Article
Chemistry, Multidisciplinary
Zixin Wang, Hui Wang
Summary: This study synthesized Au@C/Pt core@shell/satellite supra-nanostructures and demonstrated the modulation of catalytic reaction kinetics through plasmonic antenna effects and photothermal transduction. The interplay between plasmonic and catalytic effects in these antenna-reactor nanohybrids was investigated using a specific model reaction.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
J. Bonet-Aleta, J. L. Hueso, L. Sanchez-Uriel, M. Encinas-Gimenez, S. Irusta, P. Martin-Duque, G. Martinez, J. Santamaria
Summary: In this study, inorganic nanocatalysts were used to target and deplete glucose and glutathione, key biomolecules for tumor cells, and generate reactive oxidative species, representing a novel and promising strategy against cancer. A ternary assembled nanohybrid based on Au and CuFe2O4 was developed to simultaneously deplete glucose and glutathione and generate reactive oxidative species. This hybrid heterostructure maintained the glucose oxidase-like activity of Au and prevented its deactivation in the presence of glutathione, presenting a promising alternative for potential anticancer therapy within the tumor microenvironment.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Multidisciplinary Sciences
Ruben Lopez-Aladid, Laia Fernandez-Barat, Victoria Alcaraz-Serrano, Leticia Bueno-Freire, Nil Vazquez, Roque Pastor-Ibanez, Andrea Palomeque, Patricia Oscanoa, Antoni Torres
Summary: This study compared the resolving powers of different 16S rRNA hypervariable regions in microbiome analysis of sputum samples, and found that the V1-V2 region had the highest accuracy in classifying respiratory bacteria in sputum. Therefore, the V1-V2 hypervariable regions can be used for taxonomic identification in sputum before the availability of third generation full-length 16S rRNA sequencing platforms.
SCIENTIFIC REPORTS
(2023)
Article
Mechanics
Qingying Feng, Ying Zhang, Hao Feng, Dong Liu, Qiang Li
Summary: Plasmon-mediated photocatalytic water splitting can efficiently harvest solar energy. Experimental studies have shown the benefits of hot spots in plasmonic nanoclusters for photocatalysis, but the interactions between different nanoclusters are difficult to observe experimentally. Theoretical studies have used a water molecule adsorbed on a single plasmonic nanocluster as a model. In this study, a representative model with a water molecule placed between two gold nanoclusters was computationally investigated. The results show that the plasmonic configurations can tune the hot electron transfer mode and enhance the water splitting rate. The distance between the water molecule and the gold nanoclusters also affects the charge transfer chain and the accumulation of hot electrons on the water molecule, leading to unexpected results.
Article
Chemistry, Multidisciplinary
Qingtao Li, Qi Cai, Xiaoyun Li, Enshan Han, Yanmin Sun, Yanfei Lu, Zhe Cai, Haibin Yu
Summary: The effects of different palladium salts on the performance of Pd nanocatalysts for VOC oxidation were investigated. Pd(NO3)(2) was found to have the highest metal dispersion and the most PdO particles, making it the best performing catalyst. The presence of chloride species in the precursors promoted Pd aggregation and poisoned the catalysts. Pd(NO3)(2) was determined to be more suitable as a precursor for VOC oxidation catalysts compared to PdCl2 and Pd(NH3)(4)Cl-2.
Article
Biotechnology & Applied Microbiology
Poulami Mukherjee, Krishnamoorthy Sathiyan, Tomer Zidki, Mallikarjuna N. Nadagouda, Virender K. Sharma
Summary: This mini-review provides a mechanistic understanding of using UV-sulfite and UV-iodide systems to degrade PFAS. The potential advantages of UV-ARPs and the challenges in scaling up the technology for real-time PFAS degradation are discussed. The importance of removing dissolved organic matter and creating anoxic conditions in water samples for the effectiveness of UV-ARPs is emphasized.
CURRENT OPINION IN CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Applied
Xiang Li, Yingxin Luo, Shuowen Wu, Haoyu Lian, Xiaoqing Deng
Summary: In this study, Au-Fe/TiO2 nanocatalysts were prepared using a modified incipient wetness impregnation method, and the visible-light activities of the samples activated by calcination, H2/Ar plasma, and O2 plasma were compared. The results showed that Au-Fe/TiO2 activated by O2 plasma exhibited the most exceptional performance with a CO conversion of 90%. The O2 plasma treatment restructured nano Au and Fe on the TiO2 support into Au-Fe alloy, preventing the increase of nano Au particle size. The Au-Fe alloy nanoparticles on TiO2 had a narrow size distribution and were approximately 4 nm in size. Surface oxygen species and CO adsorption were observed on the Au-Fe alloy, improving its activity and stability in CO oxidation. A reaction mechanism for CO oxidation on Au-Fe/TiO2 activated by O2 plasma was also proposed. The study demonstrated that O2 plasma treatment is an effective approach to produce efficient Au-Fe plasmonic nanocatalysts.
