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Article
Chemistry, Physical
Lukas Dekanovsky et al.
Summary: Light-driven magnetic MXene-based microrobots (MXeBOTs) have been developed for efficient removal and degradation of bisphenol A (BPA). The MXeBOTs utilize embedded Fe2O3 nanoparticles (NPs) for magnetic propulsion and grafted bismuth NPs as cocatalysts. The stability and reusability of MXeBOTs are studied in relation to BPA concentration and chemical composition of the swimming environment.
Article
Chemistry, Physical
Xiujuan Li et al.
Summary: In this study, a dual-propelled asymmetric bowl-like structured PDA@MnO2 nanomotor was developed, which can be propelled by both near-infrared (NIR) light and hydrogen peroxide (H2O2). The nanomotor shows high removal efficiency for Pb2+ and methylene blue (MB) under NIR light irradiation, indicating its potential for the removal of multiple pollutants in complex water environments.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Qi Zhong et al.
Summary: Underwater superoleophobic membranes are a competitive strategy for efficient oil-in-water emulsion separation. The reduction of pore size may decrease the permeating flux of water, while the presence of a large amount of oil phase may block the pore canal, resulting in decreased separation performance. A hydrophobic/hydrophilic structured membrane was fabricated using hexadecyltrimethoxysilane (HDTMS) modified SiO2 (H-SiO2) microparticles on a polydopamine (PDA) hydrophilized polyvinylidene fluoride (PVDF, PDP) membrane. This membrane effectively decreases oil fouling and breaks the trade-off effect between separation efficiency and permeation flux.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Review
Materials Science, Multidisciplinary
Suvendu Kumar Panda et al.
Summary: The sensitive detection of environmental pollutants and bio-analytes is crucial for monitoring environmental and health conditions. However, existing sensor platforms often require complex technology and skilled personnel, limiting their use in low- and middle-income countries. The development of self-propelled micro/nanomotors based on the bubble propulsion mechanism has shown great potential for sensing due to their versatility and enhanced performance. These micro/nanomotors can convert external energy into kinetic energy and achieve complex tasks. In this review, we highlight the progress and challenges in using bubble-propelled micro/nanomotors for the sensitive detection of environmental pollutants and bio-analytes.
MATERIALS ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Hundera Firomesa et al.
Summary: In this study, a solid-phase extraction method using magnetic coffee residue as adsorbent was developed for extraction and determination of TiO2 NPs. The method showed high extraction efficiency, a wide linear range, and good precision and recovery. These results demonstrate the potential of this method for monitoring TiO2 NPs levels in different sample matrices.
Article
Environmental Sciences
Pei-Ling Yen et al.
Summary: This study demonstrates that coffee grounds can effectively remove polystyrene nanoplastic particles from aqueous solutions, with a maximum adsorption efficiency of 74% at a coffee ground concentration of 25 g/L. The Dubinin-Radushkevich model and pseudo-second-order model describe the adsorption isotherm and kinetics well, indicating favorable adsorption at high concentrations.
Review
Environmental Sciences
M. Varsha et al.
Summary: Emerging contaminants, with low concentrations but significant harm, enter the environment daily due to the use of chemical-based products in modern lifestyle. Conventional wastewater treatment methods are inefficient in removing these contaminants, leading to the proposal of using agricultural biomass as a cost-effective alternative for adsorption.
Review
Environmental Sciences
Rania Al-Tohamy et al.
Summary: The synthetic dyes used in the textile industry cause pollution in water bodies, which has negative consequences on the environment and human health. It is important to effectively treat dye-containing wastewater using eco-friendly technologies to reduce contamination of aquatic habitats and natural water resources. This review discusses the effects of textile dyes on water bodies, aquatic flora, and human health, and compares various technologies for removing dyes from textile wastewater.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Thermodynamics
Kuan-Ting Lee et al.
Summary: The new approach of using torrefied spent coffee grounds (TSCG) as a bioadsorbent for marine oil spill recovery shows promising results in terms of increased diesel adsorption capacity and higher heating value. The 300-degree C torrefied TSCG exhibits superior characteristics and has potential applications in environmental protection and resource recycling.
Article
Chemistry, Multidisciplinary
Haoyu Li et al.
Summary: The discharge of oily sewage and frequent oil spills have caused serious harm to human production, life, and the ecological environment. The presence of surfactants in water makes oil-water mixtures form oil-in-water emulsions which are difficult to separate using traditional methods. The oily wastewater containing water-soluble pollutants like dyes and heavy metal ions also poses great harm to human health and the environment. A cost-efficient and environmentally friendly underwater superoleophobic pine nut shell membrane (PNSM) was prepared, which allows the separation of oil-in-water emulsion and adsorption of dyes and heavy metal ions. The PNSM also showed excellent toughness and flexibility, making it a promising candidate for multifunctional oily water remediation.
Article
Chemistry, Multidisciplinary
Ke Wang et al.
