Oxide-Carbon Adsorbent for Ciprofloxacin
Official patent title
Amorphous silica/cubic Co3O4/cubic NiO/C nanocomposite and method of preparation thereof
Arabic title: مركب نانوي من السيليكا غير المتبلورة/Co.SUB.3.O.SUB.4. المكعب/NiO المكعب/C وطريقة تحضيره
Invention
Invention
Problem
Multicomponent nanocomposite preparation can produce uneven particle distribution, agglomeration, contamination, inconsistent morphology, harsh processing, long reaction times, or difficulty combining several functions in one material.
Why it matters
A defined silica/cobalt-oxide/nickel-oxide/carbon adsorbent could support pharmaceutical-removal research, but capacity in realistic water, selectivity, regeneration, metal leaching, by-products, and safety require independent verification.
Approach
The method precipitates nickel and cobalt salts with vinyltrimethoxysilane using ammonium hydroxide, then filters, washes, dries, and calcines the gel to form amorphous SiO2 with cubic Co3O4 and NiO phases and carbon.
Who may benefit
Potential beneficiaries include wastewater-treatment researchers, pharmaceutical-removal laboratories, adsorbent manufacturers, oxide-materials groups, and process developers evaluating multifunctional silica composites.
Potential value
The disclosure connects three defined phases and carbon with granular and nanoscale dimensions, elemental ranges, a claimed ciprofloxacin adsorption capacity, and a bounded precipitation-calcination process.
Background
Background
Silica, cobalt oxide, nickel oxide, and carbon can contribute distinct surface, catalytic, or structural functions, but combining them uniformly is difficult. Melt blending, milling, vapor deposition, and solution casting may produce uneven distribution, contamination, incomplete coatings, or agglomeration. Other routes can require harsh precursors, high energy, long processing, or substantial chemical waste. The patent proposes a precipitation and calcination method for a granular multiphase material and reports ciprofloxacin adsorption as one functional endpoint.
Technology overview
Technology overview
The material contains amorphous SiO2, cubic Co3O4, cubic NiO, and carbon. Claim 1 defines 0.5–2.5 μm average grain size, 30–90 nm average nanoscale-particle diameter, and ciprofloxacin adsorption capacity of at least 170 mg/g. NH4OH is added dropwise to Ni(NO3)2·6H2O, Co(NO3)2·6H2O, and vinyltrimethoxysilane. After one hour of stirring, the gel precipitate is filtered, washed, dried at 100 °C, and calcined at 600–800 °C for 1–5 hours.
Potential applications
Potential applications
- Potential adsorption studies for ciprofloxacin-contaminated water.
- Potential pharmaceutical-wastewater polishing research.
- Potential multifunctional oxide/carbon adsorbent development.
- Potential fixed-bed or membrane-media studies after leaching validation.
Evidence-supported advantages
Evidence-supported advantages
- Combines amorphous silica with two cubic oxide phases and carbon.
- Defines grain, nanoparticle, and crystallite-size ranges.
- Claims ciprofloxacin adsorption capacity of at least 170 mg/g.
- Uses a specified precipitation, washing, drying, and calcination sequence.
Development stage
Development stage
The patent publication describes material synthesis and characterization and states a ciprofloxacin adsorption capacity; independent performance validation and commercialization were not established.
Commercial opportunity
Commercial opportunity
The material may interest pharmaceutical-wastewater and specialty-adsorbent developers. Required work includes independent isotherm and kinetic data, realistic mixed-water testing, pH and interference effects, regeneration cycles, cobalt and nickel leaching, spent-media handling, treated-water toxicity, scale-up reproducibility, fixed-bed hydraulics, worker exposure control, lifecycle impacts, and comparative treatment cost.
Patent classifications
Patent classifications
WIPO IPC
- C01G53/04Compounds containing metals not covered by subclasses C01D or C01F
- B82Y30/00Specific uses or applications of nanostructures; measurement or analysis of nanostructures; manufacture or treatment of nanostructures
CPC
- B82Y30/00Specific uses or applications of nanostructures; measurement or analysis of nanostructures; manufacture or treatment of nanostructures
- C01G53/04Compounds containing metals not covered by subclasses C01D or C01F
- C01P2002/02Indexing scheme for structural and physical aspects of solid inorganic compounds
- C01P2002/85Indexing scheme for structural and physical aspects of solid inorganic compounds
- C01P2004/62Indexing scheme for structural and physical aspects of solid inorganic compounds
- C01P2004/61Indexing scheme for structural and physical aspects of solid inorganic compounds
- C01P2002/72Indexing scheme for structural and physical aspects of solid inorganic compounds
- C01P2004/82Indexing scheme for structural and physical aspects of solid inorganic compounds
- C01P2004/03Indexing scheme for structural and physical aspects of solid inorganic compounds
- C01P2004/45Indexing scheme for structural and physical aspects of solid inorganic compounds
Inventors
Inventors
- First inventorBabiker Yagoub Elhadi Abdulkhair
- InventorEhab Abdelhamed Abdelrahman Ahmed
Keywords
Keywords
- silica
- Co3O4
- NiO
- carbon
- ciprofloxacin
- adsorption
- wastewater treatment
- nanocomposite
Patent document and drawings
Patent document and drawings
The patent publication is mapped to this record. Patent drawings remain within that publication; no separately cleared public media package has been supplied.