Results 31 to 40 of about 29,855 (152)
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT NiFe‐based MIL‐55 metal‐organic frameworks (MOFs) face challenges in achieving atomically precise composition and reliable methods for uniform growth. This study addresses these challenges by applying a slow evaporation crystallization technique to crude colloidal MIL‐55 products from hydrothermal synthesis, resulting in highly uniform ...
H. R. Haris +10 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The polyanionic compound Na3V2(PO4)3 (NVP) has emerged as a competitive cathode material for sodium‐ion batteries (SIBs), owing to its high‐voltage redox activity (3.4 V vs. the Na+/Na reference couple) and NASICON‐type framework that enables superior ionic conductivity.
Xiaolei Wu +5 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The similar physicochemical properties of alkali metal elements make the co‐enrichment and precise separation of Cs+ and Rb+ in complex brine systems highly challenging. Here, an all‐inorganic strategy is proposed, which achieves efficient enrichment and precise separation of Cs+ and Rb+ in high‐salt systems by constructing Sr2+/Ba2+‐based ...
Kang Li, Ruixin Ma, Shina Li
wiley +1 more source
非均相沉淀法制备Ba_3MgSi_2O_8:Eu~(2+),Mn~(2+)荧光粉 [PDF]
, 2011 用非均相沉淀法首次合成了名义化学式为Ba2.88MgSi2O8:0.02Eu2+,0.1Mn2+的Eu2+、Mn2+共掺杂Ba3MgSi2O8荧光粉。用XRD、SEM和荧光光谱进行表征,并与相同条件下用高温固相法合成的荧光粉作对比。研究沉淀反应温度、金属离子浓度对非均相沉淀法制备荧光粉相纯度和发光性能的影响。结果表明:相对于高温固相法,非均相沉淀法可在更低的温度下合成相纯度高的荧光粉,且粉末颗粒呈近球状,粒径均匀,粉末基本无团聚;沉淀反应温度为40℃,在此温度下,金属离子溶液滴加完毕后,继续搅拌2h ...
刘晓兰, 曾人杰, 陈毅彬
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Gongye shui chuli, 2008 针对钠离子交换树脂再生过程排放的高含盐废水，研究了沉淀法的脱盐效果。比较了不同沉淀剂复配的处理效果，筛选出适于处理高浓度含盐废水的药剂HJ-C/B并进行了分步沉淀实验。结果表明：该法对钙离子去除率可达100%，镁离子去除率为99%以上。分离出沉淀后的澄清液可回用于树脂再生过程，其中氯离子(Cl~-)回用率为77%。该法不仅可大大减少高浓度含盐废水的排放，而且节约部分工业盐，并可回收纯度较高的沉淀。
郭春梅, 陈进富
doaj +2 more sources
Gongye shui chuli竖流沉淀依靠絮体自然沉淀和悬浮区拥挤沉淀实现固液分离，适度絮凝能充分发挥二者的协同作用，降低药剂投加量，提高沉淀效果。为了明确悬浮区的作用，开展了连续流竖流沉淀试验，考察测试不同工况下絮体的形态、悬浮区状态、沉淀效果等变化规律，重点分析了轻度絮凝、中度絮凝和重度絮凝3个典型的工况。结果表明：轻度絮凝的絮体自然沉降效能和悬浮区拦截效果均不佳；重度絮凝虽然絮体自然沉降效果好，但是悬浮区拦截效果较差；只有中度絮凝可以较好地平衡絮体自然沉降和悬浮区拦截的协同作用，沉淀效果最好，对应的絮体分型维数为1.83 ...
鄢碧鹏, 丁杨杨
doaj +2 more sources
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT This study introduces novel nonequiatomic TiZrCoCrMoCux (x = 0, 5, 10; at%) medium‐entropy alloys (MEAx) tailored for orthopedic implants, synergistically combining the biocompatibility of Ti‐based alloys, the wear resistance of CoCrMo alloys, and the antibacterial/osteogenic attributes of Cu. The alloy's microstructure, mechanical properties,
Hang Yu +9 more
wiley +1 more source
, 2012 应用电化学方法研究了混价铁氢氧化物对磷的吸附/沉淀及主要环境因素的影响。结果表明,混价铁氢氧化物通过吸附/沉淀可将水溶性磷维持在较低水平,该吸附较好地符合Langmuir方程(R2=0.9742),混价铁氢氧化物对磷的最大吸附容量为56.8 mg/g;亚铁比例越高,单位铁的磷吸附/沉淀容量越高;混价铁氢氧化物氧化导致磷吸附容量降低;pH为中性时,混价铁氢氧化物的磷吸附容量最大,弱酸、弱碱性则不利于磷的吸附;钙离子可增加混价铁氢氧化物的磷吸附容量;硫离子则相反,原因是硫离子促进了三价铁还原及硫化亚铁的形成;
张雯, 李清曼, 阚丹, 孙静娴
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, 1999 该文报道了一种改进本征吸杂技术－－低温短时热退火工艺，以增强本征吸杂效果，在本征吸杂工艺的低温热退火中，用连续的线性缓慢升温(Ramping)退火替代常规的长时间低温恒温退火，应用于直拉(CZ)重掺N型硅衬底片，明显增加了氧沉淀等体微缺陷密度，这些高密度氧沉淀物在随后IC器件工艺中继续长大，成为稳定的高效本征吸杂中心。从经典的成核沉淀理论 ...
韩秀峰 +8 more
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