Summary: Self-propelled magnetic MnO2@pollen micromotors have been developed as active heterogeneous catalysts for efficient degradation of antibiotics. The micromotors utilize MnO2 nanosheets for propulsion and together with Fe3O4 nanoparticles, activate peroxymonosulfate (PMS) to degrade antibiotics. The self-propulsion and bubble formation enhance fluid mixing and mass transfer, overcoming the diffusion limitation of traditional catalysts. Additionally, the magnetic properties enable long-range magnetic control and reutilization.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Jan Tesar et al.
Summary: This study demonstrates the use of MnO2 microparticles as self-propelled micromotors for the removal of β-estradiol hormone. The micromotors show higher degradation efficiency compared to static MnO2 microparticles. This offers an effective alternative for hormone removal in water purification.
APPLIED MATERIALS TODAY
(2022)
Review
Engineering, Marine
Zunaira Asif et al.
Summary: This paper critically reviews the vulnerability of shorelines to oil spill impact, examines the implications of seasonal variations on oil natural attenuation, and discusses various monitoring techniques and preventive methods to mitigate the effects of oil spills on shorelines.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Review
Environmental Sciences
Sarawut Sangkham et al.
Summary: Microplastics and nanoplastics are emerging environmental pollutants that pose significant ecotoxicological concerns to humans and aquatic animals. However, there is still limited knowledge about the exposure routes and toxic effects of these particles on animal and human health. This review focuses on the potential exposure routes, human health impacts, and toxicity responses of microplastics/nanoplastics, based on studies conducted in vitro and in vivo experiments. It highlights ingestion, inhalation, and dermal contacts as major exposure routes, and identifies oxidative stress, cytotoxicity, DNA damage, inflammation, immune response, neurotoxicity, and metabolic disruption as serious health consequences.
MARINE POLLUTION BULLETIN
(2022)
Article
Engineering, Multidisciplinary
Peter Olusakin Oladoye et al.
Summary: This research review provides a comprehensive overview of methods for treating methylene blue dye wastewater. Chemical removal methods can generate secondary pollutants, while biological methods are sensitive to pH. Adsorption technology is found to be advantageous.
RESULTS IN ENGINEERING
(2022)
Article
Nanoscience & Nanotechnology
Anna Jancik-Prochazkova et al.
Summary: In this study, hydrophobic magnetic hydrogen-bonded organic pigment-based microrobots were used for oil removal. The microrobots could be wirelessly navigated and controlled in a magnetic field. They exhibited swarm-like behavior and successfully navigated oil droplets.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Green & Sustainable Science & Technology
S. H. Chang
Summary: Since the mid-to-late-2000s, the emergence of micro/nanomotors (MNMs) has revolutionized nanotechnology research by providing distinctive autonomous motion and multifunctionality, particularly in the field of metal ion detection and removal from water. This review provides an overview of MNMs for metal ion detection and removal, covering their classification, materials, geometries, fabrication methods, propulsion mechanisms, and performance. The challenges and future prospects of using MNMs on a large scale for water quality monitoring and remediation are also discussed.
MATERIALS TODAY SUSTAINABILITY
(2022)
Review
Nanoscience & Nanotechnology
Sona Hermanova et al.
Summary: The increasing accumulation of non-degradable microplastics in the marine environment is a global environmental problem. Micro- and nanomotors, tiny devices capable of autonomous propulsion, have emerged as a potential solution to this issue. These devices can recognize, capture, and decompose pollutants, making them suitable for removing and degrading soluble organic pollutants and microplastics. Catalytic micromotors that perform photocatalysis and photo-Fenton chemistry show great promise for the degradation of common plastics.
ACS NANOSCIENCE AU
(2022)
Review
Biotechnology & Applied Microbiology
Kevin Johnson et al.
Summary: The development of coffee grounds reuse technologies and policies plays a significant role in achieving sustainable development goals, as it can transform coffee grounds into valuable energy and materials.
FRONTIERS IN CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
M. S. Akindolie et al.
Summary: In this study, activated spent coffee ground (SCG) was used as an adsorbent to enhance the removal efficiency of methylene blue (MB) in aqueous solution. The activated SCG exhibited new functional groups on its surface, increased surface area and mesopore range, and changed structure, which facilitated the adsorption of MB. The adsorption process followed chemisorption and fitted well with PSO and Langmuir models. The maximum adsorption capacity of the activated SCG was 188.68 mg/g. Furthermore, the activated SCG showed excellent performance and high reusability in consecutive uses.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Enhui Ma et al.
Summary: Self-propelled CuS-based micromotors have been developed as active heterogeneous catalysts for efficient photo-Fenton degradation of antibiotics, offering advantages such as easy recycling, absence of secondary pollution risks, and high degradation efficiency. These micromotors achieve efficient degradation through self-induced intensification of mass transfer and microbubble generation, while their dual-stimuli-responsiveness allows for multiple propulsion and guidance modes in different systems. Efficient photothermal effect of CuS enables collective phototactic motion toward light, while magnetic responsiveness facilitates recovery and collection of micromotors.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Engineering, Chemical
Laura Acosta et al.
Summary: This study successfully achieved the adsorptive removal and catalytic decomposition of crude oil using magnetite nanoparticles supported on activated carbon synthesized from spent coffee grounds. The results showed that the adsorption capacity increased when activated carbon was doped with magnetite nanoparticles, leading to a greater efficiency in crude oil removal and decomposition. The process also resulted in the production of gas containing light hydrocarbons and a reduction in polluting species, contributing to greater environmental sustainability.
