INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2017
·
IF 2.843
Xinxin Zhang,Shiyang Cheng,Wei Zhang,Cai Zhang,Nicholas E. Drewett,Xiyang Wang,Dong Wang,Seung Jo Yoo,Jin-Gyu Kim,Weitao Zheng
Ag/Pr6O11 catalysts supported by either Pr6O11 nanorods (Pr6O11-NRs) or nanoparticles (Pr6O11-NPs) were prepared by conventional incipient wetness impregnation. The nanocomposite of Ag/Pr6O11-NRs demonstrated a higher catalytic activity for CO oxidation than Ag/Pr6O11-NPs at lower temperatures. This improved performance may be ascribed to the mesoporous features and resultant oxygen vacancies of the Pr6O11 nanorods support, as well as the large surface area and homogeneous loading of Ag species. As a result, 98.7 and 100% CO conversions were achieved at 210 and 240 °C for Ag/Pr6O11-NRs, while Ag/Pr6O11-NPs require a temperature of 320 °C to obtain the 100% CO conversion rate. These findings reveal that Pr6O11-NRs is the preferable support, comparative to Pr6O11-NPs, for Ag/Pr6O11 catalysts, for CO oxidation.
研究领域:
催化化学
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纳米材料科学
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环境化学
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表面科学
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能源化学
✓ 已验证
DOI
高影响因子
Materials
·
2019
·Vol. 12
·期 20
·3364
·
IF 2.972
Kefeng Pan,Yingying Zhai,Jiawei Zhang,Kai Yu
Electrolytic water splitting with evolution of both hydrogen (HER) and oxygen (OER) is an attractive way to produce clean energy hydrogen. It is critical to explore effective, but low-cost electrocatalysts for the evolution of oxygen (OER) owing to its sluggish kinetics for practical applications. Fe-based catalysts have advantages over Ni- and Co-based materials because of low costs, abundance of raw materials, and environmental issues. However, their inefficiency as OER catalysts has caused them to receive little attention. Herein, the FeS2/C catalyst with porous nanostructure was synthesized with rational design via thein situelectrochemical activation method, which serves as a good catalytic reaction in the OER process. The FeS2/C catalyst delivers overpotential values of only 291 mV and 338 mV current densities of 10 mA/cm2and 50 mA/cm2, respectively, after electrochemical activation, and exhibits staying power for 15 h.
研究领域:
材料科学
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电化学
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纳米科技
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能源化学
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催化化学
✓ 已验证
DOI
高影响因子
Catalysts
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2025
·Vol. 15
·期 9
·876
·
IF 4
Lijie Sun,Yaqun Mi,Bo Li
Doping a third element or external functional components into binary alloy nanostructured catalysts typically significantly enhances their electrocatalytic performance. This study demonstrates that doping nickel selenide (NiSe2) with approximately10at%iron (Fe) is an effective strategy for improving its oxygen evolution reaction (OER) catalytic activity. The resulting Ni0.9Fe0.1Se2undergoes a structural transformation from its original nanodendritic morphology and exhibits outstanding OER catalytic performance in alkaline media. It achieves a low overpotential of231mVat a current density of10mAcm−2, which is approximately30%lower than that of NiSe2(301mV). The Tafel slope of Ni0.9Fe0.1Se2is116mVdec−1. However, degradation observed after 5 h of stability testing suggests that the doping process requires further optimization.
研究领域:
材料科学
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电化学
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纳米技术
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催化
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能量转换
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-9
·
IF 14.7
Zhai Jianxin,Xia Zhanghui,Zhou Baowen,Wu Haihong,Xue Teng,Chen Xiao,Jiao Jiapeng,Jia Shuaiqiang,He Mingyuan,Han Buxing
Upcycling of CO 2 into fuels by virtually unlimited solar energy provides an ultimate solution for addressing the substantial challenges of energy crisis and climate change. In this work, we report an efficient nanostructured Ru/MnO x catalyst composed of well-defined Ru/MnO/Mn 3 O 4 for photo-thermal catalytic CO 2 hydrogenation to CH 4 , which is the result of a combination of external heating and irradiation. Remarkably, under relatively mild conditions of 200 °C, a considerable CH 4 production rate of 166.7 mmol g −1 h −1 was achieved with a superior selectivity of 99.5% at CO 2 conversion of 66.8%. The correlative spectroscopic and theoretical investigations suggest that the yield of CH 4 is enhanced by coordinating photon energy with thermal energy to reduce the activation energy of reaction and promote formation of key intermediate COOH* species over the catalyst. This work opens up a new strategy for CO 2 hydrogenation toward CH 4 .
研究领域:
化学
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材料科学
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环境科学
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能源科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Junfang Cheng,Zuyu Zhang,Xinyi Li,Zijie Peng,Ziye Feng,Huimin Wang,Sijia Kong,Dawei Liu,Jiantao Zai
The advancement of seawater electrolysis requires highly active and durable nanostructured anode catalysts to enhance the oxygen evolution reaction (OER) while suppressing chloride oxidation (ClOR) and corrosion. High-entropy spinel oxide nanoparticles (HESO NPs) have emerged as promising OER catalysts in alkaline media due to their tunable electronic structures and synergistic multimetal effects. In this study, three nanostructured high-entropy spinel oxides─(CrFeMnNiCo)3O4, (CrFeMnNiCoMo)3O4, and (CrFeMnNiCoRu)3O4─were synthesized via a scalable hydrothermal–calcination method, featuring well-defined spinel phases, uniform elemental distribution, and nanoscale morphology. Notably, the Mo-doped (CrFeMnNiCoMo)3O4 NPs exhibited superior OER performance, achieving low overpotentials of 184 and 229 mV at 10 mA cm–2 in 1 M KOH and alkaline simulated seawater (1 M KOH + 1 M NaCl), respectively, outperforming even the Ru-containing (CrFeMnNiCoRu)3O4 NPs. Furthermore, the nanostructured (CrFeMnNiCoMo)3O4 demonstrated exceptional durability, maintaining stability for 20 h at 50 mA cm–2 in 1 M KOH and 5 h in simulated seawater, significantly surpassing the (CrFeMnNiCo)3O4 NPs. This enhanced stability is attributed to the protective Mo-rich surface layer, which mitigates alkaline corrosion and chloride adsorption. The nanoscale engineering of high-entropy spinel oxides, combined with Mo doping, provides a synergistic strategy to optimize OER activity and ClOR resistance, making them highly suitable for seawater electrolysis applications. This work highlights the potential of high-entropy oxide nanomaterials as efficient and robust electrocatalysts for sustainable hydrogen production.
研究领域:
电化学
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纳米材料
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催化
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能量转换
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水分解
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材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）