Marzia Sultana, Mahbub Hasan Rownok, Meherunnesa Sabrin, Md. Hafezur Rahaman et al.
Effective and low-cost removal of dye and heavy metals from wastewater still is a great challenge for researchers. Adsorption using activated carbon is widely used in removing these toxic pollutants. Physical, chemical, and biological modifications have been studied for improving activated carbon ad...
Md. Hafezur Rahaman, Md Ataul Islam, Md. Monjurul Islam, Md. Aminur Rahman et al.
Chromium (Cr), Lead (Pb) and Cadmium (Cd) have been conceded as one of the most perilous heavy metals which causes a prominent affliction on both environment and human health. In this study, chemical modification of biodegradable, eco-friendly materials such as cellulose and chitosan were carried ou...
Marzia Sultana, Atol Mondal, Sumon Islam, Most. Afroza Khatun et al.
This review article discusses the potential of using metal-doped TiO2 as a photocatalyst for dye degradation in water. TiO2 is a promising photocatalyst but is limited due to its fast electron-hole recombination rate and vast bandgap energy. Metal dopants have enhanced the photocatalytic activity of...
Md. Hafezur Rahaman, Md. Rakibul Islam, Rafiquel Islam, S. Alam et al.
This study attempted to develop a low-cost and eco-friendly bio-based composite adsorbent that is highly efficient in capturing potential toxic metals. The bio-composite adsorbent was prepared using graphene oxide, chitosan and carboxymethyl cellulose and characterized using FTIR, SEM-EDX and WAXD t...
Md. Aminur Rahman, Md. Hafezur Rahaman
Safe water is essential for life. Consumption of arsenic and manganese contaminated water poses a range of health effects to humans. Physico-chemical and bacteriological characteristics of groundwater at five administrative upazillas in Kushtia District, Bangladesh, have been studied to evaluate the...
Kamrun Nahar, Md. Hafezur Rahaman, G. M. Arifuzzaman Khan, Md Khairul Islam et al.
In this research study, we reported a convenient and environmentally friendly method for the green synthesis of silver nanoparticles using Citrus sinensis (navel orange) peel. The synthesized silver nanoparticles were identified by colour change from colourless to dark brown due to surface plasmon r...
Md. Hafezur Rahaman, Md. Masud Rana, Mohammad Abdul Gafur, Anika Amir Mohona
ABSTRACT α‐Cellulose extracted from jute fiber was grafted with oligo( d ‐lactic acid) (ODLA) via a graft polycondensation reaction in the presence of para ‐toluene sulfonic acid and potassium persulfate in toluene at 130 °C for 9 h under 380 mmHg. ODLA was synthesized by the ring‐opening polymeriza...
Md. Hafezur Rahaman, Md. Anamul Haque, Md. Aminur Rahman, Md. Masud Rana et al.
Oligo(L-lactic acid) (OLLA) was synthesized by ring opening polymerization of L-lactides using stannous octoate (0.03 wt% of lactide). While this served as the initiator, L-lactic acids were the co-initiators at 140 °C for 10 h, wherein L-lactic acids were prepared by hydrolytic degradation of L-lac...
Atol Mondal, Sumon Islam, SK. Methela Zaman, Marzia Sultana et al.
Research continues to improve the dye degradation performance of TiO 2 nanoparticles (NPs) through doping, tailoring, or modifying the lattice structure. A series of Ca–TiO 2 (Ca ions 0.5–2.0 wt%) photocatalysts prepared by wet impregnation method were studied for methylene blue (MB) degradation und...
Md. Hafezur Rahaman, Sagor Hosen, M. A. Gafur, Rasel Habib
Stereocomplexation is utilized to improve and control the mechanical and thermal properties of poly(lactic acid) (PLA) where enantiomeric polymers poly(l-lactic acid) (PLLA) and poly(d-lactic acid) (PDLA) form stereocomplexation. This research reports the effects of minor amounts of PDLA on the prop...
Mir Ferdous Chowdhury, Mst Umme Khaer Habiba Khanum, Md. Aminur Rahman, Mohammad Mahmudur Rahman et al.
Developing efficient and eco-friendly adsorbents for removing dye from wastewater presents a significant challenge. In this study, by combining MgFe-hydrotalcite (MgFe-HT) with bamboo charcoal (BC) we report the synthesis of a composite material named BC-MgFe-HT to achieve rapid and effective adsorp...
Marzia Sultana, Md. Raju Ahmmed, Md Inzamam Ul Hoque, Tanvir Ebna Mohsen et al.
Biodegradable and eco-friendly composite adsorbent was synthesized from modified jute fiber and gelatin and evaluated its efficacy in removing cadmium (Cd2+), lead (Pb2+), and chromium (Cr3+) ions from an aqueous solution. The prepared sample was characterized using Fourier transform infrared spectr...
G. M. Arifuzzaman Khan, Md. Sabbir Hasan, Md. Hafezur Rahaman, Allahrakha Aydid et al.
Anika Amir Mohana, Md. Aminur Rahman, Md. Hafezur Rahaman, Mohd. Maniruzzaman et al.
Water pollution by contaminants such as toxic metals and dyes is now a major concern due to their high toxicity and persistence in the environment. Advances in nanotechnology have enabled the use of micro/nanomaterials to treat and purify water in various industries. In this study, Bijoypur clay was...
Md. Masud Rana, Md. Hafezur Rahaman, G. M. Arifuzzaman Khan, Md. Saddam Hossain et al.
Abstract L ‐ and D ‐ form oligo(lactic acid)s (OLLA and ODLA) grafted α‐cellulose (OLLA‐g‐cellulose and ODLA‐g‐cellulose) were prepared by the graft polycondensation reaction in C 6 H 5 CH 3 medium at 130°C and 380 mm of mercury pressure. Para‐toluene sulphonic acid (5 wt% of oligo(lactic acid)) was...