Titanium-based nanocomposite materials: A review of recent advances and perspectives

Shahadat, Mohammad; Teng, Tjoon Tow; Rafatullah, Mohd; Arshad, Mohd Khairuddin

doi:10.1016/j.colsurfb.2014.11.049

Cited by 92 publications

(25 citation statements)

References 141 publications

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“…Heavy metals are of serious concern due to their persistence in the environment and their carcinogenicity toward human beings. Prolonged exposure of heavy metal ions to living beings in the cities was reported by many researchers (Nabi et al 2012b;Nriagu and Pacyma 1988;Schalscha and Ahumada 1998;Shahadat et al 2015). The indiscriminate disposal of untreated industrial effluents into the drains and the discharge of raw effluents through open channels in the cities tend to degrade the aesthetic integrity of the environment (Ayeni 2013;Rahman et al 2015).…”

Section: Introductionmentioning

confidence: 96%

A comparative study of metal contamination in soil using the borehole method

Teh

Rahman

Shahadat

et al. 2016

Environ Monit Assess

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The present study deals with possible contamination of the soil by metal ions which have been affecting the environment. The concentrations of metal ions in 14 borehole samples were studied using the ICP-OES standard method. The degree of contamination was determined on the basis of single element pollution index (SEPI), combined pollution index (CPI), soil enrichment factor (SEF), and geo-accumulation index (Igeo). Geo-accumulation indices and contamination factors indicated moderate to strong contaminations for eight boreholes (BL-1, BL-2, BL-6, BL-8, BL-9, BL-10, BL-12, and BL-13) while the rest were extremely contaminated. Among all the boreholes, BL-3 and BL-11 demonstrated the highest level of Cd(II) and Pb(II) which were found the most polluted sites. The level of metal contamination was also compared with other countries. The development, variation, and limitations regarding the regulations of soil and groundwater contamination can be provided as a helpful guidance for the risk assessment of metal ions in developing countries.

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Section: Introductionmentioning

confidence: 96%

A comparative study of metal contamination in soil using the borehole method

Teh

Rahman

Shahadat

et al. 2016

Environ Monit Assess

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“…In fact, water‐soluble dyes with high dispersion and high stability in water are especially difficult to remove . There are many treatment methods for dyeing wastewater, of which adsorption is one of the most commonly used methods with the selection of suitable adsorbents being the key factor . To date, activated carbon is one of the earliest and most effective adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and surface gel‐adsorption effect of multidimensional cross‐linking cationic cotton for enhancing purification of dyeing wastewater

Song

Sang

2018

J of Chemical Tech & Biotech

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BACKGROUND Dyeing wastewater has caused serious pollution of aquatic environments, and adsorption is one of the most commonly used water‐purification methods with selection of suitable adsorbents being the key factor. These factors motivated us to develop new, more efficient adsorbents to purify dyeing wastewater. RESULTS A surface cross‐linking co‐polymerization of triallylmethylammonium chloride (TAMAC) and grafting cotton with unsaturated bonds (G‐cotton) was designed to obtain multidimensional cationic cotton adsorbent (PT‐cotton) with a high cationic degree of substitution of 0.129. A surface gel‐adsorption effect of the multidimensional cationic construction on cotton surface occurring during PT‐cotton adsorption was discovered resulting in the PT‐cotton having an ultrahigh adsorption capacity for purifying dyeing wastewater. Compared to the untreated cotton, the adsorption capacity of the PT‐cotton was 1344.10 times higher. Compared to the widely used activated carbon, the adsorption capacity of the PT‐cotton was 145.31 times higher, and it was 11.05 and 7.25 times higher, respectively, than that of the similar G‐cotton and polycationic cotton (PF‐cotton) reported in our previous contribution. When PT‐cotton materials were used to fill filter columns, the dye solution flowing through the filter columns immediately became clear, and the dye removal percentage for the PT‐cotton filters reached 96.9%, which was clearly better than that of the activated carbon filter (26.2%). Moreover, the per‐unit amount of water purification from filtering purification of a dye solution using PT‐cotton was 7.02 times higher than that using PF‐cotton. CONCLUSIONS Obtained PT‐cotton has a greater potential for application in the purification of dyeing wastewater than the existing adsorbent materials. © 2018 Society of Chemical Industry

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“…Although such a definition could, in principle, include porous media, colloids, gels and copolymers, more typically means the solid combination of a bulk matrix and nano-dimensional phase(s) differing in chemical composition and in physical chemical properties. The catalytic, optical, mechanical, electrical, thermal, electrochemical properties of the nanocomposite will differ markedly from that of the component materials [22,23]. Also, inorganic-organic hybrid materials play a major role in the development of future oriented advanced functional materials.…”

Section: Introductionmentioning

confidence: 99%