CV


Mahmood Hajiani

Mahmood Hajiani

Associate Professor

Faculty: Engineering

Department: Civil Engineering

Degree: Doctoral

CV
Mahmood Hajiani

Associate Professor Mahmood Hajiani

Faculty: Engineering - Department: Civil Engineering Degree: Doctoral |

Mahmoud Hajiani is an Associate Professor in the Department of Civil Engineering at the University of Birjand. He holds an M.Sc. in Water Engineering from Iran University of Science and Technology and a Ph.D. in Water and Environmental Engineering from Australia. His research focuses on the removal of emerging contaminants through nanoparticle synthesis, advanced technologies such as photocatalysis, and nano-bio approaches for environmental pollution control. His expertise also includes investigating and removing microplastics from water resources using innovative methods, developing bio-electrochemical systems for wastewater treatment and hydrogen production, modeling the dispersion of emerging pollutants such as microplastics in aquatic environments, and applying remote sensing systems for water quality assessment. He has published numerous research articles in reputable international journals, including those indexed in the JCR database.

My affiliation

Department of Civil Engineering, Faculty of Engineering, University of Birjand

نمایش بیشتر

A hierarchical graphitic carbon nitride supported by metal–organic framework and copper nanocomposite as a novel bifunctional catalyst with long-term stability for enhanced carbon dioxide photoreduction under solar light irradiation

AuthorsMohammad Hossein Sayadi,Mahmood Hajiani
JournalAdvanced Composites and Hybrid Materials
Page number2461-2477
Serial number5
Volume number3
Paper TypeFull Paper
Published At2022
Journal TypeElectronic
Journal CountryIran, Islamic Republic Of
Journal IndexJCR،Scopus

Abstract

Metal–organic frameworks are considered as prospering photocatalysts, which can potentially generate high CO2 removal capacity arising from their large pores and great superficial area. The present study’s aim is the utilization of g-C3N4@Cu/ ZIF-8 nanocomposite to eliminate its structural defects by applying two strategies viz. doping Cu and core-shelling ZIF-8 on g-C3N4. The solvothermal method was used to prepare g-C3N4@Cu/ZIF-8 nanocomposite. Chemical and physical characterizations of the nanocomposite were identified by the different analyses. Photoreduction of CO2 was implemented in a 200-mL domestic Pyrex batch reactor under environment temperature as well as atmospheric pressure and sunlight was used as the light source. The results indicated that the CH3OH production performance in g-C3N4@Cu/ZIF8 (1%) nanocomposite was about three times higher than ZIF-8, which emerged via an increase in the surface area, decrease in electron–hole recombination rate, increase in conductivity, and decrease in bandgap invoking CO2 adsorption capacity increase. The amount of CO2 absorption in samples was 0.039 (ZIF-8), 0.043 (Cu/ZIF-8), 0.051 (g-C3N4), and 0.12 (g-C3N4@Cu/ZIF-8 (1%)) mmolg−1 respectively. In addition, reusability and stability testing showed that after 5 reuses of the prepared nanocomposite, the degradation efficiency of CO2 photoreduction decreased from 82.1 to 71.8%.

Paper URL