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Topic Review
Metal Nanoclusters Synthesized in Alkaline Ethylene Glycol
The “unprotected” metal and alloy nanoclusters (UMCs) prepared by the alkaline ethylene glycol method, which are stabilized with simple ions and solvent molecules, have the advantages of a small particle size, a narrow size distribution, good stability, highly efficient preparation, easy separation, surface modification and transfer between different phases. They can be composited with diverse materials to prepare catalytic systems with controllable structures, providing an effective means of studying the different factors’ effects on the catalytic properties separately. UMCs have been widely used in the development of high-performance catalysts for a variety of functional systems.
  • 802
  • 13 Feb 2023
Topic Review
MOFs as ODS Catalysts
Catalytic oxidative desulfurization (ODS) of fuel oils is considered one of the most promising non-hydrodesulfurization technologies due to the advantages of mild reaction conditions, low cost and easy removal of aromatic sulfur compounds. Based on this reason, the preparation of highly efficient ODS catalysts has been a hot research topic in this field. Metal-organic frameworks (MOFs) have received much attention due to advantages such as abundant metal centers, high surface areas and varied pore structures, which are composed of secondary building units (SBUs) connected by organic linkers to form crystalline porous materials. Such materials possess both the rigidity of inorganic materials and the flexibility of organic materials. Moreover, rich metal centers in the structure of MOFs could be catalytic active sites for some chemical reactions.
  • 794
  • 19 Jan 2022
Topic Review
Vibrational Coherence in MMLCT and MC Excited State
There have been significant advancements in the investigation of coherence-related phenomena in organic systems such as biological photosynthetic reaction centers. The d8 Pt(II) dinuclear complex or molecular aggregate with a metal–metal-to-ligand charge transfer (MMLCT) or metal-centered (MC) excited state was reported to show the vibrational coherence phenomenon in the intersystem crossing (ISC) process, due to the Metal–metal (M-M) interaction at excited state.
  • 754
  • 24 Nov 2023
Topic Review
Synthesis of Lithium Lanthanum Titanate
Solid state batteries could potentially improve the characteristics of the conventional Li-ion batteries (capacity, charge/discharge rate, safety and sustainability) by replacing the organic electrolyte of the standard battery with a solid (crystalline, but also polymer and hybrid) electrolyte. One of the most promising solid electrolytes is Li3xLa2/3−xTiO3 (LLTO). A number of synthesis techniques have been employed for the preparation of the LLTO compounds. These can be divided on two subcategories: bulk material synthesis and nanostructured material synthesis. The first category contains primarily two methods: sol-gel method and the solid-state reaction method. Nanostructured materials are obtained by thin film deposition techniques and by electrospinning.
  • 752
  • 14 Dec 2023
Topic Review
Interlayer Chemical Modulation of Electronic Phase Transitions
Two-dimensional metal chalcogenides (2D-MCs) with complex interactions are usually rich in phase transition behavior, such as superconductivity, charge density wave (CDW), and magnetic transitions, which hold great promise for the exploration of exciting physical properties and functional applications. Interlayer chemical modulation, as a renewed surface modification method, presents congenital advantages to regulate the phase transitions of 2D-MCs due to its confined space, strong guest–host interactions, and local and reversible modulation without destructing the host lattice, whereby new phenomena and functionalities can be produced.
  • 726
  • 08 Feb 2023
Topic Review
CO Molecules Detection on Metal Surfaces
Detection of intermediates during the catalytic process by infrared techniques has been widely implemented for many important reactions. For the reduction of CO2 into hydrocarbons on metal surfaces, CO molecule is one of the most important transient species to be followed due to its involvement in several products’ pathways, and its distinct vibrational features. 
  • 684
  • 28 Jan 2022
Topic Review
Ultrafast Phase Transitions in (001) Si
Researchers demonstrate an ultrafast (<0.1 ps) reversible phase transition in silicon (Si) under ultrafast pressure loading using molecular dynamics. Si changes its structure from cubic diamond to β-Sn on the shock-wave front. The phase transition occurs when the shock-wave pressure exceeds 11 GPa. 
  • 666
  • 04 Mar 2022
Topic Review
Functional Materials for Optical Data Storage
In the current data age, the fundamental research related to optical applications has been rapidly developed. Countless new-born materials equipped with distinct optical properties have been widely explored, exhibiting tremendous values in practical applications. The optical data storage technique is one of the most significant topics of the optical applications, which is considered as the prominent solution for conquering the challenge of the explosive increase in mass data, to achieve the long-life, low-energy, and super high-capacity data storage.
