Results 151 to 160 of about 43,948 (300)

Silicone oil–based ferrofluid microrobots for versatile magnetic digital microfluidics

Droplet, EarlyView.
A magneto‐silicobotic system is a magnetic digital microfluidic platform that employs a silicone oil–based ferrofluid droplet as a chemically and biologically inert microrobot for the versatile manipulation of droplets and solid particles. Abstract Magnetic digital microfluidics offers a promising alternative to the dominant electrowetting‐based ...
Pu Liu, Leilei Chen, Yulei Fu, Wendong Wang   +3 more
wiley   +1 more source

Crp and Arc system directly regulate the transcription of NADH dehydrogenase genes in Shewanella oneidensis nitrate and nitrite respiration

Microbiology Spectrum
NADH oxidation by NADH dehydrogenases (NDHs) is crucial for feeding respiratory quinone pool and maintaining the balance of NADH/NAD+. In the respiratory model organism Shewanella oneidensis, which possesses four NDHs, the longstanding notion had been ...
Jia-Rong Liu, Zhi-Qing Wang, Fei-Fei Li, Zhen-Kun Li, Ming-Chen Wang, Na Wang, Yu An, Xiu-Lan Chen, Yu-Zhong Zhang, Hui-Hui Fu   +9 more
doaj   +1 more source

Mixed‐Impurity Co‐Poisoning of NH3‐SCR Catalysts: Poisoning Mechanisms, Antagonistic Effects, and Anti‐Inactivation Strategies

EcoEnergy, EarlyView.
This review summarizes the synergistic effects of mixed impurities on ammonia‐selective catalytic reduction (NH3‐SCR) catalysts, including the poisoning mechanism of the catalyst caused by mixed impurities, the antagonistic effects between the impurities, and the research on the anti‐poisoning strategies for the catalyst in recent years.
Hongyan Xue, Manas Pal, Zhaoteng Xue, Dongsen Mao   +3 more
wiley   +1 more source

A Review of Grain Boundaries: Formation Mechanism, Synthesis Strategy, and Application in Electrocatalysis

EcoEnergy, EarlyView.
An overview of grain boundary engineering in the field of electrocatalysis. ABSTRACT Key electrocatalytic reactions such as HER, OER, ORR, CO2RR, and NRR offer promising routes for storing renewable energy as chemical fuels. However, their widespread application is constrained due to the lack of highly active and stable catalysts. Grain boundaries (GBs)
Jingyu Gao, Fengming Zhou, Xinying Li, Ying Deng, Zexing Wu, Siyuan Feng, Yujing Zhu, Dan Zhang, Zhenyu Xiao   +8 more
wiley   +1 more source

Long-term Effects of Ni(II), Co(II) and Zn(II) Limitation on the Nitrite-oxidation Activity in Continuous Tests Using PVA Gel Carriers

Journal of Water and Environment Technology
Nitrite-oxidizing bacteria (NOB) can be inhibited by high concentrations of heavy metals; however, trace elements (TE) are critical for their growth and sustained activity.
Ryo Hamabe, Yayoi Saito, Takashi Kondo, Mohamed Sheikh Mohamed, Iori Mishima, Kazuichi Isaka   +5 more
doaj   +1 more source

Design of a Novel CeW/Fe‐TiO2 Catalyst With High Oxygen Vacancy for Enhancing the Reactivity and SO2 Resistance in Low‐Temperature NH3‐SCR Reaction

EcoEnergy, EarlyView.
Fe3+ was introduced into the TiO2 lattice using the hydrothermal method, and low‐valent cations replaced part of Ti4+ to generate oxygen vacancies within the Fe‐Ov‐Ti unit, resulting in CeW/Fe‐TiO2 catalysts with oxygen‐deficient structures. Compared with CeW/TiO2 catalyst, the increase in oxygen vacancy content significantly improved the catalytic ...
Yuhang Wang, Xiaosheng Huang, Guodong Zhang, Haitao Zhang, Yongjie Xi, Zhicheng Tang   +5 more
wiley   +1 more source

Recycling Ni‐Rich NCM Cathode Materials From Spent Li‐Ion Batteries as Efficient Electrocatalyst for Urea Oxidation

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Mounting battery waste demands sustainable solutions. We recycle spent NCM cathodes into high‐performance urea oxidation catalysts, enabling sustainable hydrogen production and simultaneous urea waste treatment. The burgeoning electric vehicle industry has intensified the demand for high‐energy Ni‐Co‐Mn (NCM) cathodes, yet their end‐of‐life management ...
Wencheng Su, Chao Wang, Huiyan Zeng, Jianwen Wang, Long Gu, Mengxian Li, Liting Deng, Chi‐Ying Vanessa Li, Chunzhen Yang   +8 more
wiley   +1 more source

Causes and control of low F/M bulking in long sludge age nutrient removal activated sludge systems

, 1993
Includes bibliography.A problem plaguing the greater proportion of nutrient removal activated sludge systems treating municipal sewage, is the prolific growth of :filamentous organisms (bulking), which inhibits the rate of sludge settling in the ...
Casey, Timothy Gervase
core  

Toward a Paradigm Shift in Low‐Temperature SCR Catalyst Design: Defect Engineering and Data‐Driven Integration

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This work systematically reviews the key factors influencing the performance of low‐temperature NH3‐SCR. The mechanism and challenges of defect engineering strategies, such as oxygen vacancies, heteroatom doping, crystal facet exposure, and surface reconstruction, in controlling both activity and selectivity were analyzed.
Rongrong Kan, Pinjing He, Fan Lü, Hua Zhang   +3 more
wiley   +1 more source

Enhanced Urea Oxidation Reaction by Mn‐Doped Nickel Hydroxide From Wastewater

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Mn incorporation modifies the hydroxide structure and modulates the electronic properties of the Ni centers, promoting the formation of catalytically active NiOOH species. Mn dopants induce a favorable electronic effect but do not directly participate in the UOR mechanism, enhancing the overall urea oxidation rate and resulting in increased hydrogen ...
Filippo Bano, Da Chen, Daniele Perilli, Samuele Zambonin, Dario Mosconi, Marco Roverso, Veronica Celorrio, Cristiana Di Valentin, Laura Calvillo   +8 more
wiley   +1 more source