Article
Chemistry, Inorganic & Nuclear
Xiaodi Yu, Shenhua Chen, Ziqing Bian, Wenhua Li, Zhishan Bo
Summary: A model system is established to achieve the formation of polymetallic nanocrystals (NCs) by diffusion of metal atoms between different NCs. The bond strength difference between metal atoms and the high surface-to-volume ratio of NCs play important roles in this process. Using the Au-Cu-Ag trimetallic system as an example, core-shell AuCu@Ag NCs are successfully formed by combining AgCu NCs with Au NCs.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Yang Liu, Xiao-Man Yao, Xu Liu, Zhiliang Liu, Yan-Qin Wang
Summary: In this study, a Cu2+1O/Ag-CC heterostructured electrocatalyst was successfully fabricated by constructing a heterogeneous interface between Cu2+1O and Ag for selective electrochemical nitrate-to-ammonia conversion. The construction of the heterogeneous interface effectively promotes the synergistic effect of the catalytically active components Cu2+1O and Ag, improving the performance of ENO3RR. Moreover, Cu2+1O/Ag-CC exhibits high NH3 yield and notable ammonia FE, as well as excellent electrochemical stability, making it an efficient catalyst for ammonia electro-synthesis.
INORGANIC CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Venkata N. K. B. Adusumalli, Stefan Lis, Yong Il Park
Summary: The fluorescence quenching strategy using DPA-capped-LaF3:Eu3+ nanocrystals was developed for the determination of Cu2+ ions. DPA acted as a surfactant and sensitizer, transferring its exciting energy to Eu3+ ions, resulting in strong red emission. Cu2+ ions and CO32- ions caused significant quenching of the emission intensity. The method showed high selectivity towards Cu2+ ions and minimal interference from other metal ions.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Inorganic & Nuclear
Olga Kerber, Jozef Tran, Alicja Misiaszek, Aleksandra Choraz, Wojciech Bal, Artur Krezel
Summary: The widespread use of silver nanoparticles in various products increases exposure to Ag(I) in biological environments, affecting cellular metallome. It has been observed that Ag(I) can displace native metal ions from protein sites, which is known to be toxic. In this study, the interaction between Ag(I) and the peptide model of the interprotein zinc hook (Hk) domain of Rad50 protein was investigated. Experimental methods including UV-vis spectroscopy, circular dichroism, isothermal titration calorimetry, and mass spectrometry were utilized to examine the binding of Ag(I) to the peptide models. The results showed that Ag(I) disrupted the structure of the Hk domain by replacing the structural Zn(II) ion with multinuclear Agx(Cys)y complexes, indicating that Ag(I) ions can easily disrupt interprotein zinc binding sites and contribute to silver toxicity at the cellular level.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Suvodeep Sen, Sanjib Shyamal, Shyamal Kumar Mehetor, Puspanjali Sahu, Narayan Pradhan
Summary: The study explores plasmonic semiconductor Cu2-xTe disks grown on Au nanoparticles as efficient photoelectrocatalysts for hydrogen evolution reactions. These heterostructured nanocrystals exhibit low Tafel slope and less cathodic overpotential in the presence of light.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Analytical
Mathews de Oliveira Krambeck Franco, Gabriel Abranches Dias Castro, Castelo Vilanculo, Sergio Antonio Fernandes, Willian Toito Suarez
Summary: A thiocarbazone was synthesized for the selective determination of Cu2+ in distilled beverages, with the colored product analyzed using a smartphone application. The optimized method showed a low detection limit and relative standard deviation in the range of 0.25 to 6.75 mg L-1 for Cu2+ concentrations. Recovery experiments indicated good accuracy with recoveries ranging from 80.5% to 112.2%.
ANALYTICA CHIMICA ACTA
(2021)
Article
Energy & Fuels
Andrew H. Hubble, Emily M. Ryan, Jillian L. Goldfarb
Summary: The study explores the use of in situ transition metal catalysts during cellulose pyrolysis, which enhances hydrogen gas production and improves bio-oil yields while decreasing the average molecular weight of oil compounds. Nickel was found to be the most effective in generating hydrogen gas and producing a wider array of light-weight bio-oil compounds. Copper aided dehydrogenation at lower temperatures and initiated primary pyrolysis by generating specific compounds. Through understanding how catalysts enhance bio-oils, high-density and cleaner-burning liquid fuels can be developed to displace fossil fuels.