Review
Geosciences, Multidisciplinary
Tan Suet May Amelia et al.
Summary: Microplastic pollution has environmental and ecological impacts on plants, animals, and humans globally. It acts as a vector for pollutants, particularly in marine ecosystems, leading to bioaccumulation. Further research is needed to understand the potential effects on human health and factors influencing pollutant sorption and bioaccumulation by microplastic.
PROGRESS IN EARTH AND PLANETARY SCIENCE
(2021)
Review
Environmental Sciences
T. D. Minh et al.
Summary: This review focuses on the application of nanomotors and micromotors in oil spill cleanup and recovery, detailing their fundamental concepts and latest advancements. The study examines the behaviors of these nano and micro machines in different water matrices and their roles in oil removal, identifying areas for improvement. Additionally, strategies for surface and structural modification of these tiny machines to enhance their reactivity are discussed, highlighting the importance of customized design.
Review
Environmental Sciences
Thilakshani Atugoda et al.
Summary: Recent studies have shown that hydrophilic compounds such as pharmaceuticals and personal care products (PPCPs) can be adsorbed onto plastic surfaces and coexist with microplastics in the environment.
ENVIRONMENT INTERNATIONAL
(2021)
Article
Chemistry, Physical
Heng Ye et al.
Summary: Simple and scalable fabrication methods for bubble-propelled iron oxides-MnO2 core-shell micromotors show efficient removal of organic pollutants and suspended microplastics, potentially significant for environmental remediation applications.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Guogui Shi et al.
Summary: Waste cardboard, the main component of municipal waste, has led to various environmental problems. A superhydrophobic aerogel has been developed using waste cardboard as the raw material, with excellent oil absorption capacities and a unique porous structure. The aerogel can absorb organic solutions and oil droplets efficiently, showing potential for adsorbing oily wastewater.
Article
Chemistry, Multidisciplinary
Lei Wang et al.
Summary: Micro/nanomotors have significant potential applications in the environmental field, especially in mixing liquid media and removing pollutants. While current research mainly focuses on soluble pollutants, the study of insoluble pollutants, such as microplastics and oil spills, is limited, posing a threat to the environment.
ENVIRONMENTAL SCIENCE-NANO
(2021)
Article
Chemistry, Multidisciplinary
Sevgi Asliyuce Coban et al.
Summary: Heavy metal pollution poses a significant threat to the environment and human health, but can be effectively mitigated through the use of magnetically modified coffee grains. Research indicates that these coffee grains exhibit strong adsorption capacities for heavy metal ions such as Cu(II), Pb(II), Cd(II), and Zn(II).
TURKISH JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Hassan Farhid et al.
Summary: In this study, magnetic spent coffee ground was synthesized and successfully utilized as a catalyst in the aerobic oxidation of primary and secondary benzylic alcohols, as well as in the tandem oxidative Groebke-Blackburn-Bienayme reaction. The material was characterized using various techniques such as X-ray diffraction, thermal gravimetric analysis, scanning electron microscopy, energy-dispersive spectroscopy, inductively coupled plasma optical emission spectrometry, and Fourier transform infrared spectroscopy.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2021)
Article
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Adane Adugna Ayalew et al.
ADSORPTION SCIENCE & TECHNOLOGY
(2020)
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Naeem Hussain et al.
MATERIALS RESEARCH EXPRESS
(2020)
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Multidisciplinary Sciences
Fayrouz Taleb et al.
SCIENTIFIC REPORTS
(2020)
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Mengmeng Sun et al.
APPLIED MATERIALS TODAY
(2020)
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Computer Science, Artificial Intelligence
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NATURE MACHINE INTELLIGENCE
(2020)
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Nanoscience & Nanotechnology
Amit Kumar Singh et al.
ACS APPLIED NANO MATERIALS
(2020)
Review
Materials Science, Multidisciplinary
Stefano Palagi et al.
ADVANCED OPTICAL MATERIALS
(2019)
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Linlin Wang et al.
ACS APPLIED MATERIALS & INTERFACES
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ACS APPLIED BIO MATERIALS
(2019)
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Katherine Villa et al.
CHEMICAL SOCIETY REVIEWS
(2019)
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JOURNAL OF MATERIALS CHEMISTRY A
(2018)
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(2018)
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Li Yu et al.
ARABIAN JOURNAL OF CHEMISTRY
(2017)
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Diana Vilela et al.
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CHEMICAL COMMUNICATIONS
(2016)
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Laurent Bouffier et al.
CURRENT OPINION IN COLLOID & INTERFACE SCIENCE
(2016)
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Bruce Petrie et al.
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Wei Gao et al.
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S. Ebbens et al.
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Aidan Brown et al.
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D. Pujol et al.
INDUSTRIAL CROPS AND PRODUCTS
(2013)
Review
Environmental Sciences
F. J. Cerino-Cordova et al.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2013)
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(2012)
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JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2006)
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WF Paxton et al.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2004)
