Results 31 to 40 of about 6,725 (96)

咪唑啉胍盐缓蚀剂对不锈钢的缓蚀性能研究

open access: yesGongye shui chuli, 2017
研究了咪唑啉胍盐在盐酸介质中对不锈钢的缓蚀性能,并探讨其吸附行为。结果表明,咪唑啉胍盐具有良好的缓蚀性能,缓蚀率随着缓蚀剂浓度的增加而增大。电化学实验结果表明,咪唑啉胍盐是混合型缓蚀剂,等效电路中存在电容和电感。咪唑啉胍盐在不锈钢表面的吸附符合Langmuir吸附等温方程,既包含了物理吸附又包含化学吸附。
张惠欣   +4 more
doaj   +2 more sources

Interstitial Pt–Pd Bimetallic Sites Enable Cooperative Intermediate Regulation for Methanol‐Assisted Hydrogen Generation

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT Methanol‐assisted hydrogen generation reduces energy consumption while maintaining high hydrogen productivity. However, constructing bifunctional catalysts with high hydrogen evolution reaction (HER) activity, CO tolerance, and long‐term stability remains challenging.
Xiaoyu Zheng   +5 more
wiley   +1 more source

Oxygen‐Vacancy‐Enriched Ho/Yb/Sm‐Doped In2O3 With Reconfigured Electronic Structure for Highly Selective Ethylene Glycol Sensing

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT In this work, In2O3 and three rare earth (RE)‐doped In2O3 composites (Ho, Yb, and Sm‐doped) were prepared via the hydrothermal method. Compared with In2O3 sensors, those fabricated from the three composite materials (RE–In2O3) exhibit varying degrees of enhanced response toward ethylene glycol (EG) gas. At 35% relative humidity (RH) and 250°C,
Chang Liu   +9 more
wiley   +1 more source

带结构正电荷的镁铝氢氧化物去除水体中磷的研究

open access: yesGongye shui chuli, 2014
以带结构正电荷的镁铝层状双金属氢氧化物(Mg-Al-LDH)溶胶为吸附剂系统研究了不同因素对磷吸附去除性能的影响,结果表明:其吸附动力学和吸附等温线分别符合准二级、Elovich速率方程和Langmuir方程,理论饱和吸附量可达55.99~60.90 mg/g。吸附过程的ΔG0为-28.78~-20.67 kJ/mol,吸附机理以静电吸引和化学吸附为主导。无机和有机阴离子会抑制磷在吸附剂上的吸附。200 mg/L的Mg-Al-LDH可以吸附90%以上的溶解性反应磷和84%的总磷 ...
谢发之   +5 more
doaj   +2 more sources

Nitrogen–Doped Carbon Nanotube–Supported Ni3Se4–CeO2 Heterojunctions With Multi–Orbital Hybridization for Efficient Hydrogen Evolution Reaction

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Engineering of the catalyst interface and modulation of transition–metal d–band play critical roles in the electrocatalytic hydrogen evolution reaction (HER). Herein, a synthetic strategy is developed to fabricate nitrogen‐doped carbon nanotubes (N–CNTs)–supported Ni3Se4–CeO2 heterojunction catalysts through a facile chemical vapor deposition (
Zhiqiang Sun   +10 more
wiley   +1 more source

La3+ Vacancy Mediated Enhancement of Near‐Infrared Emission in Cr3+‐Activated La2MgTiO6 Phosphors for Multifunctional Applications

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Near‐infrared (NIR) phosphors with broadband and efficient emission are pivotal for the performance of NIR phosphor‐converted light emitting diodes (pc‐LEDs). In this study, the double perovskite phosphor La2MgTiO6:Cr3+ phosphor with broadband emission in the range of 650–950 nm was prepared.
Xu Qian   +7 more
wiley   +1 more source

Synergistic Enhancement of Toluene Catalytic Oxidation via Pt‐Induced Oxygen Vacancies and Heterojunction Built‐In Electric Field

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Improving catalytic activity for volatile organic compounds (VOCs) oxidation and enhancing water‐tolerance stability remain challenging in practical applications. Herein, a composite catalyst integrating Pt/CoOx‐NiOx mesoporous nanorods (MNRs) with a phenyltriethoxysilane (PhTES)‐modified surface was fabricated via a facile route for toluene ...
Jiaqin He   +13 more
wiley   +1 more source

生物炭吸附水中污染物的性能、机理和环境风险

open access: yesGongye shui chuli, 2023
生物炭因其比表面积大、表面官能团丰富和孔隙结构发达等优势在废水处理领域具有广阔的应用前景。未改性生物炭对污染物的吸附性能不理想,可通过改性方式提升其吸附性能。总结了生物炭的制备条件(热解温度、升温速率、保温时间)和改性方法(酸/碱改性、老化改性、有机物改性、纳米材料改性、蒸汽改性和球磨改性)对生物炭吸附去除污染物的影响。概括了生物炭对重金属离子和有机污染物的吸附机理,其中生物炭吸附去除重金属离子的相互作用包括静电吸附、离子交换、物理吸附、表面络合、共沉淀等,而吸附去除有机污染物的相互作用包括孔隙填充 ...
臧金秋   +8 more
doaj   +2 more sources

Synergizing Multi‐Chemisorption Sites and Micropore Confinement in Porous Carbon for High‐Performance Zinc‐Ion Hybrid Capacitors

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Aqueous zinc‐ion hybrid capacitors (ZICs) bridge the gap between high‐energy batteries and high‐power supercapacitors, yet their performance is fundamentally bottlenecked by the micropore confinement effect in carbon cathodes, which restricts hydrated Zn2+ transport and active site utilization.
Qian Li   +12 more
wiley   +1 more source

Dual‐Phosphidation‐Engineered Ni/NiO Heterojunction Nanoflowers With Synergistic Surface PO43− Group and P Doping Sites for High‐Performance and Low Temperature (−40°C) Supercapacitors

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Nickel oxide (NiO)‐based electrodes with high theoretical specific capacitance can effectively increase the energy density of supercapacitors—the key factor limiting their practical deployment. However, several issues still restrict the production of advanced NiO‐based electrodes.
Ya‐Min Feng   +10 more
wiley   +1 more source

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