Recent advances on water disinfection using bismuth based modified photocatalysts: Strategies and challenges

Kumar, Rohit; Raizada, Pankaj; Verma, Narinder; Hosseini-Bandegharaei, Ahmad; Thakur, Vijay Kumar; Le, Quyet Van; Nguyen, Van‐Huy; Rangabhashiyam, S.; Singh, Pardeep

doi:10.1016/j.jclepro.2021.126617

Cited by 165 publications

(38 citation statements)

References 95 publications

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“…Nanofiltration is an innovative process that currently gives us one of the most important components of life-water. The expansion of human activities has made it necessary to develop more and more advanced and selective methods to remove salts from water or organic micropollutants [80][81][82][83][84]. Large areas of the planet currently depend on desalination processes to have drinking water, and large industries to purify water or residual solvents-the pharmaceutical or dye industry being among the largest consumers of nanofiltration membranes.…”

Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

Graphene-based composite membranes for nanofiltration: performances and future perspectives

Voicu

Thakur

2021

emergent mater.

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Nanofiltration is one of the most widely used membrane processes for water purification with high practical value because of a large number of chemical species that are separated through this process. Usually, for nanofiltration, high energy–consuming operations are involved including the generation of enough pressure for the rejection of jumps and lower molecular weight chemicals at the surface of the membrane. Recent developments in the synthesis of nanocomposite membranes with graphene and graphene derivatives have led to an increase in energy requirements and the increase in membranes performances. In the present review, we have presented the recent advances in the field of graphene-based composite membranes for nanofiltration with applications for both types of based solvents—aqueous solutions and organic solvents. The presentation will be focused especially on the performances of membranes and applications of these materials for the rejection of salts (Na+, Mg2+), heavy metals (Li2+), and lower molecular weight organic compounds (methylene blue, Congo red, Direct Red, Methyl orange, Reactive green 13, etc.). Modern synthesis methods like interfacial polymerization for obtaining thin-film composite nanofiltration membranes are also presented.

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Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

Graphene-based composite membranes for nanofiltration: performances and future perspectives

Voicu

Thakur

2021

emergent mater.

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“…Furthermore, most bismuth-based photocatalysts are stable, reusable, photoactive, cheaper, and more environmentally friendly that other alternatives. Besides, due to some shortcomings of the pristine photocatalysts, such as charge carrier recombination, slow migration of charge carriers, and low visible light absorption [72,73], we discuss modification of graphene with bismuth species to produce improved photocatalysts for practical applications.…”

Section: Introductionmentioning

confidence: 99%

Bismuth-Graphene Nanohybrids: Synthesis, Reaction Mechanisms, and Photocatalytic Applications—A Review

et al. 2021

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Photocatalysis is a classical solution to energy conversion and environmental pollution control problems. In photocatalysis, the development and exploration of new visible light catalysts and their synthesis and modification strategies are crucial. It is also essential to understand the mechanism of these reactions in the various reaction media. Recently, bismuth and graphene’s unique geometrical and electronic properties have attracted considerable attention in photocatalysis. This review summarizes bismuth-graphene nanohybrids’ synthetic processes with various design considerations, fundamental mechanisms of action, heterogeneous photocatalysis, benefits, and challenges. Some key applications in energy conversion and environmental pollution control are discussed, such as CO2 reduction, water splitting, pollutant degradation, disinfection, and organic transformations. The detailed perspective of bismuth-graphene nanohybrids’ applications in various research fields presented herein should be of equal interest to academic and industrial scientists.

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“…The entrapment of NPs into nanosensors also enhances the rapid detecting ability of the portable device. NPs, portable devices, nanotubes, nanowires, and nanomechanical devices are typical examples of functional probes for the detection and disinfection of pathogens and other contaminants in different mediums [65][66][67].…”

Section: Introductionmentioning

confidence: 99%

Nanomaterials in the Management of Gram-Negative Bacterial Infections

et al. 2021

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The exploration of multiplexed bacterial virulence factors is a major problem in the early stages of Escherichia coli infection therapy. Traditional methods for detecting Escherichia coli (E. coli), such as serological experiments, immunoassays, polymerase chain reaction, and isothermal microcalorimetry have some drawbacks. As a result, detecting E. coli in a timely, cost-effective, and sensitive manner is critical for various areas of human safety and health. Intelligent devices based on nanotechnology are paving the way for fast and early detection of E. coli at the point of care. Due to their specific optical, magnetic, and electrical capabilities, nanostructures can play an important role in bacterial sensors. Another one of the applications involved use of nanomaterials in fighting microbial infections, including E. coli mediated infections. Various types of nanomaterials, either used directly as an antibacterial agent such as metallic nanoparticles (NPs) (silver, gold, zinc, etc.), or as a nanocarrier to deliver and target the antibiotic to the E. coli and its infected area. Among different types, polymeric NPs, lipidic nanocarriers, metallic nanocarriers, nanomicelles, nanoemulsion/ nanosuspension, dendrimers, graphene, etc. proved to be effective vehicles to deliver the drug in a controlled fashion at the targeted site with lower off-site drug leakage and side effects.

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Recent advances on water disinfection using bismuth based modified photocatalysts: Strategies and challenges

Cited by 165 publications

References 95 publications

Graphene-based composite membranes for nanofiltration: performances and future perspectives

Graphene-based composite membranes for nanofiltration: performances and future perspectives

Bismuth-Graphene Nanohybrids: Synthesis, Reaction Mechanisms, and Photocatalytic Applications—A Review

Nanomaterials in the Management of Gram-Negative Bacterial Infections

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