TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Precursor: The titanium precursor is anatase or rutile type titanium dioxide. Preferred Media: The alkaline aqueous media comprises 10 moles or more (preferably, 15 moles or more) of sodium hydroxide. Preferred Conditions: The reaction of titanium precursor in alkaline aqueous media is carried out at elevated temperature of 130 degrees C or more, preferably 150 degrees C or more and elevated pressure for less than two hours, preferably less than one hour. The elevated pressure is achieved by conducting the reaction in a sealed reaction vessel while applying heat. The reaction step is carried out in presence of a titanium substrate, such that the nanomaterial is formed on surface of the substrate. Preferred Material: The nanomaterial comprises nanotubes or nanofibers having an aspect ratio of 200.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The organic acid is selected from ethylenediaminetetraacetic acid, citric acid, and their salts, preferably sodium edetate. Preferred Process: The isolating step of titanate nanomaterial involves washing the reaction product with water or organic alcohol such as ethanol or isopropanol, and further with an acidic aqueous solution comprising hydrochloric acid. EXAMPLE - Sodium hydroxide solution was prepared by dissolving sodium hydroxide pellets in 50 mL deionized water. Then, titanium oxide, bismuth oxide and disodium edentate (in mole ratio of 1:2:2) were suspended in the sodium hydroxide solution. The suspension was then heated in a hermetically sealed reaction vessel for 2 hours at 150 degrees C under constant stirring. The pressure inside the vessel was the autogenous pressure of water at the reaction temperature. The reaction product thus obtained was washed with deionized water to remove unwanted ions, followed by alcohol washing to avoid formation of hard agglomerate. The reaction product contained nanofibers. The fibers had a rectangular cross-section and were present in the form of agglomerates. Elemental analysis (EDS) of the fibers confirmed the presence of oxygen, sodium, bismuth, and titanium. Heating the fibers at 900 degrees C for four hours results in about 10% weight loss, and calcined (heat-treated) fibers had a round cross-section and a smaller aspect ratio as observed by scanning electron microscope.