<p>Titanium dioxide dispersed on reduced graphene oxide mixed zirconium phosphate HKUST-1 (ZrP@HKUST-1/Ti@rGO) was synthesized and utilized for an efficient photodegradation of aqueous phenol. Modified Hummer method was adopted for the synthesis of the reduced graphene oxide (rGO) nanosheets. Titanium dioxide was dispersed and inculcated on the surface of rGO via sonothermal method. Similarly, ZrP@HKUST-1 was also synthesized by modified method and physically mixed with Ti@rGO to obtain hybrid material (ZrP@HKUST-1/Ti@rGO). Different characterization techniques such as SEM, EDX, XRD, FTIR, TGA, XANES and Zeta potential were used to investigate physicochemical features of the hybrid material. Photocatalytic performance of the hybrid material for aqueous phenol under UV environment was investigated in a photocatalytic reactor. The reaction mixture was analyzed by high performance liquid chromatography (HPLC) for phenolic remnants. The reaction conditions for the degradation of phenol (≈90%) was optimized i.e. time; 80&#xa0;min, conc; 100&#xa0;ppm, pH; 5&#xa0;ppm, cat; 0.1&#xa0;g and temp; 55 ºC. The experimental data showed best fit to first order kinetic model (R<sup>2</sup> = 0.98) with rate constant k = 0.038&#xa0;min<sup>−1</sup>. The hybrid material exhibited excellent regeneration ability with minimal loss in activity and therefore consider a potential candidate for variety of applications.</p>

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Novel Hybrid Material as a Robust Photocatalyst for Degradation of Aqueous Phenolic Contamination

  • Bushra Bostan,
  • Saima Sadiq,
  • Inam Ullah,
  • Makkah Zaman,
  • Mian Muhammad,
  • Muhammad Sadiq

摘要

Titanium dioxide dispersed on reduced graphene oxide mixed zirconium phosphate HKUST-1 (ZrP@HKUST-1/Ti@rGO) was synthesized and utilized for an efficient photodegradation of aqueous phenol. Modified Hummer method was adopted for the synthesis of the reduced graphene oxide (rGO) nanosheets. Titanium dioxide was dispersed and inculcated on the surface of rGO via sonothermal method. Similarly, ZrP@HKUST-1 was also synthesized by modified method and physically mixed with Ti@rGO to obtain hybrid material (ZrP@HKUST-1/Ti@rGO). Different characterization techniques such as SEM, EDX, XRD, FTIR, TGA, XANES and Zeta potential were used to investigate physicochemical features of the hybrid material. Photocatalytic performance of the hybrid material for aqueous phenol under UV environment was investigated in a photocatalytic reactor. The reaction mixture was analyzed by high performance liquid chromatography (HPLC) for phenolic remnants. The reaction conditions for the degradation of phenol (≈90%) was optimized i.e. time; 80 min, conc; 100 ppm, pH; 5 ppm, cat; 0.1 g and temp; 55 ºC. The experimental data showed best fit to first order kinetic model (R2 = 0.98) with rate constant k = 0.038 min−1. The hybrid material exhibited excellent regeneration ability with minimal loss in activity and therefore consider a potential candidate for variety of applications.