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Photo-oxidation of Micro-and Nanoplastics: Physical, Chemical, and Biological Effects in Environments

Xu, Yanghui (author), Ou, Q. (author), van der Hoek, J.P. (author), Liu, G. (author), Lompe, K.M. (author)

Micro- and nanoplastics (MNPs) are attracting increasing attention due to their persistence and potential ecological risks. This review critically summarizes the effects of photo-oxidation on the physical, chemical, and biological behaviors of MNPs in aquatic and terrestrial environments. The core of this paper explores how photo-oxidation...

review 2024

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Adsorption characteristics and mechanisms of water-soluble polymers (PVP and PEG) on kaolin and montmorillonite minerals

Wang, Xintu (author), Xu, Yanghui (author), Ou, Q. (author), Chen, Wenwen (author), van der Meer, W.G.J. (author), Liu, G. (author)

The excessive use and accumulation of water-soluble polymers (WSPs, known as “liquid plastics”) in the environment can pose potential risks to both ecosystems and human health, but the environmental fate of WSPs remains unclear. Here, the adsorption behavior of WSPs with different molecular weight on kaolinite (Kaol) and montmorillonite (Mt)...

journal article 2024

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Social acceptance of district heating: evidence from the Netherlands

Onencan, A. M. (author), Ou, J. (author), de Koning, J.I.J.C. (author)

The Netherlands Climate Change Agreement aims to reduce CO₂ emissions and seismic events by halting natural gas usage by 2050. This will require widespread societal acceptance by 90% of households. The study investigates the social acceptance of a district heating network (DHN) among social housing tenants in Haarlem, Netherlands....

journal article 2024

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Generalized Model and Deep Reinforcement Learning-Based Evolutionary Method for Multitype Satellite Observation Scheduling

Song, Yanjie (author), Ou, Junwei (author), Pedrycz, Witold (author), Suganthan, Ponnuthurai Nagaratnam (author), Wang, X. (author), Xing, Lining (author), Zhang, Yue (author)

Multitype satellite observation, including optical observation satellites, synthetic aperture radar (SAR) satellites, and electromagnetic satellites, has become an important direction in integrated satellite applications due to its ability to cope with various complex situations. In the multitype satellite observation scheduling problem ...

journal article 2024

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Appearance of Recalcitrant Dissolved Black Carbon and Dissolved Organic Sulfur in River Waters Following Wildfire Events

Xu, Yanghui (author), Wang, Xintu (author), Ou, Q. (author), Zhou, Zhongbo (author), van der Hoek, J.P. (author), Liu, G. (author)

Increasing wildfire frequency, a consequence of global climate change, releases incomplete combustion byproducts such as aquatic pyrogenic dissolved organic matter (DOM) and black carbon (DBC) into waters, posing a threat to water security. In August 2022, a series of severe wildfires occurred in Chongqing, China. Samples from seven locations...

journal article 2024

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Cationic Effects on Photo- and X-ray Radioluminescence of K₃RE(PO₄)₂:Ce³⁺/Pr³⁺ (RE = La, Gd, and Y) Phosphors toward X-ray Detection

Ou, Yiyi (author), Zhou, Weijie (author), Dorenbos, P. (author), Liang, Hongbin (author)

Cationic tuning for lanthanide (Ce³⁺/Pr³⁺)-activated inorganic phosphors with stable, efficient, and fast-decay 5d-4f emissions has emerged as an important strategy toward the continuing pursuit of superior scintillators. The in-depth understanding of the cationic effects on photo- and radioluminescence of lanthanides Ce...

journal article 2023

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Transitioning Together, sparking change towards the energy transition: A handbook on Social Contagion

de Koning, J.I.J.C. (author), van Dam, S.S. (author), Boele, Charlotte (author), Buskens, Vincent (author), Chan, Josephine (author), Onencan, Abby (author), Ou, Jiamin (author), Van de Rijt, Arnout (author), Shah, Jesal (author), Schneider, Philip (author), Visser, Rose (author)

