Utilization of layered double hydroxides (LDHs) and their derivatives as photocatalysts for degradation of organic pollutants

Direct or indirect discharge of wastes containing organic pollutants have contributed to the environmental pollution globally. Decontamination of highly polluted natural resources such as water using an effective treatment is a great challenge for public health and environmental protection. Photodeg...

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Bibliographic Details
Published in:Environmental science and pollution research international 2021-11, Vol.28 (42), p.59551-59569
Main Authors: Bobde, Prakash, Patel, Ravi Kumar, Panchal, Deepak, Sharma, Abhishek, Sharma, Amit Kumar, Dhodapkar, Rita S., Pal, Sukdeb
Format: Article
Language:English
Subjects:
Adsorption
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Decontamination
Earth and Environmental Science
Ecotoxicology
Efficiency
Environment
Environmental Chemistry
Environmental Health
Environmental Pollutants
Environmental protection
Environmental science
Hydroxides
Natural resources
Photocatalysis
Photocatalysts
Photodegradation
Photolysis
Pollutants
Public health
Review Article
Stability
Waste Water Technology
Water Management
Water Pollutants, Chemical
Water Pollution Control
Water purification
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Summary:Direct or indirect discharge of wastes containing organic pollutants have contributed to the environmental pollution globally. Decontamination of highly polluted natural resources such as water using an effective treatment is a great challenge for public health and environmental protection. Photodegradation of organic pollutants using efficient photocatalyst has attracted extensive interest due to their stability, effectiveness towards degradation efficiency, energy, and cost efficiency. Among various photocatalysts, layered double hydroxides (LDHs) and their derivatives have shown great potential towards photodegradation of organic pollutants. Herein, we review the mechanism, key factors, and performance of LDHs and their derivatives for the photodegradation of organic pollutants. LDH-based photocatalysts are classified into three different categories namely unmodified LDHs, modified LDHs, and calcined LDHs. Each LDH category is reviewed separately in terms of their photodegradation efficiency and kinetics of degradation. In addition, the effect of photocatalyst dose, pH, and initial concentration of pollutant as well as photocatalytic mechanisms are also summarized. Lastly, the stability and reusability of different photocatalysts are discussed. Challenges related to modeling the LDHs and its derivatives are addressed in order to improve their functional capacity. Graphical abstract
ISSN:0944-1344
1614-7499
1614-7499
DOI:10.1007/s11356-021-16296-x