Enhanced Catalytic Hydrogenation Activity and Selectivity of Pt-MxOy/Al2O3 (M = Ni, Fe, Co) Heteroaggregate Catalysts by in Situ Transformation of PtM Alloy Nanoparticles

2013 ◽  
Vol 117 (14) ◽  
pp. 7294-7302 ◽  
Author(s):  
Xiangdong Wang ◽  
Hongbo Yu ◽  
Dayin Hua ◽  
Shenghu Zhou
Keyword(s):  
Catalytic Hydrogenation ◽  
Alloy Nanoparticles ◽  
Hydrogenation Activity

Catalytic asymmetric hydrogenation reaction by in situ formed ultra-fine metal nanoparticles in live thermophilic hydrogen-producing bacteria

Nanoscale ◽  
2021 ◽  
Author(s):  
Wei Bing ◽  
Faming Wang ◽  
Yuhuan Sun ◽  
Jinsong Ren ◽  
Xiaogang Qu
Keyword(s):  
Metal Nanoparticles ◽  
Catalytic Hydrogenation ◽  
Asymmetric Hydrogenation ◽  
Environmentally Friendly ◽  
Hydrogenation Reaction ◽  
Highly Efficient ◽  
Hydrogenation Reactions ◽  
Live Bacteria ◽  
Catalytic Asymmetric Hydrogenation

An environmentally friendly biomimetic strategy has been presented and validated for the catalytic hydrogenation reaction in live bacteria. In situ formed ultra-fine metal nanoparticles can realize highly efficient asymmetric hydrogenation reactions.

Robust In Situ Magnetic Resonance Imaging of Heterogeneous Catalytic Hydrogenation with and without Hyperpolarization

ChemCatChem ◽  
2018 ◽  
Author(s):  
Kirill Viktorovich Kovtunov ◽  
Dmitry Lebedev ◽  
Alexandra Svyatova ◽  
Ekaterina V. Pokochueva ◽  
Igor P. Prosvirin ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Catalytic Hydrogenation ◽  
Resonance Imaging ◽  
Heterogeneous Catalytic ◽  
Heterogeneous Catalytic Hydrogenation

Catalytic Hydrogenation of Arenes in Water Over In Situ Generated Ruthenium Nanoparticles Immobilized on Carbon

ChemCatChem ◽  
2017 ◽  
Vol 9 (11) ◽  
pp. 1930-1938 ◽  
Author(s):  
Ambikesh Dhar Dwivedi ◽  
Rohit Kumar Rai ◽  
Kavita Gupta ◽  
Sanjay Kumar Singh
Keyword(s):  
Catalytic Hydrogenation ◽  
Ruthenium Nanoparticles

In Situ Catalytic Hydrogenation of Biomass-Derived Methyl Levulinate to γ-Valerolactone in Methanol

ChemSusChem ◽  
2015 ◽  
Vol 8 (9) ◽  
pp. 1601-1607 ◽  
Author(s):  
Xing Tang ◽  
Zheng Li ◽  
Xianhai Zeng ◽  
Yetao Jiang ◽  
Shijie Liu ◽  
...  
Keyword(s):  
Catalytic Hydrogenation ◽  
Methyl Levulinate

scholarly journals Biocompatible Electrochemical Sensor Based on Platinum-Nickel Alloy Nanoparticles for In Situ Monitoring of Hydrogen Sulfide in Breast Cancer Cells

Nanomaterials ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 258
Author(s):  
Asit Kumar Panda ◽  
Murugan Keerthi ◽  
Rajalakshmi Sakthivel ◽  
Udesh Dhawan ◽  
Xinke Liu ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Hydrogen Sulfide ◽  
Electrochemical Sensor ◽  
Cancer Cells ◽  
Breast Cancer Cells ◽  
In Situ Monitoring ◽  
Quantitative Detection ◽  
Alloy Nanoparticles ◽  
Ptni Alloy

Hydrogen sulfide (H2S), an endogenous gasotransmitter, is produced in mammalian systems and is closely associated with pathological and physiological functions. Nevertheless, the complete conversion of H2S is still unpredictable owing to the limited number of sensors for accurate and quantitative detection of H2S in biological samples. In this study, we constructed a disposable electrochemical sensor based on PtNi alloy nanoparticles (PtNi NPs) for sensitive and specific in situ monitoring of H2S released by human breast cancer cells. PtNi alloy NPs with an average size of 5.6 nm were prepared by a simple hydrothermal approach. The conversion of different forms of sulfides (e.g., H2S, HS−, and S2−) under various physiological conditions hindered the direct detection of H2S in live cells. PtNi NPs catalyze the electrochemical oxidation of H2S in a neutral phosphate buffer (PB, pH 7.0). The PtNi-based sensing platform demonstrated a linear detection range of 0.013–1031 µM and the limit of detection was 0.004 µM (S/N = 3). Moreover, the PtNi sensor exhibited a sensitivity of 0.323 μA μM−1 cm−2. In addition, the stability, repeatability, reproducibility, and anti-interference ability of the PtNi sensor exhibited satisfactory results. The PtNi sensor was able to successfully quantify H2S in pond water, urine, and saliva samples. Finally, the biocompatible PtNi electrode was effectively employed for the real-time quantification of H2S released from breast cancer cells and mouse fibroblasts.

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