为了增强BiVO4光电极的析氧反应(OER),采用SILAR技术应用了Co,Fe-NTMP金属有机共催化剂。这显著改善了电荷分离和传输,使电流密度在1.23 V vs. RHE时达到2.6 mA cm-2,比裸BiVO4提高了五倍以上。ABPE在0.83 V vs. RHE时达...
近日,北京科技大学黄秀兵副教授、王戈教授团队通过在泡沫镍(NF)支撑的Co3O4纳米线上修饰具有Ce3+/Ce4+氧化还原对、较高储氧能力和电子/离子导电性的CeO2纳米颗粒,Co3O4与CeO2异质界面的构建可以调节中间体吸附,促进催化剂的结构演变和电荷转移。因此,与NF@Co3O4和NF@CeO2相比,成功合成的NF@Co3O4/CeO2在...
CeO2/Co3O4 heterostructureN-doped carbon nanofibersoxygen evolution reactionsynergistic effectsExploring highly efficient and cost-effective electrocatalysts with more feasible synthesis strategies toward oxygen evolution reaction (OER) is highly desirable for a broad range of advanced sustainable energy ...
图2.（a）10%CeO2-CoO纳米纤维的XPS全扫描光谱。（b）10%CeO2-CoO和裸CeO2纳米纤维的典型窄Ce3d光谱。（c）10%CeO2-CoO和裸CoO纳米纤维的典型窄Co2p光谱。（d）裸CeO2、CoO、10%CeO2-Co3O4和10%CeO2-CoO纳米纤维的典型窄O1s光谱。图3.10%CeO2-CoO纳米纤维和其他催化剂在1M KOH电解质中进行OER的...
(d)裸CeO2、CoO、10%CeO2-Co3O4和10%CeO2-CoO纳米纤维的典型窄O1s光谱。 图3.10%CeO2-CoO纳米纤维和其他催化剂在1M KOH电解质中进行OER的电化学性能。(a)iR补偿的LSV极化曲线。(b)10%CeO2-CoO纳米纤维和其他催化剂在10和30mA/cm2下的过电位比较。(c)10%CeO2-CoO纳米纤维和其他催化剂在1.55和1.6V...
本发明涉及一种高性能Co3O4‑CeO2/Co‑N‑C复合催化剂及其制备方法和应用。所述制备方法包括如下步骤:S1:将钴盐和铈盐溶解后调节pH为7~11,加入掺氮的碳载体,于60~100℃水热反应10~20h;所述掺氮的碳载体通过质量比为1:1~5的碳源和氮源反应得到;S2:对S1反应后的溶液抽滤,洗涤,烘干,研磨即得到所述...
For OER, Co3O4@Z67-N700@CeO2 ... X Li,S You,J Du,... - 《Journal of Materials Chemistry A》 被引量: 0发表: 2019年 ZIF-67-induced double-tubular 1D CeO2/Co3O4 heterostructures allowing electron transfer synergetic mechanism for enhanced photocatalytic performance ZIF-67-induced double...
Li et al. prepared Ag-CeO2-Co3O4/C bifunctional catalysts by a simple method, which significantly promoted the improvement of ORR/OER catalytic activity [12]. Jiang et al. prepared Ni-Co CeO2/Ni composite electrodes by magnetically induced electrodeposition, showing low overpotential, which ...
The reduction peaks at lower temperatures correspond to surface Co oxides following a two-step reduction, namely from Co3O4 to CoO and then to metallic Co [28]. The differences in Co reduction pattern are attributed to differences in particle size and distribution of Co, [29] as well as ...
3,4. There are different methods for producing hydrogen, such as natural gas steam reforming (the classical route) and the well-known photo/electrocatalytic water splitting method. In general, electrocatalytic water splitting is performed through the anodic oxygen evolution reaction (OER) and ...