  • 632
  • 01 Mar 2024
Topic Review
Types of Hydrogels for Bearing Anticancer Chemotherapeutics
The advantages of hydrogels as a depot for local application of medicinal substances are due to their tunable physicochemical properties, biocompatibility and the possibility for controllable degradation; due to that, they are intensively investigated as local drug delivery systems. A hydrogel can be defined as a quasi-solid body composed of a three-dimensional (3D) network of hydrophilic macromolecules and water. 
  • 630
  • 31 Jul 2023
Topic Review
The Pnictogen Bond in Metal Halide Perovskites
The pnictogen bond, a somewhat overlooked supramolecular chemical synthon known since the middle of the last century, is one of the promising types of non-covalent interactions yet to be fully understood by recognizing and exploiting its properties for the rational design of novel functional materials. Its bonding modes, energy profiles, vibrational structures and charge density topologies, among others, have yet to be comprehensively delineated, both theoretically and experimentally.
  • 612
  • 14 Feb 2023
Topic Review
Colloids in Curved Space
Self-assembly of nanoscale objects is of essential importance in materials science, condensed matter physics, and biophysics. Curvature modifies the principles and sequence of self-assembly in Euclidean space, resulting in unique and more complex structures. Understanding self-assembly behavior in curved space is not only instrumental for designing structural building blocks and assembly processes from a bottom-up perspective but is also critically important for delineating various biological systems.
  • 602
  • 11 Jan 2024
Topic Review
Sir Andre Konstantin Geim
Sir Andre Geim is a Russian-born Dutch–British physicist and Nobel Laureate, renowned for his groundbreaking contributions to condensed matter physics. He co-discovered graphene in 2004—a one-atom-thick, two-dimensional allotrope of carbon—earning him and Konstantin Novoselov the 2010 Nobel Prize in Physics "for groundbreaking experiments regarding the two-dimensional material graphene." Uniquely, he is also the only person to win both a Nobel and an Ig Nobel Prize, the latter awarded in 2000 for levitating a frog using magnets.
  • 588
  • 13 Jun 2025
Topic Review
Nanocomposites of Ferrites with TiO2 , SiO2 
Ferrites are important magnetic materials used in electronic devices. Nanocomposites of ferrites with TiO2 has gained interest due to its unique advantages, such as high chemical stability, surface-active sites, high specific surface area, non-toxicity, excellent optical properties, and tunable porosity.
  • 586
  • 25 May 2023
Topic Review
Magnetism-Covalent Bonding Interplay
Valence electrons are one of the main players in solid catalysts and in catalytic reactions, since they are involved in several correlated phenomena like chemical bonding, magnetism, chemisorption, and bond activation. This is particularly true in the case of solid catalysts containing d-transition metals, which exhibit a wide range of magnetic phenomena, from paramagnetism to collective behaviour. Indeed, the electrons of the outer d-shells are, on one hand, involved in the formation of bonds within the structure of a catalyst and on its surface, and, on the other, they are accountable for the magnetic properties of the material.
  • 558
  • 23 Feb 2024
Topic Review
Phase Equilibrium Studies of Nonferrous Smelting Slags
Pyrometallurgy is the primary technique for the production of many nonferrous metals such as copper, lead, and zinc. The phase equilibrium information of smelting slags plays an important role in the efficient extraction of metals and energy consumption. The experimental technologies used in phase equilibrium studies are compared. The presentation and applications of the pseudo-ternary and pseudo-binary phase diagrams are demonstrated in the Fe–Si–Ca–Zn–Mg–Al–Cu–S–O system. 
  • 543
  • 15 Mar 2024
Topic Review
Diffusion-Limited Processes in Hydrogels with Chosen Applications
Diffusion is one of the key nature processes which plays an important role in respiration, digestion, and nutrient transport in cells. In this regard, the research aims to review various diffusion approaches used to fabricate different functional materials based on hydrogels, unique examples of materials that control diffusion. They have found applications in fields such as drug encapsulation and delivery, nutrient delivery in agriculture, developing materials for regenerative medicine, and creating stimuli-responsive materials in soft robotics and microrobotics. 
  • 523
  • 24 Aug 2023
Topic Review
Breast Cancer and Isoflavones
The biological properties, mechanisms of action, and available data supporting the potential role of isoflavones in the prevention of breast cancer.
  • 477
  • 28 Jun 2023
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