2019年12月21日 · The guest anions play a key role in the construction of layered double hydroxide (LDH)-based host–guest functional materials. In this work, the orientation of the interlayer species, interlayer distances, binding energies, electronic density differences and density of states of the MgnAl-LDHs (n = 1.6, 2.0,

2024年1月1日 · Here, the MgAl layered double hydroxide (LDH) supports and relevant metal on LDH catalysts (i.e., Ni, Co, and Ru) were prepared and investigated under non thermal plasma (NTP) conditions to probe the role of surface oxygen vacancy (O V) in NTP-assisted ammonia (NH 3) synthesis.

2019年4月8日 · 本 决定 Mg/ Al-LDH 合成和离子交换性质 的因素主要是 文在使用共沉淀法合成LDH 的研究中发现 ,在相同的合成温 Mg/ Al 比和共沉淀终点p H 值等 。 为了同时考察 Mg/ Al 比、 度条件下 , 由于平衡 p H 值 、初始 Mg/ Al 比和干燥温度不同 , p H 值 、温度对合成 LDH 时的镁铝水解率和产物 LDH 结晶度 合成的LDH 结晶度和结构发生有规律的变化 ,从而间接影响 的影响 ,在合成 LDH 实验中 , 以 Mg/ Al 比、p H 值 、温度为影 LDH 的性能 ,这对于 LDH 制备技术的发 …

2023年1月3日 · In this work, a synthesis procedure was developed to introduce transition metal ions into a MgAl-layered double hydroxide (MgAl-LDH, or hydrotalcite) by utilizing the unique “memory effect” property of calcined LDH. This technique allows our MgAl-LDH to retain its pristine flowerlike morphology, which prevents stacking of nanosheets and is ...

2024年3月3日 · In this research, we present a novel design protocol for the in-situ synthesis of MgAl layered double hydroxide-copper metal–organic frameworks (LDH-MOFs) nanocomposite based on the...

2021年12月1日 · The results suggested that the electron transfer between MgAl-LDH and CoS x was beneficial to restrain the recombination of photogenerated carriers, thus enhancing the photocatalytic activity and stability of MA/CS x-3 composites. The transient fluorescence of CoS x, MgAl-LDH and MA/CS x-3 photocatalysts was measured in Fig. 5 b. Among them ...

本研究采用共沉淀法和水热法制备不同形貌的MgAl水滑石 (LDH), 用等体积浸渍法制备负载型Pt/LDH催化剂, 研究不同形貌的LDH对Pt催化肉桂醛选择加氢性能的影响。利用不同表征方法对催化剂结构、形貌、表面理化性能进行分析。结果表明, LDH载体的形貌对Pt/LDH催化剂的结构和性能影响较大, 具有片层结构的LDH纳米片与活性组分Pt之间的相互作用易于贵金属Pt的分散和稳定。同时, LDH载体中存在丰富的碱性位点和表面羟基, 有利于提高催化加氢活性和稳定性。催化性 …

2023年8月5日 · 作者开发了一种新型的生物相容性mgal-ldh负载的ru sae(ru1/ldh sae)。ru1/ldh sae对h2o2表现出突出的pod样催化效率，其性能是ru纳米簇(ncs)纳米酶的20倍，超过了大多数sae。 要点2.

In present study, a series of MgAl hydrotalcite (LDH) supports with various morphologies were synthesized by co-precipitation and hydrothermal methods. The supported Pt/LDH catalysts were prepared by incipient wet impregnation (IMP) method with LDH supports, and used for cinnamaldehyde selective hydrogenation reaction, and influences of LDH ...

4 天之前 · Moreover, our findings further indicate that the active sites for the reactions are situated on the hydroxyl O atoms of the MgAl-LDH adjacent to the Ag atoms, rather than on the Ag atoms themselves. This study offers novel insights and design principles for developing single-atom-modified materials to achieve enhanced CH4 selectivity from a ...