Results 21 to 30 of about 6,835 (161)
Rare Metals, EarlyView.ABSTRACT The development of high‐performance and stable electrocatalysts for oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER) plays a critical role in advancing clean energy technologies, including metal‐air batteries and hydrogen production through overall water splitting.
Chen‐Yu Cai +4 more
wiley +1 more source
Determination of anions in the water reducing agent by ion chromatograph(离子色谱法测定减水剂中的阴离子)
Zhejiang Daxue xuebao. Lixue ban, 2016 建立一种离子色谱法同时测定减水剂中的葡萄糖酸根、氯离子、硫酸根、硫代硫酸根.样品经过稀释、C18小柱预处理后直接进样.选用shodex 52-4e阴离子交换柱分离样品，淋洗液为3.6 mmol•L-1 N2CO3，柱温50 ℃，流速0.8 mL•min-1,进样量7 µL，抑制电导检测，外标法定量，当葡萄糖酸根、氯离子、硫酸根、硫代硫酸根的质量分数分别为5.0〜100.0，0.1~30.0，1.0~50.0，1.0~50.0 mg·L-1时，与色谱峰面积呈良好的线性关系（r≥0.999 1 ...
ZHUBinhe(朱彬和) +4 more
doaj +1 more source
Development of heat-sensitive viscosity reducers(超稠原油热敏性降粘剂的研制)
Zhejiang Daxue xuebao. Lixue ban, 2003 非离子表面活性剂与阴离子及两性表面活性剂复配后,不但可以改变乳状液的稳定性,而且可以改变非离子表面活性剂对原油的相转变温度,测定了原油的HLB及PIT等参数,确定了适宜的非离子表面活性剂,并研制出易乳化、脱水的新型乳化降粘剂,很大程度上解决了目前稠油降粘中普遍存在的脱水难题.
TANFei(谭非) +4 more
doaj +1 more source
Applications of Aqueous Metal Phthalocyanine Spectroscopic Probes in the Analysis of Biomacromolecules and Inorganic Anions [PDF]
, 2015 金属酞菁是一类化学性质稳定（耐热、耐酸、耐碱），较易合成的化合物。自Braun和Tehemiac获得第一个酞菁化合物以来，酞菁化合物由于其特殊的物理化学和光学性质而在化学和化工领域得到了广泛研究和应用。上世纪80年代开始，酞菁化合物在生物医学领域的应用也逐步得到开发应用。由于金属酞菁的吸收峰和荧光发射峰都在长波区段，可以避开绝大多数天然物质背景光的干扰，在生物化学分析中具有广泛的应用前景。本论文围绕水溶性金属酞菁作为分子探针在生物大分子和无机阴离子检测中的应用而展开 ...
杨惠卿
core
Rare Metals, EarlyView.ABSTRACT Efficient and durable bifunctional electrocatalysts are vital for scalable water electrolysis. Here, we realize cobalt‐vacancy (Covac) engineering in CoFeP supported on N,P‐codoped carbon nanocages (Co1‐vacFeP/NPC) through a simple route comprising a CoFe Prussian blue analog precursor, phosphidation–pyrolysis, tannic‐acid etching, and a ...
Yuan‐Liang Yuan +6 more
wiley +1 more source
A Theoretical Study of Reactions between Polysulfides and Organic Carbonates and Raman Spectra in Lithium-Sulfur Battery [PDF]
, 2015 锂硫电池具有更高能量密度比，近年来锂硫电池研究备受关注。作为电池主要构成的一部分，电解液会显著影响电池的电化学行为。在锂硫电池工作中，如果可溶的多硫阴离子与电解液发生化学反应，将严重影响电池的循环性能。 有机碳酸酯类材料中的碳酸乙烯酯(EC)和碳酸丙烯酯(PC)常作为电解液用于电池。然而，其作为锂离子电池电解液时具有优良的循环性能，但在作为锂硫电池电解液时却使电池循环性能变差。不同的研究者对此现象的认识存在较大的分歧，其主要的分歧在于多硫阴离子(Sn2 ...
潘文博
core
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Nanozymes have attracted considerable attention in cancer therapy due to their adjustable enzyme activity and high catalytic efficiency. However, they still face a major challenge from tumor metastasis. In this work, endogenous/exogenous dual‐responsive bimetallic hollow PdRu (termed HPdRu) nanozymes were prepared.
Nan‐Nan Zheng, Xin Hu, Jun‐Qing Hu
wiley +1 more source
Turn Structure, Chirality Transfer and Applications of Peptide-Based N-Amidothioureas [PDF]
, 2016 多肽是重要的生命基础物质之一，其作用涉及生命活动的各个环节。多肽具有丰富的手性源，系因其氨基酸结构单元绝大部分为手性的。通过分子内手性传递，单个氨基酸残基的手性可影响整条肽链分子结构及功能，而分子间手性传递则于肽链与底物分子间的特异性识别和结合过程中扮演重要角色，因此多肽及其衍生物的手性传递特征备受重视，对拟肽类药物分子及不对称有机催化剂的设计合成、生物分子间相互作用的研究等具有重要指导意义。 同手性起源是手性科学研究的热点及难题，它作为生命科学领域的重要研究内容而备受关注 ...
严小胜
core
Boron Difluoride Chelated Aminoanthraquinone Photosensitizer for Type I Photodynamic Therapy
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Type I photosensitizers capable of generating cytotoxic reactive oxygen species (ROS), with reduced oxygen dependence under photoirradiation, are regarded as a promising phototherapeutic approach for hypoxic solid tumors. Herein, based on the electron donor of 9‐phenyl‐carbazole (Cz) and the electron acceptor of anthraquinone (AQ ...
Tian Zhang +8 more
wiley +1 more source
Recent progress of direct ammonia fuel cells: from materials to transportation applications
Rare Metals, Volume 44, Issue 6, Page 3686-3708, June 2025.Graphical Abstract AbstractAmmonia is a promising zero‐carbon alternative fuel. Direct ammonia fuel cells (DAFCs), as an efficient ammonia‐fueled power system, have an extremely high application value in the field of transportation for decarbonization.
Yi Huang +8 more
wiley +1 more source