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http://dx.doi.org/10.1021/jacs.5c06025 | DOI Listing |
Nature
September 2025
Monterey Bay Aquarium Research Institute, Moss Landing, CA, USA.
Small
September 2025
State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, Ningxia, 750021, P. R. China.
Electrochemical CO reduction (CORR) to carbon monoxide (CO) offers a sustainable pathway for carbon utilization, yet challenges remain in terms of improving selectivity and activity. Herein, we report a Ni/NC catalyst synthesized via a milling - pyrolysis method, in which Ni particles anchored on nitrogen-doped carbon (NC) are electrochemically activated under an Ar atmosphere, leading to their structural evolution into single-atom Ni sites. After activation in Ar atmosphere, the current density nearly doubles (from ≈30 to ≈60 mA cm), and concurrently, the Faradaic efficiency of CO stays at ∼90% with the potential set to -0.
View Article and Find Full Text PDFJ Am Chem Soc
September 2025
Hunan Joint International Research Center for Carbon Dioxide Resource Utilization, School of Physics, Central South University, Changsha, Hunan 410083, China.
Single-atom Ni catalysts hold great promise for the acidic CO reduction reaction (CORR), owing to their high CO selectivity. However, their performance under industrially relevant high current conditions is limited by the weak interaction between isolated Ni-N sites and *COOH intermediates, restricting efficient CO conversion. Here, we introduced edge-rich Ni-N sites via support vacancy engineering to enhance *COOH adsorption, thereby boosting the CORR activity and selectivity in acidic media.
View Article and Find Full Text PDFRev Sci Instrum
September 2025
National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan.
In this work, we developed a vacuum-compatible long trace profiler (LTP) for in situ metrology of ultra-precise x-ray optics within synchrotron vacuum chambers. Although traditional LTPs operate ex situ under atmospheric pressure, earlier optical setups-such as that by Qian et al.-performed in situ distortion measurements by directing laser beams through vacuum viewports.
View Article and Find Full Text PDFJ Clin Orthop Trauma
November 2025
Department of Orthopaedics, All India Institute of Medical Sciences, Bhubaneshwar, 751019, India.
Severe rigid scoliosis presents formidable surgical challenges, even for the most seasoned spine surgeons. Patients with idiopathic scoliosis frequently exhibit severe manifestations after years of progressive deformity, characterised by pronounced curves, significant rib humps, shoulder and trunk asymmetry, and cardiorespiratory complications associated with untreated scoliosis. In our practice, around one-third of patients with scoliosis present with advanced, severe, rigid scoliosis (>90° and 25 % correction on bending radiographs).
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