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NiCo O nanowire array on carbon cloth (NiCo O /CC) is proposed as a highly active electrocatalyst for ambient nitrate (NO ) reduction to ammonia (NH ). In 0.1 m NaOH solution with 0.1 m NaNO , such NiCo O /CC achieves a high Faradic efficiency of 99.0% and a large NH yield up to 973.2 µmol h cm . The superior catalytic activity of NiCo O comes from its half-metal feature and optimized adsorption energy due to the existence of Ni in the crystal structure. A Zn-NO battery with NiCo O /CC cathode also shows a record-high battery performance.
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http://dx.doi.org/10.1002/smll.202106961 | DOI Listing |
Chemistry
August 2025
College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China.
Transition metal sulfides have emerged as promising alternatives to precious metal catalysts for sustainable electrocatalytic hydrogen production. However, achieving simultaneous optimization of active site exposure and vacancy-electron interplay remains a critical challenge. Herein, we develop a dual-regulation strategy integrating Fe-doping and high-temperature annealing to synthesize sulfur-deficient Fe-doped CoNiS@CC nanocatalysts (Fe-CoNiS@CC).
View Article and Find Full Text PDFLangmuir
August 2025
State Key Laboratory of Clean and Efficient Coal Utilization, College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, P. R. China.
During thermal regeneration of styrene-saturated activated carbon (AC), styrene's C=C bonds are prone to polycondensation. It forms fixed carbon species that deposit as carbonaceous residues within AC pores, significantly decreasing the adsorption performance. To address this challenge for efficient AC regeneration and recycling, Ni and Co transition metal components were loaded onto AC and subsequently pyrolyzed to generate NiCoO active species.
View Article and Find Full Text PDFSmall
August 2025
College of Material Engineering, Fujian Agriculture and Forestry University, 63 Xiyuangong Road, Fuzhou, 350002, P. R. China.
Nickel-cobalt layered double hydroxides (NiCo-LDHs) are considered highly promising electrode materials for supercapacitors (SCs). Nevertheless, their limited conductivity and inherent stacking defects lead to inactive electronic states, thereby constraining their electrochemical performance. Here, a dual-conductive-engineered flexible electrode is fabricated through synergistic integration of in situ constructed 3D porous LDH with TiCT nanosheets deposition, establishing a semi-confined reaction microenvironment.
View Article and Find Full Text PDFJ Colloid Interface Sci
October 2025
School of Material Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, PR China. Electronic address:
The electrochemical performance of electrode materials plays a pivotal role in determining the practical applicability of flexible supercapacitors, and optimization of material morphology has emerged as an effective strategy to augment these properties. This study presents the preparation of nickel cobalt cobaltite (NiCoO) nano-arrays exhibiting various morphologies, which serve as a support matrix. This is achieved through hydrothermal and annealing treatments applied to the surface of activated carbon cloth (CC).
View Article and Find Full Text PDFJ Environ Manage
May 2025
School of Emergency Management, Xihua University, Chengdu, 610039, China.
The NiCoO (NCOC) and Ni-P (NPC) self-supported anodes were successfully fabricated and utilized in microbial fuel cells (MFCs) for the treatment of actual shale gas flowback wastewater in this study. As a result, the NCOC and NPC displayed outstanding output voltages at 579.1 mV and 537.
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