Review
Chemistry, Multidisciplinary
Hyunjoong Kim, Tae Yong Yoo, Megalamane S. Bootharaju, Jeong Hyun Kim, Dong Young Chung, Taeghwan Hyeon
Summary: Noble metal-based multimetallic nanoparticles (NMMNs) have multifunctional and synergistic effects for various catalytic applications. Experimental and theoretical studies can tune the performance of nanoparticles. Challenges remain in synthesizing NMMNs with ideal catalytic characteristics.
Article
Chemistry, Physical
Jong-Wook Hong
Summary: This study introduces a preparation method for efficient noble metal-semiconductor hybrid photocatalysts, which exhibit excellent performance in photocatalytic hydrogen production due to the synergistic combination of Rh, TiO2, and CeO2.
Article
Chemistry, Multidisciplinary
Jiayi Chen, Derek Hao, Wei Chen, Yazi Liu, Zongyou Yin, Hsien-Yi Hsu, Bing-Jie Ni, Aixiang Wang, Simon W. Lewis, Guohua Jia
Summary: This article presents emerging engineering strategies for designing colloidal metal-semiconductor nanorod hybrid nanostructures for efficient photocatalytic applications, focusing on the type, size, dimension, and location of metal nanoparticles and semiconductors, co-catalyst, band gap structure, surface ligand, and hole scavenger.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Tsung-Shine Ko, Yen-Lun Chen
Summary: This study proposes a structure in which MoS2 is decorated with Au NPs on Si NSHs for SERS applications. The results show that the structure exhibits low detection limit and high enhancement factor, making it suitable for biomedical detection.
Article
Chemistry, Multidisciplinary
Hongxing Yuan, Xinhao Wan, Jianqi Ye, Tuotuo Ma, Fangyuan Ma, Jie Gao, Wei Gao, Dan Wen
Summary: Here, a general molecular engineering strategy was reported to synthesize molecule-noble metal aerogels (M-NMAs) via 3D assembly of metal nanoparticles induced by metalloporphyrin as cross-linkers. Due to the well synergy of NMAs and porphyrin molecule in creating the facile reaction pathway for ORR catalysis, these M-NMAs demonstrate boosted ORR activity and durability in different electrolytes. The PtPd-based M-NMA delivers superior ORR electrocatalytic performance compared to the commercial Pt/C catalyst.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Medicine, Research & Experimental
Xirui Chen, Lu Ding, Xiaolin Huang, Yonghua Xiong
Summary: This article introduces the application of engineered noble metal nanoparticles in improving immunoassay sensitivity. By modulating the physical parameters of nanoparticles, including size, shape, composition, and external structure, the performance of immunoassay can be improved. Engineered nanoparticles have a wide range of applications in trace analysis.
Article
Nanoscience & Nanotechnology
Alexandros Kontakos, Emmanuel Paspalakis, Spyridon G. Kosionis
Summary: We investigate the linear optical response in a hybrid nanostructure composed of a semiconductor quantum dot located in proximity to a core-shell metal nanoparticle. Using the density matrix approach, we derive analytical expressions for the linear optical susceptibility of the two components of the nanostructure, which are dependent on the geometrical characteristics of the metal nanoshell, on the material of both the dielectric environment and the dielectric core, as well as on the polarization direction of the incident electric field and the distance separating the two nanoparticles. The nanosystem under investigation shows significant gain without population inversion in the semiconductor quantum dot.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2023)
Review
Chemistry, Inorganic & Nuclear
Chengming Lou, Guanglu Lei, Xianghong Liu, Jiayue Xie, Zishuo Li, Wei Zheng, Neeraj Goel, Mahesh Kumar, Jun Zhang
Summary: Formaldehyde sensors are crucial for indoor air quality monitoring and gas leakage detection in industrial areas. The development of high-performance formaldehyde sensors has been greatly facilitated by the research progress in metal oxide semiconductors (MOS) nanomaterials. This review summarizes the recent advances in formaldehyde sensors utilizing MOS nanostructures, emphasizing the structure-property relationships of various MOS types and discussing optimization strategies for sensor performances. The perspectives and challenges in the future development of formaldehyde sensors are also discussed.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Nanoscience & Nanotechnology
Yali Sun, Danni Zhao, Zeying Zhang, Nitika Garg, Bogdan V. Bogdanov, Pavel R. Senyushkin, Meng Su, Dmitry A. Zuev, Sandeep Kumar, Ashok K. Ganguli, Yanlin Song, Pavel Belov
Summary: In this paper, the fabrication process of green printed hybrid TiO2 nanostructures on a gold mirror and the corresponding optical characterization are demonstrated. TiO2 nanoparticles of anatase phase with an average size of 400 nm are synthesized and dispersed in water for printing hybrid TiO2 nanostructures on gold substrates. The scattering spectra of printed hybrid TiO2 nanoparticles with different sizes are investigated experimentally, numerically, and theoretically, and the results are consistent. Moreover, the printed hybrid TiO2 chains exhibit distinct second harmonic generation with a quadratic dependence. It is believed that this printed hybrid TiO2 system shows great potential in biosensing, photocatalysis, and other applications.