Having directly observed one of the most rapidly spreading global pandemics, we understand more than ever the power of contagion. In today’s interconnected world, trends originating in one corner, whether it’s a disease, clothing fashion, or an online social media challenge, can swiftly gain momentum on the opposite side of the globe, often...

book 2023

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Stochastic-priority-integrated signal coordination considering connected bus operation uncertainties

Ou, S. (author), An, Kun (author), Ma, Wanjing (author), Hegyi, A. (author), van Arem, B. (author)

Multimodal arterial signal coordination for buses and passenger vehicles can improve arterial travel smoothness and efficiency. However, uncertainty in bus operations requires signal priority at intersections, which impacts coordination and increases stop times for other traffic types. Therefore, this study proposes a stochastic priority...

journal article 2023

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Assessing the Mass Concentration of Microplastics and Nanoplastics in Wastewater Treatment Plants by Pyrolysis Gas Chromatography-Mass Spectrometry

Xu, Yanghui (author), Ou, Q. (author), Wang, Xintu (author), Hou, Feng (author), Li, Peng (author), van der Hoek, J.P. (author), Liu, G. (author)

The level of microplastics (MPs) in wastewater treatment plants (WWTPs) has been well evaluated by the particle number, while the mass concentration of MPs and especially nanoplastics (NPs) remains unclear. In this study, pyrolysis gas chromatography-mass spectrometry was used to determine the mass concentrations of MPs and NPs with different...

journal article 2023

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Combined effects of photoaging and natural organic matter on the colloidal stability of nanoplastics in aquatic environments

Xu, Yanghui (author), Ou, Q. (author), Li, Xiaoming (author), Wang, Xintu (author), van der Hoek, J.P. (author), Liu, Gang (author)

The transport and fate of nanoplastics (NPs) in aquatic environments are closely associated with their colloidal stability, which is affected by aging and natural organic matter (NOM) adsorption. This study systematically investigated the combined effects of photoaging and NOM (e.g. humic acids, HA; and a model protein, bovine serum albumin, BSA...

journal article 2022

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Fundamental study of nonclassical nucleation mechanisms in iron

Ou, X. (author), Sietsma, J. (author), Santofimia, Maria Jesus (author)

Nucleation is the re-arrangement of a small number of atoms in the structure of a material leading to a new phase. According to the classical nucleation theory, a nucleus will grow if there is an energetically favourable balance between the stability of the newly formed structure and the energy costs associated to the formation of strains and...

journal article 2022

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Crystal structures and magnetic properties of Fe_1.93-xCo_xP_1-ySi_y compounds

Bao, L. L. (author), Yibole, H. (author), Xu, J. (author), Ou, Z. Q. (author), Haschuluu, O. (author), Tegus, O. (author), van Dijk, N.H. (author), Brück, E.H. (author), Guillou, F. (author)

In view of the interest that (Fe,Co)₂(P,Si) compounds have as potential permanent magnets, their structural and magnetic phase diagrams are explored focusing on establishing the range where the hexagonal Fe₂P-type structure is observed. In Fe_1.93-xCo_xP_1-ySi_y, the highest Si...

journal article 2022

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Nanomechanical Characteristics of Interfacial Transition Zone in Nano-Engineered Concrete

Wang, Xinyue (author), Dong, Sufen (author), Li, Z. (author), Han, Baoguo (author), Ou, Jinping (author)

This study investigates the effects of nanofillers on the interfacial transition zone (ITZ) between aggregate and cement paste by using nanoindentation and statistical nanoindentation techniques. Moreover, the underlying mechanisms are revealed through micromechanical modeling. The nanoindentation results indicate that incorporating...

journal article 2022

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Contribution of extracellular polymeric substances fractions to the adsorption of silver nanoparticles by activated sludge

Xu, Yanghui (author), Ou, Qin (author), He, Qiang (author), Wu, Zhengsong (author), Ma, Jun (author), Huangfu, Xiaoliu (author)

