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The TiO2-CNT composite – modified CNT (Cetyltrimethylammonium bromide) photocatalyst material was successfully prepared. The composites material was characterized by Scanning Electron Miscroscopy (SEM), X-ray Diffraction (XRD), Fourier Transform Infrared absorption spectroscopy (FTIR), and Breneur Emmet Teller (BET). The TiO2-CNT composite-modification CNT (Cetyltrimethylammonium bromide) formation obtained are discussed in detail. The highest performance effectiveness of photocatalyst material composites for degrading phenol was obtained on phenol concentration 10 mg/L and degradation temperature at 50°C was 98,74 %