Recent advancements and challenges in the catalytic purification of volatile organic compounds
With the development of industrialization, the emissions of volatile organic compounds (VOCs) are steadily increasing, posing a significant risk to atmospheric quality and public health.
Photocatalytic NO removal: complete oxidation and reduction reaction for by-product inhibition and end-product recovery
Photocatalysis is an eco-friendly and cost-effective method to realize the purification of ppb-level NO, and the end-product (nitrate/ammonia) of the photocatalytic NO complete oxidation/reduction reaction can be further recycled.
Nano-dry-salt deposition on electret nonwoven confers anticoronaviral effect while retaining aerosol filtration performance
Direct deposition of nano-dry-salt on nonwovens was developed as a process that can be incorporated into conventional nonwoven production for timely application of biosafe anticoronaviral surfaces and reliable aerosol filtration performance.
Scaling-up CO2-selective graphene oxide membranes via sequential coating with gelated graphene oxide and polyethyleneimine for CO2 separation
Increased adhesion between GO layer and substrate by PDA, PEI sequential coating and CO2 affinity due to secondary PEI coating.
Identifying active sites of Co3O4 catalysts for C2H2 oxidation using combined computational and experimental methods
Combined computational and experimental studies are carried out to unravel the role of active centers on C2H2 oxidation over Co3O4 catalysts.
A new mechanism for visible light photocatalysis: generation of intraband by adsorbed organic compounds with wide-bandgap semiconductors
A novel mechanism has been revealed by the study that the adsorption of VOC molecules on the surface of semiconductors formed midgap states between the ground state of the VOCs and the conduction band of the semiconductor.
Zeolite-like ion-exchanged Cu-attapulgite catalysts for promoted selective oxidation of ammonia
Zeolite-like ion-exchanged Cu-attapulgite catalysts have been developed for selective catalytic oxidation of ammonia.
Interfacial catalytic degradation mechanism of n-hexane over polyhedral Co3O4 nanocatalysts derived from topotactic condensation of ZIF-67
A progressive transition from the L–H model to MvK model is observed, where a polyhedral Co3O4 nanocatalyst enabled by topotactic condensation of ZIF-67 is synthesized for catalytic degradation of n-hexane.
Constructing a core–shell Pt@MnOx/SiO2 catalyst for benzene catalytic combustion with excellent SO2 resistance: new insights into active sites
The construction of a core–shell Pt@MnOx/SiO2 protective structure catalyst can protect the active Pt site well from SO2 toxicity.
Nylon fabric coated with a silver nanowire network covered by graphene oxide sheets serves as an electrostatic air filter for highly efficient particulate matter removal
The network of silver nanowires coated with graphene oxide sheets, which are deposited on nylon fabric, will offer valuable information pertaining to the development of an electrostatic air filter for solving air pollution.
The heterogeneous reactions of toluene/O3/NH3 on hematite nanoparticles: the impact of light illumination on organic ammonium salt formation
The intensity of light illumination played an important role in the formation of organic ammonium salts on nano-hematite.
Efficient and stable CF4 decomposition over θ-Al2O3 with extraordinary resistance to HF
Regulating Al2O3 to θ phase is an effective method for enhancing the stability of CF4 decomposition.
Experimental and DFT investigations on adsorption–regeneration performance and deactivation mechanism over engineered carbon fiber: role of pore structure and functional groups
Technology based on adsorption of porous carbon is a promising and cost-effective strategy for the recovery of high-value volatile organic compounds (VOCs) or removal of worthless VOCs.
Pure metallic nanofibrillar membrane for high-performance electrostatic air filtration with antimicrobial and reusable characteristics
We introduce a metallic high-efficiency particulate air (HEPA) filter based on a Cu nanofiber membrane, which grasps particulate matters physically and electrostatically. The filter also shows excellent antimicrobial property and reusability.
The role of cationic defects in boosted lattice oxygen activation during toluene total oxidation over nano-structured CoMnOx spinel
This study firstly revealed that toluene oxidation activity can be considerably improved by cationic defects rather than oxygen defects over nano-structured CoMnOx.