Review
Chemistry, Multidisciplinary
Reza Taheri-Ledari, Ali Maleki
Summary: Recent advances in catalytic processes using magnetic heterogeneous nanocatalysts (MHNCs) have shown promising applications in synthesizing active pharmaceutical ingredients (APIs). These catalysts, with high biodegradability and biocompatibility, offer convenient preparation routes and can replace complex purification procedures.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Shikuan Shao, Xiangyu Zhu, Victoria Ten, Moon J. Kim, Xiaohu Xia
Summary: The thermal stability of nanocages, specifically silver-gold alloyed nanocages, was studied in this research. It was found that the wall thickness of the nanocage is a critical parameter in determining its thermal stability. Nanocages with thicker walls displayed better stabilities and underwent deformation to more stable nanostructures at high temperatures. The deformation processes and changes in plasmonic properties were monitored and analyzed using electron microscopy imaging.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Valery Okatenko, Anna Loiudice, Mark A. Newton, Dragos C. Stoian, Anastasia Blokhina, Alexander N. Chen, Kevin Rossi, Raffaella Buonsanti
Summary: Researchers have successfully synthesized CuGa nanoparticles and demonstrated that alloying Cu with Ga greatly improves the stability of the nanocatalysts. In particular, CuGa nanoparticles containing 17% Ga preserved most of their CO2RR activity for at least 20 hours, while Cu nanoparticles of the same size reconstructed and lost their CO2RR activity within 2 hours.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Valery Okatenko, Anna Loiudice, Mark A. Newton, Dragos C. Stoian, Anastasia Blokhina, Alexander N. Chen, Kevin Rossi, Raffaella Buonsanti
Summary: Researchers synthesized tunable CuGa nanoparticles and found that alloying Cu with Ga greatly improves the stability of the nanocatalysts in the electrochemical CO2 reduction reaction. Various characterization techniques suggest that the addition of Ga can suppress Cu oxidation and enhance electronic interactions, resulting in the stabilized CuGa nanoparticles.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Bing-Hsien Kao, Yu-Fang Zeng, Yao-Chang Lee, Chih-Wen Pao, Jeng-Lung Chen, Yu-Chun Chuang, Hwo-Shuenn Sheu, Fu-Te Tsai, Wen-Feng Liaw
Summary: In this study, a water phase synthetic protocol and surface architecture engineering strategy were used to construct monodispersed Bi-doped Cu-based nanocatalysts. The research investigated the synergistic effect between geometric and electronic structures on CO2RR selectivity. The study revealed that the regulation of adsorption capacities through appropriate Bi3+ doping can rationalize the strongly correlated catalytic directionality.
Article
Criminology & Penology
Leah C. Butler, Francis T. Cullen, Velmer S. Burton Jr
Summary: Public belief in redeemability reduces punitiveness and increases support for policy measures such as rehabilitation, expungement, and housing and employment opportunities. Racial attitudes, including racial resentment, racial sympathy, and White nationalism, have significant effects on beliefs about redeemability and condemnation of Black offenders. These findings suggest that racial attitudes play a role in shaping attitudes towards redemption, particularly for Black offenders.
Article
Chemistry, Physical
Yonghui Zhao, Xiaoli Yang, Xiang Meng, Rui Hu, Xiaoliu Duan, Zhengya Gan, Jianjun Ding, Yi Gong, Xingyou Tian
Summary: Encapsulation of Cu nanoparticles by carbon chain mail can extend the service endurance, but it may lead to changes in surface compositions and catalytic properties. This study reports the unexpected enhancement of catalytic activity of graphitic chain mail-encapsulated Cu nanocatalysts when immersed in water for 10 days. The increase in catalytic activity is due to the formation of Cu2O at the interface of Cu core and graphite shell, derived from the diffusion of dissolved oxygen.
Article
Chemistry, Physical
Seokheon Kim, Ly Thi Minh Huynh, Sangwoon Yoon
Summary: In this study, the influence of gold nanoparticle shape on the efficiency of generating hot charge carriers was investigated. It was found that gold nanorods are more effective in producing hot charge carriers compared to other shapes. These findings provide valuable insights for the design of highly efficient plasmonic photocatalysts.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)