Details

Autor(en) / Beteiligte

• Yin, Peng‐Fei
• Zhou, Ming
• Chen, Junze
• Tan, Chaoliang
• Liu, Guigao
• Ma, Qinglang
• Yun, Qinbai
• Zhang, Xiao
• Cheng, Hongfei
• Lu, Qipeng
• Chen, Bo
• Chen, Ye
• Zhang, Zhicheng
• Huang, Jingtao
• Hu, Dianyi
• Wang, Jie
• Liu, Qing
• Luo, Zhiyong
• Liu, Zhengqing
• Ge, Yiyao
• Wu, Xue‐Jun
• Du, Xi‐Wen
• Zhang, Hua

Titel

Synthesis of Palladium‐Based Crystalline@Amorphous Core–Shell Nanoplates for Highly Efficient Ethanol Oxidation

Ist Teil von

• Advanced materials (Weinheim), 2020-05, Vol.32 (21), p.e2000482-n/a

Ort / Verlag

Germany: Wiley Subscription Services, Inc

Erscheinungsjahr

2020

Quelle

Wiley Online Library

Beschreibungen/Notizen

• Phase engineering of nanomaterials (PEN) offers a promising route to rationally tune the physicochemical properties of nanomaterials and further enhance their performance in various applications. However, it remains a great challenge to construct well‐defined crystalline@amorphous core–shell heterostructured nanomaterials with the same chemical components. Herein, the synthesis of binary (Pd‐P) crystalline@amorphous heterostructured nanoplates using Cu3−χP nanoplates as templates, via cation exchange, is reported. The obtained nanoplate possesses a crystalline core and an amorphous shell with the same elemental components, referred to as c‐Pd‐P@a‐Pd‐P. Moreover, the obtained c‐Pd‐P@a‐Pd‐P nanoplates can serve as templates to be further alloyed with Ni, forming ternary (Pd‐Ni‐P) crystalline@amorphous heterostructured nanoplates, referred to as c‐Pd‐Ni‐P@a‐Pd‐Ni‐P. The atomic content of Ni in the c‐Pd‐Ni‐P@a‐Pd‐Ni‐P nanoplates can be tuned in the range from 9.47 to 38.61 at%. When used as a catalyst, the c‐Pd‐Ni‐P@a‐Pd‐Ni‐P nanoplates with 9.47 at% Ni exhibit excellent electrocatalytic activity toward ethanol oxidation, showing a high mass current density up to 3.05 A mgPd−1, which is 4.5 times that of the commercial Pd/C catalyst (0.68 A mgPd−1). Binary (Pd‐P) and ternary (Pd‐Ni‐P) nanoplates, both with crystalline@amorphous core–shell nanostructures, are synthesized using Cu3−χP nanoplates as templates. The obtained c‐Pd‐Ni‐P@a‐Pd‐Ni‐P heterostructured nanoplates exhibit superior electrocatalytic performance toward the ethanol oxidation reaction in alkaline media compared to c‐Pd‐P@a‐Pd‐P heterostructured nanoplates and commercial Pd/C catalysts.