ACS Catalysis
·
2018
·
IF 11.384
Shengfeng Xue,Wentao Deng,Fang Yang,Jinlong Yang,Ibrahim Saana Amiinu,Daping He,Haolin Tang,Shichun Mu
A hexapod PtRuCu nanocrystalline alloy material is successfully fabricated by a facile approach based on Stranski–Krastanov growth and galvanic replacement and used as an efficient catalyst for direct methanol fuel cells (DFMCs). Because of the synergetic effect of metallic elements in the methanol oxidation, the activity and durability of the prepared PtRuCu/C catalyst is significantly enhanced. It has a mass activity of 1.35 A mgPt–1 and a specific activity of 3.92 mA cm–2, which are 3.8 and 8.2 times higher than those of Pt/C, respectively. Its mass activity only decreases 27% after 800 CV cycles compared with Pt/C (60% decline), indicating the admirable stability of the PtRuCu catalyst.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-12
·
IF 14.7
Jing Zekun,Guo Yakun,Wang Qi,Yan Xinrong,Yue Guozong,Li Zhendong,Liu Hanwen,Qin Ruixuan,Zhong Changyin,Li Mingzhen,Xu Dingguo,Yao Yunxi,Yao Yonggang,Shuai Maobing
Hydrogenation is a versatile chemical process with significant applications in various industries, including food production, petrochemical refining, pharmaceuticals, and hydrogen carriers/safety. Traditional hydrogenation of aromatics, hindered by the stable π-conjugated phenyl ring structures, typically requires high temperatures and pressures, making ambient hydrogenation a grand challenge. Herein, we introduce a PdPtRuCuNi high entropy alloy (HEA) nanocatalyst, achieving an exceptional 100% hydrogenation of carbon-carbon unsaturated bonds, including alkynyl and phenyl groups, in solid 1,4-bis(phenylethynyl)benzene (DEB) at 25 °C under ≤1 bar H 2 and solventless condition. This results in a threefold higher hydrogen uptake for DEB-contained composites compared to conventional Pd catalysts, which can only hydrogenate the alkynyl groups with a ~ 27% conversion of DEB. Our experimental results, complemented by theoretical calculations, reveal that PdPtRu alloy is highly active and crucial in enabling the hydrogenation of phenyl groups, while all five elements work synergistically to regulate the reaction rate. Remarkably, this newly developed catalyst also achieves nearly 100% reactivity for ambient hydrogenation of a broad range of aromatics, suggesting its universal effectiveness. Our research uncovers a novel material platform and catalyst design principle for efficient and general hydrogenation. The multi-element synergy in HEA also promises unique catalytic behaviors beyond hydrogenation applications.
研究领域:
化学工程
·
材料科学
·
催化化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2013
·
IF 3.473
Manhong Liu,Qiang Bai,Hailian Xiao,Yanyan Liu,Jun Zhao,William W. Yu
Colloidal platinum–ruthenium bimetallic nanoparticles with 2.3 nm were synthesized in solution and then immobilized on tin dioxide powder to make a supported nanocatalyst (Pt–Ru/SnO 2 ). The immobilized bimetallic nanoparticles had the same size and size distribution as the solution dispersed ones. Selective hydrogenation of o -chloronitrobenzene to o -chloroaniline was performed over the as-prepared Pt–Ru/SnO 2 nanocatalyst without using any solvent; 99.5% selectivity to o -chloroaniline at ∼100% conversion was achieved.
