Results 61 to 70 of about 1,032,779 (227)

AD–OX: A sequential oxidative process for water treatment— Adsorption and batch CWAO regeneration of activated carbon [PDF]

, 2009
A sequential process for water treatment involving usual adsorption on activated carbon (AC) followed by wet air catalytic oxidation of the adsorbed pollutants has been carried out in a fixed bed reactor with a mixture of two model pollutants.
Creanga-Manole, Carmen, Wilhelm, Anne-Marie, Julcour-Lebigue, Carine, Delmas, Henri, A.-M. Wilhelm, H. Delmas, C. Creanga, C. Julcour-Lebigue   +7 more
core   +1 more source

Advances and Perspectives in Graphene‐Based Quantum Dots Enabled Neuromorphic Devices

Advanced Science, EarlyView.
Graphene‐based QDs are zero‐dimensional carbon nanomaterials with pronounced quantum confinement and tunable electronic structures. Herein, we summarize their synthesis strategies and functionalization methods, and highlight their functional roles and operating mechanisms in devices, as well as recent advances in neuromorphic electronics. We anticipate
Yulin Zhen, Wei Zeng, Zherui Zhao, JiYu Zhao, Ziyan Huang, Zhuo Chen, Kui Zhou, Guanglong Ding, Su‐Ting Han, Ye Zhou   +9 more
wiley   +1 more source

Waste–to–waste valorization: Sustainable palladium recovery from real spent catalytic converter leachates using chicken feathers

Waste Management
The increasing demand for platinum group metals (PGM), mainly driven by their extensive use in automotive catalytic converters, has heightened the need for efficient and green recovery methods. Simultaneously, the poultry industry generates significant amounts of keratin-rich chicken feathers (CF), which are commonly disposed of by incineration or ...
Amir Nobahar, Flavia N. Braga, Filipe H.B. Sosa, Nicolas Schaeffer, João A.P. Coutinho, Helena Passos   +5 more
openaire   +2 more sources

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks

Advanced Science, EarlyView.
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley   +1 more source

A Versatile‐Designable Framework for Active and Programmable Shape‐Morphing Soft Matter Systems: From Inverse Design to Closed‐Loop Control

Advanced Science, EarlyView.
A versatile framework integrates addressable electrothermal actuation and strain‐constraint mechanisms to construct programmable shape‐morphing soft matter systems. By combining an analytical inverse design strategy for high‐fidelity 3D surface reconstruction with deep learning‐based closed‐loop control, this approach enables zero‐energy shape locking,
Kai Liu, Peiling Xie, Ruitong Song, Banghan Liu, Rui Guo, Jiu‐an Lv   +5 more
wiley   +1 more source

Conceptual design analysis of a collection and processing system for scrapped catalytic converters

, 2010
The systems engineering process has been applied to develop and evaluate a system that collects and processes scrapped catalytic converters to recover the platinum group metals retained by the converters' spent catalyst substrate.
Kuczka, Allan Anthony
core  

NANOMATERIALS FOR CATALYTIC CONVERTERS: IMPROVING AIR QUALITY THROUGH INNOVATION

Air pollution remains a critical global issue, largely due to emissions from vehicles. Catalytic converters play a vital role in reducing harmful pollutants, but their efficiency can be improved through innovative materials. Nanomaterials have emerged as
Nisreen Al Sayid, Riko Kobayashi, Haruto Takahashi   +2 more
core   +1 more source

ZrCo3B2 and HfCo3B2 Electrodes Go on Stage for Oxygen Evolution Reaction

Advanced Science, EarlyView.
The intermetallic compounds ZrCo3B2 and HfCo3B2 with distinctive chemical bonding features are excellent OER precursors, restructuring into OER‐active electrocatalysts delivering significantly high OER activities compared to the elemental Co, which is obvious from their lower onset potentials and increased obtained current densities.
Fatma Aras, Ulrich Burkhardt, Simone G. Altendorf, Yuri Grin, Iryna Antonyshyn   +4 more
wiley   +1 more source

Leaching of Platinum Group Metals from Spent Automotive Catalytic Converters Using Deep Eutectic Solvents: A Review

Purification
Platinum group metals (PGMs), platinum (Pt), palladium (Pd) and rhodium (Rh), are critical for automotive emission control, chemical manufacturing and emerging energy technologies, yet their supply is limited and geographically concentrated. Their designation as critical raw materials (CRMs) in the EU has intensified recycling efforts, especially from ...
Stylianos Spathariotis, Eirini Zagoraiou, Anastasia-Maria Moschovi, Ekaterini Polyzou, Iakovos Yakoumis   +4 more
openaire   +1 more source

Strong Metal‐Support Interaction Driven Janus Reconstruction in PtRu Alloys for Low‐Temperature Hydrogen Storage

Advanced Science, EarlyView.
Strong metal‐support interactions (SMSI) drive the spontaneous segregation of RuPt alloy into Janus nanoparticles on CeO2, spatially partitioning Pt‐rich domains for H2 dissociation and Ru‐rich domains for toluene adsorption. This Janus nanocatalysts yield a turnover frequency of 10 906 h−1 for toluene hydrogenation at 50 °C, which is 6.7 times that of
Xingyu Zhang, Haiqiang Bai, Wenbin Li, You Wang, Yunhua Xu, Sai Zhang   +5 more
wiley   +1 more source