The extracellular polymeric substances (EPS) from activated sludge played significant roles in the removal of nanoparticles from wastewater. A series of batch experiments were carried out to determine the adsorption mechanism of three nano-Ag by activated sludge, as well as the contributions of EPS fractions including dissolved EPS (DEPS),...

journal article 2022

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Experimental and Theoretical Studies of the Site Occupancy and Luminescence of Ce³⁺in LiSr₄(BO₃)₃for Potential X-ray Detecting Applications

Yang, Yunlin (author), Lou, Bibo (author), Ou, Yiyi (author), Su, Fang (author), Ma, Chong Geng (author), Duan, Chang Kui (author), Dorenbos, P. (author), Liang, Hongbin (author)

Ce3+-doped LiSr4(BO3)3 phosphors have been prepared by a high-temperature solid-state reaction method, and structural refinement of the host compound has been performed. The excitation and emission spectra in the vacuum ultraviolet-ultraviolet-visible range at cryogenic temperatures reveal that Ce3+ ions preferentially occupy eight...

journal article 2022

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VUV-UV-vis photoluminescence, X-ray radioluminescence and energy transfer dynamics of Ce³⁺ and Eu²⁺ in Sr₂MgSi₂O₇

Wen, Donghao (author), Li, Quanfeng (author), Ou, Yiyi (author), Yang, Yunlin (author), Qi, Zeming (author), Dorenbos, P. (author), Liang, Hongbin (author)

Ce³⁺ and Eu²⁺ doped and Ce³⁺-Eu²⁺ co-doped Sr₂MgSi₂O₇ phosphors are prepared via a high-temperature solid-state reaction technique. The synchrotron radiation vacuum ultraviolet-ultraviolet (VUV-UV) excitation and ultraviolet-visible (UV-vis) emission spectra of...

journal article 2022

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Exploring the potential of nano-SiO2 to prevent early-age frost damage in Portland cement paste

Bai, Shuai (author), Guan, Xinchun (author), Li, Hui (author), Ou, Jinping (author)

The purpose of this study is to explore the potential of nano-SiO2 (NS) to prevent early frost damage, and the effect of nano-SiO2 (NS) on cement pastes subjected to early-age freezing was investigated regarding the macro properties (strength and durability) and micro properties (hydration and microstructure). The specimens were prepared with NS...

conference paper 2021

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Identification and Quantification of Nanoplastics in Surface Water and Groundwater by Pyrolysis Gas Chromatography-Mass Spectrometry

Xu, Yanghui (author), Ou, Q. (author), Jiao, Meng (author), Liu, G. (author), van der Hoek, J.P. (author)

Nanoplastics (NPs) are currently considered an environmental pollutant of concern, but the actual extent of NP pollution in environmental water bodies remains unclear and there is not enough quantitative data to conduct proper risk assessments. In this study, a pretreatment method combining ultrafiltration (UF, 100 kDa) with hydrogen peroxide...

journal article 2021

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Site Occupancies, VUV-UV-vis Photoluminescence, and X-ray Radioluminescence of Eu²⁺-Doped RbBaPO₄

Zhou, Rongfu (author), Ma, Fengkai (author), Su, Fang (author), Ou, Yiyi (author), Qi, Zeming (author), Zhang, Jianhui (author), Huang, Yan (author), Dorenbos, P. (author), Liang, Hongbin (author)

RbBaPO4:Eu2+ phosphors have been prepared by a high-temperature solid-state reaction method, and the structure was determined by Rietveld refinement based on powder X-ray diffraction (P-XRD) data. Their VUV-UV-vis photoluminescence properties are systematically investigated with three objectives: (1) based on low-temperature spectra, we...

journal article 2020

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Coalescence of martensite under uniaxial tension of iron crystallites by atomistic simulations

Ou, X. (author), Sietsma, J. (author), Santofimia, Maria Jesus (author)

Molecular dynamics simulations are used to study the effects of tensile loading on nucleation and subsequent growth of bcc phase in pure fcc iron. The results show that orientation variant selection occurs during the stress-induced fcc-to-bcc transformation, which leads to the coalescence of neighbouring bcc platelets with identical...

journal article 2020