研究领域:
催化化学
·
纳米材料
·
有机合成
·
绿色化学
·
应用化学
✓ 已验证
DOI
高影响因子
STAR Protocols
·
2023
·
IF 0
Yuejiao Li,Lisha Wu,Yajun Ding,Zhong-Shuai Wu
Summary The commercial mass production of bifunctional oxygen catalysts with high activity and stability is critical for constructing high-performance lithium-oxygen (Li-O 2 ) batteries, but remains challenging. Herein, we describe a protocol for the scalable fabrication of a 2D bifunctional electrocatalyst of Pt/RuO 2 /graphene by spatial confinement strategy and elaborately evaluate its oxygen reduction/evolution reactions for advanced Li-O 2 batteries. We then detail the synthesis steps for preparing materials followed by assembly and evaluation of the three-electrode systems and coin-type Li-O 2 batteries. For complete details on the use and execution of this protocol, please refer to Li et al. (2023). 1
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Qihao Wang,Yusen Chen,Xingchao Zang,Hongdong Li,Weiping Xiao,Yingxia Zong,Guangying Fu,Jinsong Wang,Zexing Wu,Lei Wang
A breakdown of the Sabatier principle is essential for the substantial improvement of the catalytic performance of the hydrogen evolution reaction (HER). This can be achieved by alternating the support and electronic metal support interaction (EMSI). Herein, ZrO 2 supported Ru and Pt (Pt-Ru/ZrO 2 ) with EMSI is designed through ultrafast microwave-plasma (60 s) approach. Pt-Ru/ZrO 2 requires only 33 mV overpotential to reach 10 mA cm −2 in alkaline HER, which is 6.3 times the mass activity of the benchmark Pt/C. HER performance is enhanced in the presence of EMSI because it optimizes the hydrogen adsorption and desorption processes, improves charge transfer and improves the kinetics of water dissociation. In addition, the assembled anion exchange membrane (AEM) electrolysis cell maintains long-term stability for more than 150 h at 1 A cm −2 , demonstrating a sustained catalytic effect. This work offers a novel design approach for developing electrocatalysts with remarkable performance when subjected to high-current–density conditions of industrial scenarios
研究领域:
化学
·
材料科学
·
电催化
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2017
·
IF 4.233
Qing Qing Xia,Lian Ying Zhang,Zhi Liang Zhao,Chang Ming Li
Uniform Pt 1 Ru 0.5 Sn 0.5 ternary alloy nanoparticles are in situ deposited on reduced graphene oxide (Pt 1 Ru 0.5 Sn 0.5 -RGO) through its functional groups and defects as nucleation sites to greatly electrocatalyze ethanol oxidation reaction for much higher mass current densities, larger apparent specific current densities and better stability than commercial Pt-C catalyst (Pt-C(commer)). Mechanistic studies indicate that the excellent electrocatalytic activity and anti-poisoning are resulted from a strong ligand effect of the ternary alloy components, in which the charge transfer is boosted while decreasing the density of states close to the Fermi level of Pt to reduce bond energy between Pt and CO-like adsorbates for greatly improved anti-poisoning ability. This work holds a great promise to fabricate a high performance anode catalyst with a low Pt loading for direct ethanol fuel cells.
研究领域:
材料科学
·
电化学
·
能源科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Shuhan Lu,Jiao He,He Jiang,Yixiao Wang,Ruirui Hu,Xiang Gong,Bin Wang,Chunhai Yi,Fusheng Yang,Tao Fang
The liquid organic hydrogen carrier (LOHC) technology distinguishes itself among various hydrogen storage technologies owing to its distinctive advantages. However, conventional hydrogenation reaction processes generally necessitate elevated hydrogen pressure (5–8 MPa). This study presents an electrocatalytic hydrogenation reaction (ECH) system utilizing N -methylindole (NMID) as the substrate. The system not only achieves hydrogenation reactions using water as the hydrogen source under ambient pressure, but also attains a selectivity exceeding 70 % for the fully hydrogenated product (8H-NMID) via the synergistic catalytic effects of Pt and Ru. Furthermore, the hydrogenation pathway of NMID was elucidated through in-situ infrared spectroscopy and Gaussian theoretical calculations. This research establishes the feasibility of LOHC hydrogenation through ECH, providing innovative perspectives for LOHC technology applications.
研究领域:
物理化学
·
催化化学
·
能源材料
·
电化学
·
氢储能技术
✓ 已验证
产品关联
DOI
高影响因子
Exploration
·
2025
·Vol. 5
·期 6
·20240410
·
IF 22.5
Gui Chen,Wenjia Zhang,Manchun Wang,Fengling Zhang,Mengliang Zhu,Yan Tang,Yixian Xie,Wen Ma,Peter Timashev,Massimo Bottini,Yingqiu Xie,Xing-Jie Liang,Meng Yu,Zhiqiang Yu
Gas therapy has been limited in its application as a robust standalone antitumor strategy due to the restricted gas production and cytotoxicity. To address this challenge, we employed electrotoxic PtRu composite metal nano-berries (PR) loaded with various therapeutic gas donors to construct a groundbreaking electric field-induced cascade gas therapy (EGT) platform, which generated a great electro-stress storm at tumor sites, exerting electrotoxicity and immunity functions against solid tumors, including those of large volume, through three pathways. Initially, electric field stimulation effectively boosted the release rate and yield of therapeutic gases from the EGT platform. Further, gas molecules reacted with reactive oxygen species (ROS) to either form oxidation coordination (CO and ROS) or generate more potent therapeutic components (RNS produced from ROS and NO), contributing to an electro-stress storm that augmented the cytotoxic potential of the gas components. Subsequently, this electro-stress storm further activated the tumor immune response, identifying and capturing escaped tumor cells, which held significant implications for treating tumors, including non-solid tumors with indistinct boundaries. In summary, the EGT platform leveraged an electro-stress storm to achieve ablation of large volume solid tumors and suppressed metastatic tumors, paving new pathways for gas-based therapeutic strategies.
研究领域:
肿瘤学
·
纳米医学
·
癌症治疗
·
生物电气工程
·
免疫治疗
·
活性物种生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）