TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The mixture solution of nitric acid and sulfuric acid is a mixture solution of nitric acid (14 M, 50 ml) and sulfuric acid (98%, 50 ml) or a mixture solution of sulfuric acid (98%) and nitric acid (70%) in a volume ratio of 3:1. The metal catalyst nanoparticles supported on the cellulose catalyst support by the chemical deposition or impregnation comprise platinum particles, and a platinum precursor for supporting the platinum particles on the cellulose catalyst support is trimethyl (methylcyclopentadienyl)-platinum(IV), (cyclopentadienyl)trimethyl platinum(IV), platinum (trifluoroacetylacetonato) ligand, (cyclopentadienyl)-methyl-carbonyl-platinum(IV), dimethylplatinum (cyclooctadiene)(II), bis((acetylacetonato)trimethylplatinum(IV)), dicarbonyldichloroplatinum(II), tetrakis(trifluorophosphine)platinum(0), bis-(acetylacetonato)-platinum(II) or tris(ethylene)platinum. The catalyst nanoparticles supported on the cellulose catalyst support by the chemical deposition or impregnation comprise nickel particles, and a nickel precursor for supporting the nickel particles on the cellulose catalyst support is nickel nitrate or nickel tetra carbonyl. The metal catalyst nanoparticles supported on the cellulose catalyst support by the chemical deposition or impregnation comprise cobalt particles, and a cobalt precursor for supporting the cobalt particles on the cellulose catalyst support is cobalt tricarbonyl nitrosyl or cobalt(II) nitrate. The catalyst nanoparticles supported on the cellulose catalyst support by the chemical deposition or impregnation, comprise molybdenum particles, and a molybdenum precursor for supporting the molybdenum particles on the cellulose catalyst support is molybdenum hexacarbonyl. Preferred Method: The supporting metal catalyst nanoparticles on the cellulose catalyst support by the chemical vapor deposition comprises: removing impurities from within a quartz tube by placing the prepared cellulose catalyst support at a center of the quartz tube and maintaining the quartz tube at a pressure of 6-10 Torr at 110-120 degrees C for 30-120 minutes, elevating an internal temperature of the quartz tube having the cellulose catalyst support to 80-300 degrees C and supplying a gaseous metal precursor into the quartz tube under vacuum after a target reaction temperature is reached, hence allowing the metal catalyst nanoparticles to be supported on the cellulose catalyst support; or by depositing the prepared cellulose catalyst support in an aqueous solution of a metal precursor, ultrasonicating the cellulose catalyst support, drying the cellulose catalyst support, and burning the cellulose catalyst support in nitrogen atmosphere.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The oxidizing group introduced to the surface of the natural cellulose fibers comprises carboxyl, methyne, carboxy, carbon dioxide or carbonate.    TECHNOLOGY FOCUS - POLYMERS - Preferred Method: The electron beam treatment of the natural cellulose fibers comprises irradiating an electron beam of 10-500 kGy to the natural cellulose fibers. The heat treatment of the natural cellulose fibers comprises cutting the natural cellulose fibers to a length of 1-2 mm with the natural cellulose fibers impregnated in liquid nitrogen and heat-treating natural cellulose fibers at 500-1500 degrees C for 0.2-2 hours. The chemical treatment of the natural cellulose fibers comprises sweeping the heat treated natural cellulose fibers in 10-60 cycles at -0.15 to 1.3 V at a sweep rate of 50 mV/s, with the heat-treated natural cellulose fibers immersed in a 0.1-0.5 M aqueous sulfuric acid solution, followed by chemically treating the natural cellulose fibers for 10-20 minutes or at 50-70 degrees C for 5 minutes to 6 hours under reflux, with the natural cellulose fibers immersed in a 30% nitric acid solution (or 14 N nitric acid solution) at 100-150 degrees C or with the natural cellulose fibers immersed in a mixture solution of nitric acid and sulfuric acid, respectively. The method further comprises washing and drying the chemically treated natural cellulose fibers to prepare the cellulose catalyst support. EXAMPLE - Henequen fibers were subjected to electron beam treatment (at 10-500 kGy) to remove impurities oxidized at low temperature. The electron beam-treated henequen fibers were subjected to heat treatment where the henequen fibers were separated into thin fibers of 10-100 mu m and then cut into short fibers of 1-2 mm in length after impregnating the fibers in liquid nitrogen. The cut henequen fibers were heated to 500-1500 degrees C (at a rate of 5-20 degrees C/minute) under an atmosphere of a 1:1 mixture of hydrogen and nitrogen. Then, the temperature was maintained at 500-1500 degrees C for 1 hour to carbonize the henequen fibers. The heat-treated henequen fibers were immersed in aqueous sulfuric acid (0.5M) solution and subjected to sweeping in 10-60 cycles from -0.15 to 1.3 V at a sweep rate of 50 mV/second. Then, the henequen fibers were immersed in a mixture of nitric acid (14M, 50 ml) and sulfuric acid (98%, 50 ml) and chemically treated at 60 degrees C for 10 minutes under reflux. After sufficiently washing the sample with distilled water and filtering, the treated sample was dried at 110 degrees C for 12 hours, to obtain a cellulose catalyst support. The obtained cellulose catalyst support was placed in a quartz tube positioned in the middle of a furnace. After maintaining the tube at a pressure of 6 Torr at 110 degrees C for 30 minutes to remove impurities from the inside of the quartz tube, nitrogen was supplied for an hour. Then, after adding nickel carbonyl to a vaporizer, nitrogen was supplied at 35 degrees C, so that the gaseous nickel precursor could be conveyed to the cellulose catalyst support in the reactor, to obtain a catalyst having nickel nanoparticles supported on the cellulose catalyst by chemical vapor deposition.