A surface functionalizing method for use in high-throughput in situ synthesis of nucleic acids by 3D inkjet printing. The method includes subjecting a surface of a substrate to hydroxyl enrichment treatment; adding hydrophobic molecules to the surface of the substrate, the hydrophobic molecules being not reactive with phosphoramidite monomers; spraying, by a multi-channel piezoelectric inkjet head assembly, an etching ink to a predetermined area on the surface of the substrate for micro-etching, the etching ink being prepared with a fluoride compound reactive with the hydrophobic molecules; and adding hydrophilic molecules to the surface of the substrate. By using the method, a functionalized surface with given areas being patterned can be formed on the surface of the substrate, and then a same multi-channel piezoelectric inkjet head assembly can be directly used for subsequent high-resolution printing of phosphoramidite monomers and synthesis of nucleic acids.

Processes for producing supported zinc dimolybdate hydroxide/silica complexes include the steps of reacting a zinc compound (such as zinc oxide) and molybdenum trioxide in an aqueous system to form a reaction mixture, and contacting the reaction mixture with silica to form the supported zinc dimolybdate hydroxide/silica complex. The resulting supported zinc dimolybdate hydroxide/silica complexes contain silica and zinc dimolybdate hydroxide at an amount in a range from 3 to 20 wt. % zinc, and generally, at least 80 wt. % of the zinc dimolybdate hydroxide is present in the form Zn.sub.3Mo.sub.2O.sub.8(OH).sub.2. These supported zinc dimolybdate hydroxide/silica complexes are useful in polymer compositions, such as PVC-based and epoxy-based formulations.

A fire retardant material includes a deconstructed nanoporous material including a plurality of elements, and solids of a fire-retarding solution within the elements of the nanoporous material. A method of forming the fire retardant material includes combining a nanoporous material and a fire-retarding solution such that elements of the nanoporous material absorb the fire retarding solution, and evaporating liquid from the elements of the nanoporous material having the fire-retarding solution absorbed therein such that a concentrate or solids thereof remain within the elements of the nanoporous material.

The present disclosure relates to mesoporous silica wrapped nanoparticle composite nanomaterial, preparation method thereof, and use thereof. In the present disclosure, a nanoparticle is dispersed in an aqueous ethanol solution. Then, ammonia water is added to adjust the pH. After that, cetyltrimethylammonium bromide in an aqueous ethanol solution is added dropwise, and ultrasound is continued, before tetraethyl orthosilicate is added dropwise. The mixture is purified to produce a composite nanomaterial that is stable, controllable, and consistent in size; the shell of the composite nanomaterial is mesoporous silica, the core of the composite nanomaterial is a nanoparticle. Dual-core or triple-core nanoparticles of different kinds/functions can be wrapped into a single mesoporous silica shell to achieve multi-core wrapping. The method is universal and may be used to wrap various nanometers. The preparation procedure is environmentally friendly, efficient, and may be carried out at room temperature.

The disclosure relates to a method for preparing a silica embedded carbon black composite aggregate and the silica embedded carbon black composite aggregate prepared thereby. The disclosure further relates to the use of the silica embedded carbon black composite aggregates in compositions such as rubber compositions.

A method for coating a metal substrate with a white, off-white or gray colored autodeposited coating comprising water, polymeric resin, HF and pigment particles comprising a core of titanium dioxide, an intermediate zirconia and/or alumina layer, and an outer organic layer, optionally the particles are treated with an anionic surfactant.

The present invention relates to spherical, dense micrometre-sized particles comprising colourants. The invention also relates to a material comprising these particles intended for use in papermaking, paint, agri-food, cosmetics or pharmaceuticals. It also relates to the process for preparing these particles and their incorporation in a matrix.

There is disclosed a method of producing etched non-porous particles. The method includes, in some examples, coating a non-porous particle with a hydrophilic polymer and treating the coated particle with acid or base. Also provided is etched non-porous particles capable of separating a variety of analytes, including biomolecules.

The present invention is a low dielectric silica powder, which has an average particle size of 0.1 to 30 μm and a dielectric loss tangent of 0.0005 or less at 10 GHz. An object is to provide: a silica powder with an extremely small dielectric loss tangent; a resin composition containing the same; and a method for manufacturing a silica powder with a low dielectric loss tangent and strong adhesion at the interface to resin.

Provided are porous spherical silica particles whose oil absorption is suppressed while the porous spherical silica particles have a large specific surface area; and a method for manufacturing such spherical silica particles.

According to the present invention, provided are spherical silica particles whose specific surface area obtained by employing a BET method is 300 m.sup.2/g or more, total pore volume is 0.3 ml/g or less, and oil absorption is 50 ml/100 g or less, the spherical silica particles obtained by subjecting silica gel particles obtained by employing a sol-gel method, for example, in which an alkali silicate is emulsified and coagulated, to only drying at a low temperature without subjecting the silica gel particles to calcination at a high temperature; and a method for manufacturing such spherical silica particles.