Provided is a nanocrystal comprising a core comprised in a shell, wherein the core comprises a first material of a perovskite structure comprising a first organic cation not exceeding a molar weight of about 45 g/mol, a first divalent metal and a first counter anion, and, wherein the shell comprises a second material of a perovskite structure comprising a second organic cation having a molar weight between about 74 g/mol and about 187 g/mol, optionally the first organic cation, a second divalent metal and a second counter anion. Provided is further a matrix having the nanocrystal as defined above encapsulated therein. Provided is further a process for the synthesis of a nanocrystal comprising a core comprised in a shell, the process comprising a) preparing a precursor solution containing at least one divalent metal, a first organic cation not exceeding a molar weight of about 45 g/mol, a second organic cation having a molar weight between about 74 g/mol and about 187 g/mol, and at least one counter anion in a polar aprotic solvent; and b) subjecting the precursor solution to a non-polar solvent to form the nanocrystal.

The present invention relates to an anode active material, containing fullerene, for a metal secondary battery and a metal secondary battery using the same. When the anode active material for a metal secondary battery of the present invention is nano-grained and used for an anode of a metal secondary battery, it has inherent electrochemical properties of C.sub.60 fullerene so that excellent specific capacity was exhibited and enables high coulombic efficiency to be exhibited even after not less than 1,000 redox cycles so that it is suitable for use in the anode for a metal secondary battery.

The present disclosure is directed to the scalable synthesis of carbonaceous perimorphic materials, including carbonaceous perimorphic frameworks, on recyclable templates, and using recyclable process liquids. The present disclosure also demonstrates novel perimorphic architectures. In particular, perimorphic frameworks comprising synthetic anthracitic networks are demonstrated. Using these methods, three-dimensional architectures constructed from graphenic carbon can be scalably produced.

The invention relates to a process for the preparation of a vanadium-carbon phosphate composite material, a vanadium-carbon phosphate composite material obtained according to the process, and to the uses of the composite material, especially as a precursor for the synthesis of electrochemically-active materials, electrode or active anode material.

Methods of synthesizing colloidal ternary Group III-V nanocrystals are provided. Also provided are the colloidal ternary Group III-V nanocrystals made using the methods. In the methods, molten inorganic salts are used as high temperature solvents to carry out cation exchange reactions that convert binary nanocrystals into ternary nanocrystals.

Nanostructured aluminosilicates including aluminosilicate nanorods are formed by heating a geopolymer resin containing up to about 90 mol % water in a closed container at a temperature between about 70 C. and about 200 C. for a length of time up to about one week to yield a first material including the aluminosilicate nanorods. The aluminosilicate nanorods have an average width of the between about 5 nm and about 30 or between about 5 nm and about 60 nm or between about 5 nm and about 100 nm, and a majority of the aluminosilicate nanorods have an aspect ratio between about 2 and about 100.

A positive electrode sheet for air batteries according to an embodiment of this invention comprises a waved fibrous carbon and has a BET method specific surface area in a range of 300 to 1200 m.sup.2/g, a 5 to 1000 nm-diameter pore surface area in a range of 200 to 600 m.sup.2/g, a 0.1 to 10 ?m-diameter pore volume in a range of more than 2.0 to no more than 10.0 cm.sup.3/g, a 2 to 1000 nm-diameter pore volume in a range of 1.0 to 5.0 cm.sup.3/g, and a sheet density in a range of 0.05 to 0.23 g/cm.sup.3.

Silver nanoparticles made by a green synthesis method using silver nitrate and a chlorophyll derivative, such as a chlorophyllin are provided. The thus produced silver nanoparticles can have a crystalline structure and an average particle size ranging from about 10 nm to about 40 nm. The disclosed silver nanoparticles may be useful in treating, preventing, and/or reducing insect infestation of a variety of plants, particularly date palms.

Embodiments of the present disclosure relate to zeolites and method for making such zeolites. According to embodiments disclosed herein, a zeolite may have a microporous framework including a plurality of micropores having diameters of less than or equal to 2 nm and a plurality of mesopores having diameters of greater than 2 nm and less than or equal to 50 nm. The microporous framework may include an MFI framework type. The microporous framework may include silicon atoms, aluminum atoms, oxygen atoms, and transition metal atoms. The transition metal atoms may be dispersed throughout the entire microporous framework.

An automated nanomaterials synthesis machine system along with its accompanying graphical user interface (GUI) and variable power supply is disclosed and described. The nanoscale material synthesis system allows the users, the combination and permutation of precursors and of measurable, controllable, recordable parameters of environment and creates facilities for almost infinite possibilities of creativity, observation, study, manipulation of nanoscale, microscale or bigger materials.