当前位置：
X-MOL 学术
›
Inorg. Chem.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Ligand-Assisted Controllable Growth of Self-Supporting Ultrathin Two-Dimensional Metal–Organic Framework Nanosheet Electrodes for an Efficient Oxygen Evolution Reaction
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2022-09-02 , DOI: 10.1021/acs.inorgchem.2c02669 Lei Wang 1 , Ani Wang 1 , WenXia Fan 1 , Jie Pan 1 , Zhenzhen Xue 1 , Guoming Wang 1
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2022-09-02 , DOI: 10.1021/acs.inorgchem.2c02669 Lei Wang 1 , Ani Wang 1 , WenXia Fan 1 , Jie Pan 1 , Zhenzhen Xue 1 , Guoming Wang 1
Affiliation
|
Rational design of metal–organic frameworks (MOFs) into ultrathin two-dimensional (2D) nanosheets with controllable thickness is significantly attractive but is also a significant challenge. Herein, the authors report, for the first time, the synthesis of ultrathin 2D nickel-based MOF nanosheets with a thickness of only about 2 nm via a ligand-assisted controllable growth strategy, which cannot be acquired from the exfoliation of their bulky counterparts or the conventional hydrothermal method. The correlation between 2D nanosheets and crystal growth preference was demonstrated through a judicious choice of a specific [Ni(BIP)(p-BDC)(H2O)2]n framework (BIP = (3,5-bis(1-imidazoly)pyridine), p-H2BDC = terephthalic acid) to underlie the geometry of the resultant morphology. Under the modulation by the dosage of terephthalic acid through a corrosion–dissolution–coordination process, the nanosheets of Ni-MOFs with a controllable thickness can be tuned to 50 and 100 nm. Ultrathin 2D Ni-MOF nanosheet-derived N-doped Ni@carbon exhibits a satisfactory electrocatalytic performance with a small overpotential of 170 mV to achieve a current density of 10 mA cm–2, much outperforming the bulk Ni-MOF and the most reported non-noble-metal oxygen evolution reaction electrocatalysts to date. It is believed that this ligand-assisted controllable growth strategy represents a novel and simple path to prepare high-performance MOF-based electrocatalysts for wide applications.
中文翻译：
用于高效析氧反应的自支撑超薄二维金属-有机框架纳米片电极的配体辅助可控生长
将金属有机框架（MOFs）合理设计成厚度可控的超薄二维（2D）纳米片是非常有吸引力的，但也是一个重大挑战。在这里，作者首次报道了通过配体辅助可控生长策略合成厚度仅为约 2 nm 的超薄二维镍基 MOF 纳米片，这不能通过剥离其庞大的对应物或传统的水热法。2D 纳米片与晶体生长偏好之间的相关性通过明智地选择特定的 [Ni(BIP)( p -BDC)(H 2 O) 2 ] n框架 (BIP = (3,5-bis(1-imidazoly )吡啶), p -H 2BDC = 对苯二甲酸）作为所得形态的几何形状的基础。在对苯二甲酸用量通过腐蚀-溶解-配位过程的调制下，具有可控厚度的 Ni-MOFs 纳米片可以调节到 50 和 100 nm。超薄二维 Ni-MOF 纳米片衍生的 N 掺杂 Ni@carbon 表现出令人满意的电催化性能，具有 170 mV 的小过电势，可实现 10 mA cm -2的电流密度，远优于块状 Ni-MOF 和报道最多的非-迄今为止的贵金属析氧反应电催化剂。人们认为，这种配体辅助的可控生长策略代表了一种制备用于广泛应用的高性能 MOF 基电催化剂的新颖而简单的途径。
更新日期：2022-09-02
中文翻译：
用于高效析氧反应的自支撑超薄二维金属-有机框架纳米片电极的配体辅助可控生长
将金属有机框架（MOFs）合理设计成厚度可控的超薄二维（2D）纳米片是非常有吸引力的，但也是一个重大挑战。在这里，作者首次报道了通过配体辅助可控生长策略合成厚度仅为约 2 nm 的超薄二维镍基 MOF 纳米片，这不能通过剥离其庞大的对应物或传统的水热法。2D 纳米片与晶体生长偏好之间的相关性通过明智地选择特定的 [Ni(BIP)( p -BDC)(H 2 O) 2 ] n框架 (BIP = (3,5-bis(1-imidazoly )吡啶), p -H 2BDC = 对苯二甲酸）作为所得形态的几何形状的基础。在对苯二甲酸用量通过腐蚀-溶解-配位过程的调制下，具有可控厚度的 Ni-MOFs 纳米片可以调节到 50 和 100 nm。超薄二维 Ni-MOF 纳米片衍生的 N 掺杂 Ni@carbon 表现出令人满意的电催化性能，具有 170 mV 的小过电势，可实现 10 mA cm -2的电流密度，远优于块状 Ni-MOF 和报道最多的非-迄今为止的贵金属析氧反应电催化剂。人们认为，这种配体辅助的可控生长策略代表了一种制备用于广泛应用的高性能 MOF 基电催化剂的新颖而简单的途径。
京公网安备 11010802027423号