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Heterostructured Ni/NiO Nanoparticles on 1D Porous MoOx for Hydrolysis of Ammonia Borane
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2021-01-14 , DOI: 10.1021/acsaem.0c02502 Jiahuan He 1 , Zhendong Yao 1 , Xuezhang Xiao 1 , Wenzheng Chen 1 , Ziwei Huang 1 , Xiulin Fan 1 , Zhong Dong 1 , Xu Huang 1 , Xuancheng Wang 1 , Man Chen 1 , Lixin Chen 1, 2
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2021-01-14 , DOI: 10.1021/acsaem.0c02502 Jiahuan He 1 , Zhendong Yao 1 , Xuezhang Xiao 1 , Wenzheng Chen 1 , Ziwei Huang 1 , Xiulin Fan 1 , Zhong Dong 1 , Xu Huang 1 , Xuancheng Wang 1 , Man Chen 1 , Lixin Chen 1, 2
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The hydrolysis of AB has been regarded as a kind of secure and efficient method for hydrogen generation. However, the development of economical and stable catalysts with high catalytic activities remains a bottleneck for realizing further industrial application of AB. Herein, high-loading heterostructured Ni/NiO nanoparticles with different Ni/NiO weight ratios anchored on one-dimensional porous MoOx nanorods (denoted as Ni/NiO@MoOx) have been synthesized and introduced into the hydrolysis of AB for the first time. The Ni/NiO@MoOx-50H catalyst (synthesized under the reduction atmosphere of 50% H2/50% Ar) with an optimal Ni/NiO weight ratio (73.96/26.04) exhibits an excellent catalytic activity for the hydrolysis of AB with the turnover frequency (TOF) value reaching 86.29 molH2 molNi–1 min–1 at 298 K, which is one of the highest TOF values among the reported non-noble metal catalysts. In addition, on account of high Ni loading weight (29.15 wt %), the hydrogen generation rate of Ni/NiO@MoOx-50H achieves 10,478 mL·min–1 g–1 (35,947 mL·min–1 gNi–1), overtaking most values both in noble and non-noble metal catalysts for the hydrolysis of AB. The bridging effect of NiO steadily connects the Ni and MoOx carrier and promotes great durability of Ni/NiO@MoOx-50H, of which the catalytic activity exhibits not significant degradation in the fifth cycle. The catalysis originated from the metal/metal oxide (Ni/NiO@MoOx) provides a novel insight into the catalyst design, preparation, and application for chemical hydrogen storage systems.
中文翻译：
一维多孔MoO x上的异质结构Ni / NiO纳米颗粒用于氨硼烷的水解
AB的水解已被认为是一种安全有效的产氢方法。然而，开发具有高催化活性的经济且稳定的催化剂仍然是实现AB进一步工业应用的瓶颈。在此，合成了锚定于一维多孔MoO x纳米棒（表示为Ni / NiO @ MoO x）上的具有不同Ni / NiO重量比的高负载异质结构Ni / NiO纳米颗粒，并将其首次引入AB的水解中。Ni / NiO @ MoO x -50H催化剂（在50％H 2的还原气氛下合成具有最佳Ni / NiO重量比（73.96 / 26.04）的/ 50％Ar）对AB的水解表现出出色的催化活性，周转频率（TOF）值在298时达到86.29 mol H 2 mol Ni –1 min –1 K是报告的非贵金属催化剂中最高的TOF值之一。此外，由于高的Ni负载量（29.15 wt％），Ni / NiO @ MoO x -50H的氢气产生速率达到10,478 mL·min –1 g –1（35,947 mL·min –1 g Ni –1），在AB水解方面，在贵金属和非贵金属催化剂中都超过了大多数值。NiO的架桥作用稳定地连接了Ni和MoO x载体，并提高了Ni / NiO @ MoO x -50H的持久性，其催化活性在第五个循环中没有显着降低。源自金属/金属氧化物（Ni / NiO @ MoO x）的催化作用为化学储氢系统的催化剂设计，制备和应用提供了新颖的见解。
更新日期：2021-02-22
中文翻译：
一维多孔MoO x上的异质结构Ni / NiO纳米颗粒用于氨硼烷的水解
AB的水解已被认为是一种安全有效的产氢方法。然而，开发具有高催化活性的经济且稳定的催化剂仍然是实现AB进一步工业应用的瓶颈。在此，合成了锚定于一维多孔MoO x纳米棒（表示为Ni / NiO @ MoO x）上的具有不同Ni / NiO重量比的高负载异质结构Ni / NiO纳米颗粒，并将其首次引入AB的水解中。Ni / NiO @ MoO x -50H催化剂（在50％H 2的还原气氛下合成具有最佳Ni / NiO重量比（73.96 / 26.04）的/ 50％Ar）对AB的水解表现出出色的催化活性，周转频率（TOF）值在298时达到86.29 mol H 2 mol Ni –1 min –1 K是报告的非贵金属催化剂中最高的TOF值之一。此外，由于高的Ni负载量（29.15 wt％），Ni / NiO @ MoO x -50H的氢气产生速率达到10,478 mL·min –1 g –1（35,947 mL·min –1 g Ni –1），在AB水解方面，在贵金属和非贵金属催化剂中都超过了大多数值。NiO的架桥作用稳定地连接了Ni和MoO x载体，并提高了Ni / NiO @ MoO x -50H的持久性，其催化活性在第五个循环中没有显着降低。源自金属/金属氧化物（Ni / NiO @ MoO x）的催化作用为化学储氢系统的催化剂设计，制备和应用提供了新颖的见解。
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