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NEW JOURNAL OF CHEMISTRY · 2019 ·Vol. 44 ·期 4 ·1493-1499 · IF 3.069

Improvement of HER activity for MoS2: insight into the effect and mechanism of phosphorus post-doping

Xianpei Ren,Fan Yang,Rong Chen,Pinyun Ren,Yonghua Wang

MoS2-Based materials are considered to be excellent alternative catalysts for the hydrogen evolution reaction (HER), where doping engineering has proven to be an effective way to tune their HER activity. Herein, a novel and facile approach was developed to prepare a phosphorus-doped molybdenum sulfide (P-MoS2) electrocatalyst by a post-doping method. After phosphorus doping, the P-MoS2 catalyst accomplished high HER catalytic activity with a low onset overpotential of −118 mV and a small Tafel slope of 52 mV dec−1, making it a promising HER electrocatalyst for practical applications.

CAS / MDL: 50-81-7 7631-95-0 603-35-0

研究领域: 材料科学 · 电化学

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Journal of Materials Chemistry A · 2021 ·Vol. 9 ·期 21 ·12807-12817 · IF 12.732

Nitrogen, phosphorus co-doped eave-like hierarchical porous carbon for efficient capacitive deionization

Hao Zhang,Chaohai Wang,Wuxiang Zhang,Ming Zhang,Junwen Qi,Jieshu Qian,Xiuyun Sun,Brian Yuliarto,Jongbeom Na,Teahoon Park,Hassanien Gomaa Abdien Gomaa,Yusuf Valentino Kaneti,Jin Woo Yi,Yusuke Yamauchi,Jiansheng Li

Carbon-based electrodes play important roles in constructing efficient capacitive deionization (CDI) devices. Therefore, the rational design of carbon materials with optimized structure, composition, and morphology is crucial for further improving the CDI performance. Herein, a novel N, P co-doped eave-like hierarchical porous carbon (NP-EHPC) for CDI is reported. To prepare the NP-EHPC, the core–shell ZIF-8@AF particles are first prepared through the kinetically-controlled growth of zeolitic imidazolate framework-8 (ZIF-8) and polymerization of p-aminophenol and formaldehyde (AF), followed by subsequent pyrolysis and post-doping with phosphorus. Owing to the unique eave-like morphology, presence of abundant mesopores, and co-doping of P and N, the NP-EHPC exhibits a high desalination capacity of 24.14 mg g−1 in 500 mg L−1 NaCl solution at 1.2 V and long cycling stability of over 150 cycles. Moreover, the density functional theory (DFT) calculation results reveal that the co-doping of N and P atoms can greatly enhance the binding energies for Na and Cl atoms and lead to superior electrosorption capacity. This work provides a new insight into the design of high-performance carbon materials for the desalination of brackish water.

CAS / MDL: 83-86-3 9002-84-0

研究领域: 材料科学 · 环境工程 · 电化学

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Improvement of HER activity for MoS2: insight into the effect and mechanism of phosphorus post-doping

Nitrogen, phosphorus co-doped eave-like hierarchical porous carbon for efficient capacitive deionization