Article
Chemistry, Multidisciplinary
Chenghui Xia, Christina H. M. van Oversteeg, Veerle C. L. Bogaards, Tim H. M. Spanjersberg, Nienke L. Visser, Anne C. Berends, Johannes D. Meeldijk, Petra E. de Jongh, Celso de Mello Donega
Summary: Colloidal heteronanocrystals offer the synergistic combination of properties of different materials, such as spatial separation of photogenerated charge carriers to improve the efficiency of photocatalysts and photovoltaic devices. The synthesis of Cu2-xS/CuInS2 Janus-type heteronanorods through a two-step process allows for the rational design of heteronanocrystals with targeted architectures. By exploiting the size and faceting of premade Cu2-xS seed nanocrystals, the growth of the CuInS2 segment is directed, showcasing the potential for controlled synthesis in the formation of heteronanocrystals.
Article
Biochemistry & Molecular Biology
Anne Bernhardt, Jana Bacova, Uwe Gbureck, Michael Gelinsky
Summary: The study found that the effects of Cu2+ on osteoclasts varied depending on their differentiating or mature state. High TRAP activity does not necessarily correlate with high resorption capacity.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Energy & Fuels
Jiayong Zhang, Bin Yao, Zhanhui Ding, Yongfeng Li, Ding Ma, Mengge Li, Yuting Sun, Chunkai Wang, Yue Liu, Xiaofei Sun
Summary: By tuning the ratio of copper ions in the precursor solution, the poor short-circuit current density caused by silver substitution in Cu2ZnSn(S,Se)4 solar cells is effectively mitigated, leading to improved performance of the Ag-substituted CZTSSe solar cells.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Nanoscience & Nanotechnology
Giuseppe Sanzone, Susan Field, David Lee, Jingzhou Liu, Pengfei Ju, Minshi Wang, Parnia Navabpour, Hailin Sun, Jinlong Yin, Peter Lievens
Summary: Wear-resistant antimicrobial thin films prepared by magnetron sputtering can effectively inhibit the proliferation of bacteria and fungi inside spacecrafts, and they have long-lasting antibacterial effects. Among them, silver cluster-doped amorphous carbon coatings not only have good antibacterial effects, but also have a longer lifespan.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Analytical
Stanislas Nsanzamahoro, Wei-Feng Wang, Ying Zhang, Cheng-Bo Wang, Yan-Ping Shi, Jun-Li Yang
Summary: In this study, a novel analytical method using silicon nanoparticles (Si NPs) was developed for the straightforward determination of beta-glucuronidase (beta-GCase). The Si NPs were synthesized through a simple hydrothermal treatment and exhibited fluorometric signals. The activity of beta-GCase was monitored through the production of Si NPs, and the method showed a low limit of detection (LOD) of 0.02 U/L.
Article
Chemistry, Physical
Chenghui Xia, Adrian Pedrazo-Tardajos, Da Wang, Johannes D. Meeldijk, Hans C. Gerritsen, Sara Bals, Celso de Mello Donega
Summary: Colloidal copper(I) sulfide nanocrystals have unique optoelectronic properties, making them potential seeds for the synthesis of heteronanocrystals. By using a multistep synthesis strategy, Cu2-xS/ZnS Janus-type heteronanorods were successfully obtained with sharp heterointerfaces. This work demonstrates the rational synthesis of multicomponent heteronanorods by combining postsynthetic heteroepitaxial seeded growth and nanoscale cation exchange.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Hye-Jin Hong, Jungho Ryu
Summary: In this study, Cu2+ from wastewater was recovered and transformed into Cu-0 NPs, a value-added product, through continuous adsorption and chemical reduction. A biosorbent PEI@CNF and a chemical reducer hydrazine were used to achieve the conversion. The results showed that Cu-0 NPs with specific concentration and size can be obtained through this method.
Article
Chemistry, Analytical
Xianfeng Wang, Shasha Liu, Changjun Hou, Mei Yang, Jingzhou Hou, Suyi Zhang, Danqun Huo
Summary: A colorimetric nanoprobe based on gold nanohexagonals coated silver nanotriangles (AgNTs@AuNHs) has been developed for the ultrasensitive detection of trace Pb2+ and Cu2+ ions. The method utilizes the different etching reactions of Pb2+ and Cu2+ on AgNTs@AuNHs to achieve sensitive and selective detection and quantification of these heavy metal ions. Additionally, the method enables visual detection of Pb2+ and Cu2+ through color changes.
MICROCHEMICAL JOURNAL
(2024)