Results 61 to 70 of about 4,722 (253)

Electrochemical [4+2] and [2+2] Cycloaddition for the Efficient Synthesis of Six- and Four-Membered Carbocycles

Molecules
An efficient and sustainable electrochemical method for [4+2] and [2+2] cycloadditions has been developed, enabling the facile synthesis of six- and four-membered carbocycles.
Runsen Xu, Fang Wang, Yifan Shen, Zhenhua Wang, Yanzhong Zhen, Ziwei Gao   +5 more
doaj   +1 more source

Omnidirectional Ultra‐Broadband Cu/TiO2 Metasurface Absorbers for High‐Efficiency Solar Thermal Conversion and Photothermal Plasmon‐Driven Catalysis

Advanced Optical Materials, EarlyView.
Metasurface shows selective solar–thermal energy conversion with high‐activity solar/laser‐driven chemistry. The breakthrough is co‐designing broadband FP‐cavity + plasmonic LSPR/SLR resonances in an ultra‐thin metamaterial so that it not only harvests the most efficient proportion of solar radiation but also suppresses mid and IR emissivity. Moreover,
Samira Mehrabi, HaoYu Zhang, Narendra Chaulagain, Edgar Acosta, Nazir P. Kherani   +4 more
wiley   +1 more source

Smart Nanotechnologies for Multimodal Neuromodulation and Brain Interfacing

Advanced Science, EarlyView.
Recent advances in smart nanotechnologies are expanding the toolbox for brain interfacing, from wireless neuromodulation and high‐resolution sensing to targeted delivery within the central nervous system. By combining responsive nanomaterials with bioinspired design, these platforms enable multimodal interactions with neurons and glia, while also ...
Tommaso Curiale, Marie Celine Lefevre, Alessio Carmignani, Maria Cristina Ceccarelli, Matteo Battaglini, Attilio Marino, Gianni Ciofani   +6 more
wiley   +1 more source

Photochemical and ozone-induced aging significantly alter the viscosity of aqueous trans-aconitic acid aerosol particles [PDF]

Atmospheric Chemistry and Physics
Aging processes of organic aerosols, including reactions with gas phase oxidants, such as ozone (O3), as well as photochemical reactions, can significantly alter their physicochemical properties.
C. Antossian, M. Müller, M. Müller, U. K. Krieger   +3 more
doaj   +1 more source

Surface Fermi Level Modulation of Photoanode by Optimized Conducting Nanoparticle Heterointerfaces for Enhanced Photoelectrochemical Water Splitting

Advanced Science, EarlyView.
Optimizing the heterointerface coverage of the conducting Ni2P nanoparticles on the surface of BVO photoanode manipulates the surface Fermi‐level modulation, which significantly enhances photoelectrochemical oxygen evolution reaction. Our multiscale simulations and experimental results reveal that an optimal Ni2P coverage of 9.4% pins the surface Fermi
Phuong Thi Pham, Seulgi Ji, Unbeom Baeck, Yuankai Li, Duong Nguyen Nguyen, Won Tae Hong, Yang You, John Moraros, Kyoungsuk Jin, Jun Young Lee, Chan‐Hwa Chung, Tae‐Hoon Kim, Jongwook Park, Heechae Choi, Jung Kyu Kim   +14 more
wiley   +1 more source

Complex interplay between transboundary ozone and domestic emissions shapes surface ozone pollution in China

npj Climate and Atmospheric Science
Background ozone (O3), defined as O3 originating from transboundary transport and domestic natural precursors, has traditionally been viewed as largely unresponsive to domestic anthropogenic emissions, representing an uncontrollable baseline for a nation’
Wei Tao, Tzung-May Fu, Junfeng Liu, Hang Su, Yafang Cheng, Ruijing Ni, Aoxing Zhang, Yixin Guo, Tianci Jiang, Jiajia Mo, Xiaolin Wang, Huizhong Shen, Min Shao   +12 more
doaj   +1 more source

Near‐Unity Selectivity Inversion Between CO2 Electroreduction and H2 Evolution via Atomic Coordination Editing

Advanced Science, EarlyView.
Atomic coordination editing functions as an on/off switch that toggles single‐atom catalysts between CO2 electroreduction and hydrogen evolution. ABSTRACT Precise atomic coordination editing of single‐atom catalysts (SACs) provides an effective strategy to tune their electronic structures and catalytic selectivity. Yet, achieving near‐unity selectivity
Yukun Zhao, Yuanyuan He, Mengyu Duan, Peng Yin, Jinxing Chen, Xu Han, Jie Yang, Yulin Wang, Xingjie Fu, Shibo Xi, Chuncheng Chen, Jiong Lu   +11 more
wiley   +1 more source

Intrinsically Mitochondria‐Targeting Nanozyme via Coordination‐Assembly of Natural Quercetin for Cascade Antioxidant Therapy of Cerebral Ischemia‐Reperfusion Injury

Advanced Science, EarlyView.
This study uncovers that quercetin naturally targets mitochondria. By coordinating quercetin with Fe3+, we engineer an ultrasmall cascade nanozyme (MCN) with superoxide dismutase‐catalase activities. MCN crosses the damaged blood–brain barrier, scavenges mitochondrial ROS, prevents mitochondrial DNA leakage, and blocks the cGAS‐STING pathway, thereby ...
Wenxuan Zheng, Zhicheng Wang, Xin Zhou, Shuya Wang, Xiaojing Shi, Tingli Xiong, Ruishi Li, Yuting Lin, Zhen Chen, Jiawen Wei, Fei Li, Jinwen Ge, Kelong Ai, Chong Liu, Guiming Deng   +14 more
wiley   +1 more source

Epidemiologic Basis for Photochemical Oxidant Standard [PDF]

Environmental Health Perspectives, 1983
The problem of photochemical oxidant pollution, 98% of which is ozone, is addressed. Ozone itself is not the cause of all adverse effects (e.g., peroxyacetyl nitrites cause eye irritation). The typical sequence in the development of oxidant pollution is an initial increase in nitrous oxide, followed by nitrogen dioxide, followed by ozone.
openaire   +3 more sources

Efficient Concentration and Complete Destruction of Short‐Chain and Emerging PFAS in Contaminated Water via Integrated Interface Engineering‐Enhanced Carbon Felt Sorption and Photochemical Processes

Advanced Science, EarlyView.
A closed‐loop “Concentrate‐Destroy” strategy is presented for completely eliminating short‐chain and emerging PFAS, in which the new 3D PPy@P‐CF is used for efficiently concentrating PFAS and Cu2+‐mediated photodegradation is applied for the completely destroying PFAS in the sorbent regeneration eluent.
Hao Yu, Jialei Guo, Peng Zhang, Hongyi Li, Feng He, Hongwen Sun   +5 more
wiley   +1 more source