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS
(2023)
Article
Chemistry, Physical
Yan Wang, Lorenzo Mino, Francesco Pellegrino, Narcis Homs, Pilar Ramirez de la Piscina
Summary: Photoinduced hydrogen production is a promising green strategy for converting solar energy into chemical energy. This study successfully developed noble metal-free photocatalysts by combining different shape-controlled TiO2 nanoparticles and MoxC co-catalyst. The functional properties and efficiency of the composite materials were carefully assessed, and the engineered MoxC/TiO2 interfaces were found to be particularly active in the photocatalytic hydrogen production.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Review
Chemistry, Analytical
Long Chen, Qiwen Yu, Chenying Pan, Yanhua Song, Hao Dong, Xiaoya Xie, Yi Li, Jun Liu, Di Wang, Xing Chen
Summary: Semiconductor metal oxide (SMO) gas sensors have gained significant attention due to their high sensitivity, fast response time, and excellent selectivity. Nanomaterials (NMs) synthesized by electrospinning offer unique advantages for designing highly sensitive and selective gas sensors. Studies have shown that NMs with different shapes and compositions exhibit high response values, long-term stability, low humidity dependence, fast response/recovery times, and low detection limits for gases.
Article
Chemistry, Multidisciplinary
Siming Ding, Ken Motokura
Summary: Conventional homogeneous catalyst systems using noble metals generate wastes and have high manufacturing costs. Immobilized metal active centers as heterogeneous catalysts in water have emerged as a promising alternative. This review focuses on recent research on immobilized noble metal catalysts for organic reactions in water and highlights the extensive prospects in this field.
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Chao Wang, Cuihua An, Chunling Qin, Hassanien Gomaa, Qibo Deng, Shuai Wu, Ning Hu
Summary: This review summarizes the recent progress in noble metal-based core-shell catalysts for oxygen reduction reactions in proton exchange membrane fuel cells. It highlights the effects of preparation methods, temperature, doping elements, and shell layers on the catalyst performance. The difficulties of mass production and high cost of these catalysts are also discussed. The review proposes research directions for the development of high-performance catalysts with simple synthesis and low cost.
Review
Chemistry, Multidisciplinary
Veikko Linko, Hang Zhang, Nonappa, Mauri A. Kostiainen, Olli Ikkala
Summary: Colloids encompass a wide range of particles, including synthetic nanoparticles and functional biological units. While synthetic colloids have been extensively researched, they often suffer from imperfections in size, shape, and interactions. In contrast, biological colloids offer precision in these aspects. Inspired by biological systems, materials science is exploring ways to achieve structural control and novel functionality in synthetic colloids. This includes guided assemblies of biological motifs, DNA nanotechnology-based assemblies, and atomically precise structures. The goal is to develop stimulus-responsive colloids with complex functions, similar to biological learning. By controlling colloidal size and dispersity, various functionalities can be achieved.
ACCOUNTS OF CHEMICAL RESEARCH
(2022)
Article
Spectroscopy
Kui Lai, Yinghao Xu, Jiahui Chen, Chenjie Gu, Da Chen, Tao Jiang, Tianli Duan, Jun Zhou
Summary: This paper presents a one-step low-cost method to prepare silver decorated porous carbon (Ag NPs/PCN) films for SERS application, achieving excellent SERS performance. The SERS activity is closely related to the spin-coating rate and carbonization temperature, with the most optimal substrate showing the best detection limit and Raman enhancement factor, as well as excellent Raman signal uniformity.
JOURNAL OF RAMAN SPECTROSCOPY
(2022)
Review
Chemistry, Multidisciplinary
Zhihong Zhang, Xiaonan Yang, Kaihui Liu, Rongming Wang
Summary: Two-dimensional (2D) materials with special crystal structure exhibit unique properties, making them promising in fields such as electronics and optoelectronics. To realize their applications, especially in integrated devices, the growth of large-size single crystals is necessary. Epitaxy, specifically the growth of 2D materials with specific orientations on single-crystal substrates, is the most feasible way to achieve this. The lattice symmetry relation and interaction between 2D materials and the substrate determine the epitaxy behaviors, which are systematically discussed in this article. Opportunities and challenges for the epitaxy of 2D single crystals in the future are summarized.