Catalytic oxidation of formaldehyde over a Au@Co3O4 nanocomposite catalyst enhanced by visible light: moisture indispensability and reaction mechanism
A Au@Co3O4 core–shell nanocomposite was prepared for the mineralization of formaldehyde under dark conditions and visible-light irradiation. The Au@Co3O4 core–shell nanocomposite has significantly promoted the photocatalytic formaldehyde oxidation.
Catalytic activity, water resistance and stability of hematite nanomaterials in oxidative removal of polychlorinated aromatic hydrocarbons can be simultaneously enhanced through facet engineering
Catalytic activity, water resistance and stability of hematite nanomaterials in oxidative removal of polychlorinated aromatic hydrocarbons can be simultaneously enhanced through facet engineering.
Raspberry-like TiO2 hollow spheres consisting of small nanocrystals towards efficient NO removal
Raspberry-like hollow spheres consisting of small TiO2 nanocrystals exhibited excellent photocatalytic activity for the removal of nitrogen oxides.
Heterogeneous reaction of toluene/NO2/O3 on α-Fe2O3 nanoparticles: the impacts of O3, light illumination, and relative humidity on the formation of N-containing organic compounds (NOC)
Light illumination can enhance the NOC formation from heterogeneous processes of toluene whereas water cannot.
Paper
Characterization of nano-scale mineral dust aerosols in snow by single particle inductively coupled plasma mass spectrometry
Mineral dust aerosols in snow were analyzed by single particle ICP-MS with machine learning to classify particle groups.
Significant impacts of NO2 and NH3 on the sulfate formations on the surface of nano MgO particles in a smog chamber
NO2 played an important positive or negative role in SO2 heterogeneous reactions, however, NH3 always exerted significant positive impacts on SO2 heterogeneous reactions in the three reaction systems of SO2–MgO-dark, SO2–MgO-hν and SO2–MgO–O3.
Constructing active copper species in Cu-zeolites for coal-gas-SCR and elucidating the synergistic catalytic function of CuO and Cu2+ ion species
Cu-ZSM-5-IE+CP exhibited excellent catalytic performance as a result of the synergistic effect between CuO and Cu2+ species.
Gas-phase photoelectrocatalytic oxidation of volatile organic compounds using defective WO3/TiO2 nanotubes mesh
A ducted GPEC reactor equipped with defective WO3/TiO2 nanotube photoelectrodes was developed for VOC removal. Applying a tiny bias voltage promoted rapid carrier transfer and inhibited the recombination of carriers trapped by the bulk OVs.
SO2-Tolerant catalytic reduction of NOx by confining active species in TiO2 nanotubes
SO2-Tolerant catalytic reduction of NOx was demonstrated by confining active species in TiO2 nanotubes.
Near-infrared light induced adsorption–desorption cycle for VOC recovery by integration of metal–organic frameworks with graphene oxide nanosheets
A photodynamic GO@MIL-101 adsorbent was presented by growing several isolated MIL-101 nanoparticles onto GO nanosheets, which was able to realize the complete desorption of VOCs within 60 min under UV-vis-NIR light irradiation.
Antagonistic role of Al3+ against PM2.5-induced neurotoxicity via suppression of NADPH oxidase-triggered oxidative stress
The relationship between PM2.5 compositions and neuron toxicity was explored and Al3+ was revealed to be antagonistic to other pollutants by decreasing the combined toxic effects.
A theoretical perspective on the structure and thermodynamics of secondary organic aerosols from toluene: molecular hierarchical synergistic effects
The molecular hierarchical synergistic effects of toluene photooxidation are elucidated to explain the formation mechanism of secondary organic aerosols.
The photocatalytic NO-removal activity of g-C3N4 significantly enhanced by the synergistic effect of Pd0 nanoparticles and N vacancies
Pd0 and N vacancy co-modified g-C3N4 displayed excellent NO-removal activity.
Identification and quantification of anthropogenic nanomaterials in urban rain and runoff using single particle-inductively coupled plasma-time of flight-mass spectrometry
Urban rain and runoff are potential sources of anthropogenic nanomaterials (engineered and incidental, ENMs and INMs) to receiving waterbodies.
About this collection
This web collection includes research articles published in Environmental Science: Nano featuring applications of nanoparticles in air as well as studies of the effects of nanoparticles and particulate matter on air and respiration.