Solid state ball milling as a green approach to prepare Cu(ii) complexes: structural, spectral, DFT, and DNA studies

2017 ◽  
Vol 41 (11) ◽  
pp. 4555-4563 ◽  
Author(s):  
Rania Zaky ◽  
Ahmed Fekri
Keyword(s):  
Solid State ◽  
Ball Milling ◽  
Environmentally Friendly ◽  
Organometallic Compounds ◽  
Green Approach ◽  
Milling Method

An effective and environmentally friendly ball milling method was used to prepare a series of organometallic compounds.

scholarly journals Mechanochemical Ring-Opening Metathesis Polymerization: Development, Scope, and Mechano-Only Copolymer Synthesis

2021 ◽  
Author(s):  
Gue Seon Lee ◽  
Hyo Won Lee ◽  
Hyun Sub Lee ◽  
Taeyang Do ◽  
Jean-Louis Do ◽  
...  
Keyword(s):  
Solid State ◽  
Ball Milling ◽  
Ring Opening ◽  
High Speed ◽  
Wide Spectrum ◽  
Mechanical Energy ◽  
Ring Opening Metathesis Polymerization ◽  
Metathesis Polymerization ◽  
Ball Size ◽  
Milling Method

Ruthenium-alkylidene initiated ring-opening metathesis polymerization (Ru-ROMP) was realized under solid-state conditions employing a mechanochemical ball milling method, promoting greenness and broadening scope. High-speed ball milling provided sufficient mixing and energy to the reaction mixture comprised of the catalyst and solid monomers, thus eliminating the need for solvents. Studies on the catalytic species and ball milling parameters (liquid-assisted grinding, vibration frequency, and ball size) revealed that mechanical energy regulated solid-state Ru-ROMP and it follows similar mechanistic features of solution-phase reactions. The solubility and miscibility of monomer and Ru-initiator are not a limitation in solid-state ball milling. Without the use of a solvent, a wide spectrum of solid monomers, including ionomer, fluorous monomer, and macromonomers, were successfully polymerized. Finally, effective direct copolymerization of immiscible monomers such ionic/hydrophobic and ionic/fluorous monomers resulted in a set of copolymers that are difficult to make using traditional solution procedures.

Cu/SAPO-34 prepared by a facile ball milling method for enhanced catalytic performance in the selective catalytic reduction of NOx with NH3

2019 ◽  
Vol 21 (39) ◽  
pp. 22113-22120 ◽  
Author(s):  
Huazhen Chang ◽  
Xuan Qin ◽  
Lei Ma ◽  
Tao Zhang ◽  
Junhua Li
Keyword(s):  
Solid State ◽  
Ion Exchange ◽  
Selective Catalytic Reduction ◽  
Ball Milling ◽  
Catalytic Reduction ◽  
Catalytic Performance ◽  
Mechanical Mixing ◽  
Reduction Of No ◽  
Milling Method ◽  
Reduction Of Nox

Cu/SAPO-34 catalysts were prepared by different solid-state ion exchange methods, i.e., mechanical mixing (Cu/SAPO-34-M) and ball milling (Cu/SAPO-34-B), and were used for selective catalytic reduction of NOx with NH3 (NH3-SCR) reaction.

Effect of densification technique and carrier concentration on the thermoelectric properties of n-type Cu1.45Ni1.45Te2 ternary compound

CrystEngComm ◽  
2020 ◽  
Vol 22 (46) ◽  
pp. 8100-8109
Author(s):  
S. Kavirajan ◽  
J. Archana ◽  
S. Harish ◽  
M. Navaneethan ◽  
S. Ponnusamy ◽  
...  
Keyword(s):  
Solid State ◽  
Carrier Concentration ◽  
Ball Milling ◽  
Spark Plasma Sintering ◽  
Ternary Compound ◽  
Thermoelectric Properties ◽  
Cold Pressing ◽  
Plasma Sintering ◽  
Milling Method ◽  
Spark Plasma

Cu1.45Ni1.45Te2 ternary compound was synthesized by solid-state ball-milling method and densified via spark plasma sintering (SPS) and cold-pressing with annealing (CPA) techniques.