Article
Chemistry, Multidisciplinary
Wenrui Li, Haofei Zhao, Hao Li, Rongming Wang
Summary: Efficient and low-cost Fe-doped NiS nanosheets grown on conductive carbon fiber paper were fabricated through a two-step hydrothermal process for enhanced oxygen evolution reaction (OER) performance. The Fe-NiS@CFP catalyst exhibited superior electrocatalytic activity with low internal and interface charge-transfer resistance, leading to an overpotential of 275 mV at 100 mA cm(-2) and stable performance for at least 50 hours as an OER electrode. This work provides insights into the design and fabrication of non-noble metal sulfide electrocatalysts.
NANOSCALE ADVANCES
(2022)
Article
Chemistry, Physical
Aixian Shan, Xueai Teng, Yu Zhang, Pengfei Zhang, Yingying Xu, Chengrang Liu, Hao Li, Huanyu Ye, Rongming Wang
Summary: This study synthesizes Pt nanoparticles decorated on MoS2 nanosheets and demonstrates their enhanced electrocatalytic activity and stability through electronic structure modulation, resulting in lower overpotential and smaller Tafel slope.
Article
Chemistry, Multidisciplinary
Xiaofang Zhang, Dongliang Tian, Feng Yang, Haofei Zhao, Woon-Ming Lau, Rongming Wang
Summary: This study demonstrates a strategy for the controllable synthesis of graphite shells (GSs) and carbon nanotubes (CNTs) by regulating the interface interaction via in situ pyrolysis. The results show that the growth modes and catalyst nanoparticle size of carbon nanostructures vary with temperature.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Jiatian Fu, Liyun Zhao, Liang Zhou, Kang Wu, Jiaxing Du, Xiangzhuo Wang, Jiepeng Song, Lijie Zhu, Fan Zhou, Yahuan Huan, Lihong Bao, Rongming Wang, Qing Zhang, Yanfeng Zhang
Summary: This study reports the large-area uniform growth of monolayer, bilayer, and few-layer 1T-SnSe2 single-crystal flakes on mica substrates via chemical vapor deposition. The feeding amount of Sn precursor and flow rate of hydrogen carrier were found to be crucial parameters for the thickness-controlled growth. Furthermore, the study discovered that 1T-SnSe2 exhibits clear second harmonic generation, with its intensity showing a linear dependence on thickness.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Tianyu Xia, Kai Zhao, Youqi Zhu, Xiaoyan Bai, Han Gao, Ziyu Wang, Yue Gong, Menglin Feng, Shunfang Li, Qiang Zheng, Shouguo Wang, Rongming Wang, Haizhong Guo
Summary: Mixed-dimensional Pt-Ni alloy polyhedral nanochains were fabricated to address the unbalanced relationship between activity and stability in Pt nanocatalysts. These nanochains exhibited significantly enhanced mass activity for methanol oxidation reaction and improved stability against CO poisoning. Additionally, they achieved a higher half-wave potential for oxygen reduction reaction.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Haofei Zhao, Yuchen Zhu, Huanyu Ye, Yang He, Hao Li, Yifei Sun, Feng Yang, Rongming Wang
Summary: Nanocrystals play a crucial role in material sciences and industry. Designing nanocrystals with desired structures and properties is a major challenge that requires a deep understanding of atomic-scale dynamics. In situ transmission electron microscopy (TEM), especially environmental TEM, has provided valuable insights into nanocrystals. This comprehensive review highlights the progress in the understanding of nanocrystal dynamics, including nucleation and growth, structure evolution, and dynamics in reaction conditions.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Yange Wang, Yechen Wang, Jing Bai, Sibin Duan, Rongming Wang, Woon-Ming Lau
Summary: In this study, a hierarchical TA-Fe@Ni-WOx structure was synthesized by interfacial coordination assembly, which showed enhanced catalytic activity for the oxygen evolution reaction. The introduction of Fe ion-chelated tannic acid improved the electronic structure of Ni-WOx, resulting in low over-potentials and excellent OER performance in alkaline electrolytes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Yadi Cao, Yinghui Sun, Huanhuan Yang, Liang Zhou, Qianming Huang, Jiajie Qi, Pengfei Guan, Kaihui Liu, Rongming Wang
Summary: In this study, the directional migration and structural evolution of Au nanoparticles on anisotropic ReS2 were investigated using aberration-corrected transmission electron microscopy. It was found that Au nanoparticles with diameters below 3 nm preferentially migrate along the b-axis direction. Density functional theory calculations revealed that the lower diffusion energy barrier enables the directional migration. The coalescence kinetics of Au nanoparticles were quantitatively described using the relationship r(2) = Kt. This work provides an atomic-resolved dynamic analysis method for studying the interfacial structural evolution of metal/2D materials, which is crucial for understanding the stability of nanodevices based on mixed-dimensional nanomaterials.
