Results 11 to 20 of about 55,752 (142)
Gongye shui chuli, 2011 制备了Ag+、Cu2+、Fe3+掺杂及Ag+-Fe3+共掺杂、Cu2+ Fe3+共掺杂的TiO2光催化剂，用其处理粉煤制气工艺的氨氮废水。结果表明：单金属离子掺杂时Fe3+掺杂TiO2的催化活性最高，在紫外光照射4 h、温度30 ℃、通气量为0.25 m3/h 的条件下，Fe3+的最优掺杂量（Fe3+与TiO2的质量比）为0.001%，其氨氮去除率为76.4%。共掺杂的最优组合为Ag+-Fe3+，其中Ag+为0.05%，Fe3+为0.001%，氨氮去除率为78.92%。
孙业涛 +4 more
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Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Lignin hydrogenolysis is a promising route to separable aromatic monomers, yet practical upgrading is still hindered by macromolecular mass‐transfer limitations and the aggregation/deactivation of metal sites. Herein, we propose a “dual‐confinement” strategy to construct ultrafine Ru nanoclusters supported on lignin‐based N‐doped hierarchical ...
Tianjin Li +11 more
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Gongye shui chuli, 2013 以钛酸四丁酯、硝酸铋和尿素为原料,采用溶胶-凝胶法制备了不同掺杂量的铋和氮的单掺杂及共掺杂TiO2光催化剂。以活性黑KN-B为模拟染料废水考察了所制备TiO2的光催化性能,研究了染料光催化降解的影响因素。结果表明,铋和氮共掺杂TiO2比TiO2及单掺杂TiO2的光催化活性要高。当Bi0.5N8.0/TiO2的投加量为4.0 g/L,活性黑KN-B初始质量浓度为40 mg/L,pH为2.23,在125 W汞灯下光照20 min时,活性黑KN-B的降解率接近99.9 ...
姜聚慧, 梁宁, 宋世理, 郭颖
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Unveiling Entropy‐Driven Hard‐Tough Synergy Mechanisms in High‐Entropy Carbonitride Ceramics
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT High‐entropy ceramics manifested promise for extreme environments, yet their phase stability and mechanical synergy mechanisms remain elusive. Herein, entropy‐difference carbonitrides, including (TaTiV)CN, (TaTiVNb)CN, and (TaTiVNbHf)CN, were designed and consolidated via spark plasma sintering.
Long Zhao +6 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT A facile coprecipitation‐pyrolysis strategy was employed to fabricate Cu/Co nanoparticles (NPs) embedded in nitrogen‐doped carbon matrices (Cu/Co@N‐C) through the carbonization of CuCo‐MOF precursors. Moreover, monometallic counterparts of Cu@N‐C and Co@N‐C were also prepared via carbonization of bimetallic CuZn‐MOF and CoZn‐MOF, respectively.
Weinan Yao +7 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The commercialization of lithium–sulfur batteries (Li–S batteries) has been hindered by the shuttle effect of lithium polysulfides (LiPSs) and sluggish redox kinetics. In this study, we constructed a three‐dimensional hollow conductive network host material for sulfur with synergistic enhancement effects.
Jie Yang +6 more
wiley +1 more source
Gongye shui chuli, 2016 以尿素为氮源，采用溶胶凝胶法制备N掺杂TiO2，然后与钨酸铵混合研磨，通过高温焙烧的方法原位制备WO3复合N掺杂TiO2的异质节光催化材料。分别采用X射线衍射（XRD）、紫外-可见分光光度计（UV-Vis）对样品进行分析，考察样品的光吸收阈值变化。以亚甲基蓝为降解底物，考察了样品的可见光催化处理染料废水效果，结果表明，原位制备的WO3和N掺杂TiO2异质节光催化材料对亚甲基蓝表现出良好的可见光催化活性。
王丽, 赵辉
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Enhanced Magnetocaloric Effect in Tb‐Co‐Ni Magnets via Chemical Pressure
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Magnetic refrigeration materials are significantly needed in versatile modern industries, including scientific research, aerospace, and health care, due to their potential applications in gas liquefaction and storage. Herein, a significantly enhanced magnetocaloric effect with a suitable operation temperature range of 53–114 K and a giant ...
Lei Xi +11 more
wiley +1 more source
Gongye shui chuli, 2023 对氮化碳（C3N4）进行氮掺杂碳纳米管（N-Ct）修饰，形成的氮掺杂碳纳米管/氮化碳（N-Ct/C3N4）复合材料的光催化活性明显提高。在可见光条件下，复合材料对罗丹明B（RhB）有较好的降解效果，其中5%N-Ct/C3N4（理论N-Ct质量分数为5%）在2 h内对RhB的降解率可达99.0%，相应的TOC去除率为59.0%，降解性能最为卓越且显著高于普通C3N4材料。利用X射线衍射、光电子能谱、紫外-可见光吸收光谱等多元表征手段对复合材料进行理化性质表征和理论计算，结果表明，经N-Ct修饰后 ...
孙寒
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Rare 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
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