Characterization of Forsterite Synthesized by Solid-State Reaction with Ball Milling Method

2013 ◽  
Vol 372 ◽  
pp. 416-419
Author(s):  
K.M. Christopher Chin ◽  
K.Y. Sara Lee ◽  
C.Y. Tan ◽  
Ramesh Singh ◽  
W.D. Teng
Keyword(s):  
Solid State ◽  
Ball Milling ◽  
Solid State Reaction ◽  
Biomedical Application ◽  
Secondary Phase ◽  
Holding Time ◽  
Time Duration ◽  
Milling Method ◽  
Sintering Method

Talc and magnesium oxide are used to prepare forsterite (Mg2SiO4) powder by solid-state reaction with ball milling method. The samples were sintered at temperature 1200°C, 1300°C, 1400°C and 1500°C with four different holding time duration 2 hours, 1 hour and 1 minute with ramp rate of 10°C/min respectively via conventional pressureless sintering method. 3 hours ball milling is sufficient to form pure forsterite without any secondary phase. Highest values for fracture toughness (3.8 MPa.m1/2) and Vickers micro-hardness (5.0 GPa) recorded with sintering temperature 1500°C with 1 hour holding time which makes forsterite suitable potential for biomedical application.

scholarly journals Solid-State Ball-Milling of Co3O4 Nano/Microspheres and Carbon Black Endorsed LaMnO3 Perovskite Catalyst for Bifunctional Oxygen Electrocatalysis

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 76
Author(s):  
Chelladurai Karuppiah ◽  
Balamurugan Thirumalraj ◽  
Srinivasan Alagar ◽  
Shakkthivel Piraman ◽  
Ying-Jeng Jame Li ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Energy Storage ◽  
Fuel Cell ◽  
Solid State ◽  
Carbon Black ◽  
Ball Milling ◽  
Potential Candidate ◽  
X Ray ◽  
Bifunctional Electrocatalyst ◽  
Bet Analysis

Developing a highly stable and non-precious, low-cost, bifunctional electrocatalyst is essential for energy storage and energy conversion devices due to the increasing demand from the consumers. Therefore, the fabrication of a bifunctional electrocatalyst is an emerging focus for the promotion and dissemination of energy storage/conversion devices. Spinel and perovskite transition metal oxides have been widely explored as efficient bifunctional electrocatalysts to replace the noble metals in fuel cell and metal-air batteries. In this work, we developed a bifunctional catalyst for oxygen reduction and oxygen evolution reaction (ORR/OER) study using the mechanochemical route coupling of cobalt oxide nano/microspheres and carbon black particles incorporated lanthanum manganite perovskite (LaMnO3@C-Co3O4) composite. It was synthesized through a simple and less-time consuming solid-state ball-milling method. The synthesized LaMnO3@C-Co3O4 composite was characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, transmission electron microscopy, Brunauer-Emmett-Teller (BET) analysis, X-ray diffraction spectroscopy, and micro-Raman spectroscopy techniques. The electrocatalysis results showed excellent electrochemical activity towards ORR/OER kinetics using LaMnO3@C-Co3O4 catalyst, as compared with Pt/C, bare LaMnO3@C, and LaMnO3@C-RuO2 catalysts. The observed results suggested that the newly developed LaMnO3@C-Co3O4 electrocatalyst can be used as a potential candidate for air-cathodes in fuel cell and metal-air batteries.

Luminescent Properties of LiTaO3:Tm3+, Yb3+ Phosphors Prepared by Ball Milling Method

2013 ◽  
Vol 423-426 ◽  
pp. 426-429
Author(s):  
Xin Ze Wang ◽  
Zhong Xin Liu ◽  
Hong Jian Gao ◽  
Yani Jing ◽  
Chang Lin Li ◽  
...  
Keyword(s):  
Solid State ◽  
Ball Milling ◽  
Solid State Reaction ◽  
Blue Emission ◽  
Photoluminescence Property ◽  
Luminescent Properties ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Conventional Solid State Reaction ◽  
Energy Ball

LiTaO3: Tm3+, Yb3+powders were synthesized by a high-energy ball-milling (HEB) method compared with the conventional solid-state reaction (SSR) method. Under the excitation of 980 nm laser, the strong blue emission (477 nm) band is observed and attributed to1G4-3H6of Tm3+. Because of it causing high local temperature and narrow particles size, increasing the contact area between the particles and improved crystallinity of the host, synthesis by high-energy ball milling show higher photoluminescence (PL) intensity compared to the solid state reaction method. In the process of mechanical milling, Tm3+, Yb3+co-doped LiTaO3phosphors with high photoluminescence property could be achieved at a relatively low reaction temperature.

Sign in / Sign up

Export Citation Format

Share Document