Article
Chemistry, Physical
Haofei Zhao, Ziwen Zhou, Xuenan Feng, Chao Liu, Hui Wu, Wei Zhou, Hailong Wang
Summary: This study establishes a hydrogen-bonded organic framework that can be used for red light photocatalysis. By introducing ethylamino groups to the core molecule, the material is able to absorb red light at 619 nm and generate singlet oxygen, thereby enhancing the oxidation rate of sulfides.
Article
Materials Science, Multidisciplinary
Yu Zhang, Xue-Ai Teng, Ze-Qun Ma, Rong-Ming Wang, Woon-Ming Lau, Ai-Xian Shan
Summary: A novel synthesis strategy for FeOOH hollow tubes with one-dimensional and hollow features was proposed and successfully implemented. The FeOOH scaly hollow tubes exhibited outstanding catalytic activity, low Tafel slope, and robust stability as oxygen evolution reaction catalysts. This work enhances the feasibility to broaden the design ideas of transition metal-based catalysts.
Article
Chemistry, Multidisciplinary
Xiaoyan Bai, Tianqi Cao, Tianyu Xia, Chenxiao Wu, Menglin Feng, Xinru Li, Ziqing Mei, Han Gao, Dongyu Huo, Xiaoyan Ren, Shunfang Li, Haizhong Guo, Rongming Wang
Summary: Constructing a heterogeneous interface using different components is an effective way to achieve the bifunctionality of nanocatalysts, and synergistic interactions between multiple interfaces can optimize the performance of single-interface nanocatalysts. A multiple-interfaced sandwich-like nanostructure MoS2/NiSe2/reduced graphene oxide (rGO) is prepared, showing excellent catalytic performance in water splitting reactions. Assembled into a modified two-electrode system, the nanostructures exhibit an overpotential even exceeding that of noble metal nanocatalysts.
Article
Chemistry, Physical
Xiaodan Wang, Yao Lu, Rui Li, Dongsheng Ren, Xiaoyue Wang, Chunxue Liu, Rongming Wang, Xiang Hu, Zhenhai Wen, Xiangming He
Summary: This study reports a superlattice Zn3V2O7-C as a conversion-type cathode material for AZIBs, which exhibits high capacity and long-term stability.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yuan Ma, Yongqing Chen, Tao Guo, Hong-Hui Wu, Rongming Wang, Yang He, Luning Wang, Lijie Qiao
Summary: In this study, the atomic shuffling mechanism during twinning nucleation in rhenium nanocrystals was analyzed using in situ high-resolution transmission electron microscopy. It was found that the double-layered prismatic planes initially shuffle into single-layered BCT planes, and subsequently adjacent BCT planes shuffle in opposite directions to form the basal planes of the twin embryo. Molecular dynamic simulations further confirmed this shuffling mechanism. These findings provide direct evidence of shuffle-dominated twinning nucleation with atomic details, which may contribute to better control of this critical twinning mode in HCP metals.
Article
Chemistry, Multidisciplinary
Shiyu Zhu, Yun Liu, Yue Gong, Yuting Sun, Kang Chen, Yuan Liu, Weidi Liu, Tianyu Xia, Qiang Zheng, Han Gao, Haizhong Guo, Rongming Wang
Summary: PtCo@PtIr nanoparticles with a quasi-octahedral PtCo nanocrystal core and an ultrathin PtIr atomic layer shell are successfully designed and fabricated. With their unique geometric and core-shell features, the PtCo@PtIr nanoparticles exhibit significantly higher mass and specific activities as an ORR catalyst compared to a commercial Pt/C catalyst, and show extraordinary durability. Furthermore, when evaluated with the ORR-OER dual reaction, the PtCo@PtIr nanoparticles demonstrate a small ORR-OER overpotential gap, indicating their great potential as a bifunctional electrocatalyst for fuel cell applications.