Results 21 to 30 of about 997,977 (169)
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Size‐controllable Sn nanoparticles are designed in this work via oxide doping to be uniformly embedded into flexible N‐doped carbon nanofibers, in which the agglomeration and migration of Sn are effectively restrained due to the suppressive effect of selected oxides, including SiO2, TiO2, and ZnO. Benefiting from unique merits of the embedment
Yu Xin +6 more
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Environmental pollution across water, air, and soil systems poses escalating threats to human health and ecosystem stability, driven by heavy metals, persistent organic pollutants, particulate matter (PM), bioaerosols, and toxic gases. Conventional remediation technologies often suffer from limited selectivity, insufficient efficiency, and the
Junjie Qi +6 more
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Zhongguo shiyan zhenduanxue, 2007 目的制备中等粒径葡聚糖超顺磁性氧化铁纳米颗粒,评估其作为一种新型的磁共振对比剂可行性。方法采用化学共沉淀法制作葡聚糖超顺磁性氧化铁纳米颗粒,通过凝胶色谱分离葡聚糖超顺磁性氧化铁纳米颗粒,用透射电子显微镜、粒度分析仪、X射线衍射和磁力计对葡聚糖超顺磁性氧化铁纳米颗粒进行表征分析。结果粒度分析仪与电子显微镜检测结果表明,目的粒子均匀一致,葡聚糖超顺磁性氧化铁纳米颗粒核心直径在35-41 nm之间,平均粒径40 nm。磁力仪检测结果显示,磁化曲线无磁滞现象,表现为超顺磁性,矫顽力为零,饱和磁化强度为23KA ...
丁军, 赵继红, 李祎, 杨海山
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Photocatalytic hydrogen evolution technology is a crucial approach to achieve efficient solar energy conversion and green hydrogen production. However, traditional semiconductor photocatalysts often face issues such as weak visible‐light response, high photogenerated charge carrier recombination, and poor structural stability, severely ...
Longtao Guo +8 more
wiley +1 more source
Gongye shui chuli, 2023 采用厌氧-好氧间歇运行模式，在SBR反应器中分别以丙酸钠、乙酸钠、葡萄糖、蔗糖为单一碳源对生物除磷颗粒污泥进行培养驯化，并考察不同碳源下除磷颗粒污泥对水中磷的去除效果，同时结合高通量测序，探究不同碳源驯化的生物除磷颗粒污泥中微生物种群结构的变化情况。结果证明：碳源为丙酸钠时，系统对磷的去除效果最佳。高通量测序结果表明：碳源对除磷颗粒污泥的微生物种群结构影响显著，以丙酸钠为碳源的颗粒污泥中聚磷菌（PAOs）占比最高；以乙酸钠为碳源的颗粒污泥聚糖菌（GAOs）占比最高；以蔗糖为碳源的颗粒污泥PAOs含量最低，
相延铮, 何成达, 朱腾义, 何瑜
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Soft‐magnetic materials (SMMs) are indispensable for electrification and sustainable energy systems, yet their inherent mechanical fragility fundamentally limits applications under severe mechanical stresses. Enhancing the yield strength of SMMs is essential to prevent the degradation in magnetic performance and failure from plastic ...
Nairan Wang +6 more
wiley +1 more source
Gongye shui chuli, 2018 采用在絮状好氧污泥中短期投加聚合氯化铁（PFC）的方式来加速污泥的颗粒化进程，考察了期间颗粒污泥的形态特征和对主要污染物的去除效果。投加PFC后，反应器内的污泥在第35天实现了完全颗粒化，比对照组提前了10 d，并拥有更高的污泥浓度和更好的沉降性能。在颗粒完全成熟后，加药组对COD、NH4+-N的平均去除率分别达到97.8%、76.5%，分别比对照组高出3.3%、5.5%，说明铁盐对好氧污泥的颗粒化进程具有明显强化作用。
王悦灵, 高湘, 刘强
doaj
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Bismuth anode materials are considered promising anode candidates for sodium–ion batteries (SIBs) due to their high theoretical capacity and appropriate working potential. Nevertheless, the significant volume expansion that occurs during the cycling process restricts its broader application in sodium–ion storage. Herein, Bi/Bi2O3 nanoparticles
Jiaju Lu +3 more
wiley +1 more source
Gongye shui chuli, 2014 在SBR反应器中驯化培养好氧颗粒污泥。考察颗粒污泥物理性能变化和有机物降解效果，研究好氧颗粒污泥在低浓度有机废水中的适应性。实验结果表明，污泥颗粒化进程快，反应器运行第14天时，出现粒径为3~6 mm，表面光滑有光泽的颗粒污泥，对COD的去除率保持在85%以上；降低COD后，NH3-N、TP的去除率分别为74%和90%；系统对甲醇有去除作用但效果不理想，最终去除率只达到24.28%。
赵霞 +4 more
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Gongye shui chuli, 2021 建立2个反应器（R0、R1）培养好氧颗粒污泥，并通过向R1投加生物质炭促进颗粒污泥的形成。结果表明：投加1.5 g/L的生物质炭可加速颗粒化进程，在第11天形成以生物质炭作为晶核的颗粒污泥；与R0相比，R1中的颗粒污泥结构更致密、表面更光滑。然而生物质炭的投加对反应器性能无明显影响：2个反应器的COD和总氮去除率都可达到95%和65%以上；在一个反应周期内反应器中均无NO3--N和NO2--N积累，表明2个反应器均实现了同步硝化反硝化脱氮。
郑焕焕, 李海松
doaj