of hollow noble metal nanoparticles is crucial for their unique properties and applications. In this study, a galvanic replacement reaction was used to synthesize hollow gold nanocubes, and ascorbic acid and CTAB were introduced to control the shape of the resulting hollow gold nanotetrakaidecahedrons. CTAB selectively adsorbed on specific facets, inhibiting their growth and allowing the {111} facet to grow fastest. Optical absorption spectra further confirmed the formation and growth mechanism. The study demonstrates the ability to fabricate hollow nanoparticles with desired shapes by adjusting experimental conditions.
Article
Materials Science, Multidisciplinary
Qiuxiang Wang, Yongdi Dong, Hongpu Huang, Guifen Du, Peng Zhao, Shuifen Xie
Summary: In this study, porous Cu2O hollow nanospheres (Cu2O-HNSs) were synthesized using a template-free one-pot wet-chemical method. It was found that Cu2O-HNSs with multiple cavities on the shell were formed from porous Cu2O nanospheres through Ostwald ripening, with the concentration of NH2OH·HCl and pH value playing critical roles. Compared to Cu powder, Cu2O-HNSs exhibited enhanced current density and Faraday efficiency of C2 products in the electroreduction of CO2 (CER). This work inspires the synthesis of hollow nanostructures for accelerating the formation of C2 products in CER.
Article
Engineering, Environmental
Maryam Amiri, Seyyed Ebrahim Moosavifard, Saied Saeed Hosseiny Davarani, Saeid Kamari Kaverlavani, Mojtaba Shamsipur
Summary: This study successfully synthesized a hierarchical nanosheet-based MnCoP hollow nanocubes electrode with battery type feature, exhibiting high specific capacity, excellent cycling stability, and high energy and power density.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Xiangfeng Shu, Jun Zhou, Wei Lian, Yu Jiang, Yueqin Wang, Ruiwen Shu, Yin Liu, Jinjin Han, Yu Zhuang
Summary: This study designs and regulates unique monodisperse Fe3O4 hollow spheres through solvothermal method, providing light-weight property required for electromagnetic wave absorbing materials. By adjusting urea contents and reaction time, the morphology and properties of Fe3O4 hollow spheres can be controlled, leading to excellent performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Jiawei Zhang, Dan Wang, Shaoqian Shi, Weiyi Hao, Chen Yuan, Zilin Lu, Fei Teng
Summary: A simple in situ water-bath method is used to load Cu2O hollow nanospheres on TiO2 nanosheets. The H-Cu2O/TiO2-2 sample shows stronger visible light absorption, higher charge separation efficiency, and improved photocatalytic activity compared to TiO2-NS. The findings suggest the potential of the in situ water-bath method for the development of other composite materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Yulia Eka Putri, Nova Andriani, Tio Putra Wendari, Suhana Mohd Said, Diana Vanda Wellia, Refinel, Arif Hidayat, Nofrijon Sofyan
Summary: This paper explores the controllable solvothermal synthesis of well-defined strontium titanate (SrTiO3) nanocubes with tunable morphology using CTAB and TBA. The addition of CTAB and TBA affects the transformation and formation of the SrTiO3 nanocubes. XRD data and refinement analysis show shape-dependent tuning in lattice parameters. CTAB and TBA interact electrostatically with SrTiO3, confirmed by specific absorption peaks in the IR spectrum. HRTEM images reveal the uniform shape, sharp edges, flat faces, and narrow size distribution of the nanocubes. The electrical conductivity in bulk samples with uniform nanocubes is three times higher compared to non-uniform nanocubes.
CERAMICS INTERNATIONAL
(2023)
