| 1. |
Bharti Arora, Rohit Bhatia, Pankaj Attri, Bionanocomposites
Green materials for a sustainable future, Elsevier Inc., 10.1016/B978-0-12-811033-1.00027-5, 699-712, 2018.02, The word "green" refers to those materials that are "renewable" as well as "biodegradable" and thus can be exploited for issues related to the environment and sustainability. Bionanocomposites are an important class of hybrid materials, comprised of biopolymers and inorganic solids. They exhibit at least one dimension on the nanometer scale. Such biodegradable materials prove to be invaluable gifts to present and future generations thanks to modern science and technology. Natural polymers, which are preferred from an environmental standpoint, including starch, poly-lactic acid (PLA), cellulose acetate, etc. have been widely used in the past few years. Optically transparent plasticized PLA-based bionanocomposite films have been utilized for packaging in the food industry. Artificial bone tissue scaffolds based on natural hybrids of cellulose acetate (CA) and nano-hydroxyapatite (n-HA) have been used to study in vitro bone regeneration. However, the search for and development of new and economical materials for greener requirements has been a dynamic process.. |
| 2. |
Bharti Arora, Ji Hoon Park, Eun Ha Choi, Pankaj Attri, Sol-gel-based bioceramics
From materials to medicine, Pan Stanford Publishing Pte. Ltd., 10.1201/9781315163598, 431-442, 2018.01, The progress of nanotechnology has opened the path for the development of new biomaterials. Recent developments have demonstrated that sol-gel bioceramics play an important role in the biomedical field due to their superior biological and mechanical properties. A bioactive hydroxyapatite (HA) is a common bioceramic that attaches to living tissues in vivo at body temperature. Sol-gel processes are now being used to produce bioactive coatings, powders, and substrates that can facilitate control over biological behavior of proteins and cells with broad clinical applications. It has been found that HA particles can down-regulate the expression of some cancerogenic genes in 432tumor cells. The nano-HA particles from the biodegradation of HA ceramics could penetrate the membranes of tumor cells. A rapid and economic sol-gel method has been designed to synthesize sodium silicate (Na 2 SiO 3 ) into silica gel in large quantities. Sol-gel-based bioceramics have the potential to present unexpected excellent biological functions. Thus, the understanding and control of the interactions between bioceramics and biological entities may play one of the leading roles in the development of nanomedicine.. |
| 3. |
Rohit Bhatia, Seema Garg, Pankaj Attri, Sol-gel-based synthesis of metal oxide nanoparticles for air and water purification, Pan Stanford Publishing Pte. Ltd., 10.1201/9781315163598, 275-302, 2018.01, According to the World Health Organization (WHO), water and air pollution constitutes about 23%-30% of the global burden of disease in the present-day society. It estimates that nearly 7 million people die due to outdoor air pollution every year, whereas indoor air pollution (owing to households cooking over coal, wood, and biomass stoves) can be linked to approximately 4.3 million deaths in 2012. Similarly, WHO estimates that polluted water accounts for almost 1.5 million deaths per year, including 0.36 million deaths of children below 5 years of age in the developing countries. Hence, there is an urgent need for developing 276techniques that could tone down the air and water pollution levels so as to improve the quality of life. In recent years, various metal oxide nanoparticles, attributed with unique physical and chemical properties, have emerged as a choice of technology to remove various types of pollutants from air and water. In this chapter, we will discuss the synthesis of various metal oxide nanoparticles using the sol-gel methodology and their application in the removal of various types of air and water pollutants.. |
| 4. |
Pankaj Attri, Influence of Atmospheric Pressure Plasma on Biomolecules, Nova Science Publishers, Inc., 2016.07. |
| 5. |
Pankaj Attri, Black but Gold: Carbon nanomaterials for wastewater purification, Smithers Rapra Technology, 1, 2016.06. |
| 6. |
Pankaj Attri, Cellulose: A Smart Material for Water Purification, Wiley-Scrivener Publisher, USA, 2016.02. |
| 7. |
Rohit Bhatia, Bharti Arora, Jitender Gaur, Eun Ha Choi, Pankaj Attri, Utility of bentonite composite for wastewater treatment, Nova Science Publishers, Inc., 137-150, 2015.04, One of the major sources, which wastes the environment is the wastewater produced from the human activity due to enhanced discharge of toxic and persistent organic pollutants into the fresh water sources like rivers etc. Ground and surface waters contain, generally, impurities including organic pollutants such as pesticides, polychlorinated biphenyls (PCBs), halogenated organic solvents and polycyclic aromatic hydrocarbons (PAHs), discharged from industrial and wastewater treatment plants affect their appearance and may have adverse effects for consumers. Presence of large colloidal particle leads to clogging of filtering devices which increases cost of water purification. Bentonite is a kind of low-cost and easily obtained clay mineral. Dominant clay minerals in bentonites are smectites such as montmorillonite, beidellite, saponite, nontronite and hectronite. Natural Bentonite is effective adsorbent for cations but it shows lower affinity towards negative groups, like phosphate, due to the absence of reactive adsorption sites for anions in water. Bentonite clay can treat oil, sulfate, phosphate and is extremely effective at removing certain cationic components from wastewater and has a remarkable affinity for metals, particularly heavy metals in solution.. |
| 8. |
Pankaj Attri, Nanoparticles for the Water Purification, Jenny Stanford Publishing, 2014.12. |
| 9. |
Pankaj Attri, Bharti Arora, Rohit Bhatia, P. Venkatesu, Eun Ha Choi, Plasma Technology
A New Remediation for Water Purification with or without Nanoparticles, Wiley-Blackwell, 10.1002/9781118939314.ch4, 9781118496305, 63-77, 2014.06, One of the most serious problems facing billions of people today is the availability of fresh water. The conventional water recycling methods like chemical oxidation processes and advanced oxidation processes (AOP) are eff ective but have problems such as high cost, secondary pollution and production of chlorinated species. To overcome these problems nanoparticles are increasingly used. The conventional methods of nanoparticle production usually requires a long time and have a high cost, which render them ineff ective for large-scale production of nanoparticles. Nanoparticle production using the plasma technique overcomes these shortcomings. Additionally, the plasma itself acts as a perfect method for water purification due to the formation of various reactive chemical species such as radicals (OH·, H·, O·, HO
2
·) and molecular species (H
2
O
2
, H
2
, O
2
). Hence, the use of the combined action of nanoparticles and plasma is a new method for solving water treatment problems.. |
