Aerobic Epoxidation of Olefin by Platinum Catalysts Supported on Mesoporous Silica Nanoparticles

Munz, Dominik; Wang, Daoyong; Moyer, Megan M.; Webster‐Gardiner, Michael S.; Kunal, Pranaw; Watts, David; Trewyn, Brian G.; Vedernikov, Andrei N.; Gunnoe, T. Brent

doi:10.1021/acscatal.6b01532

Cited by 27 publications

(17 citation statements)

References 99 publications

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“…However, due to their intrinsic physico-chemical properties, the scope of use of MPSNPs include a wide range of applications such as: (i) water decontamination through adsorption of radioactive pollutants (Iqbal and Yun, 2018), separation of dyes (Shinde et al, 2017); (ii) catalysis (Verho et al, 2014;Munz et al, 2016); (iii) delivery of agrochemicals (Yi et al, 2015); (iv) chromatography (Ahmed et al, 2014) to mention a few.…”

Section: Mesoporous Silicon-based Nano-carriers (Mpsnps)mentioning

confidence: 99%

Nanoscale Drug Delivery Systems: From Medicine to Agriculture

Vega-Vásquez

Mosier

Irudayaraj

2020

Front. Bioeng. Biotechnol.

177

107

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The main challenges in drug delivery systems are to protect, transport and release biologically active compounds at the right time in a safe and reproducible manner, usually at a specific target site. In the past, drug nano-carriers have contributed to the development of precision medicine and to a lesser extent have focused on its inroads in agriculture. The concept of engineered nano-carriers may be a promising route to address confounding challenges in agriculture that could perhaps lead to an increase in crop production while reducing the environmental impact associated with crop protection and food production. The main objective of this review is to contrast the advantages and disadvantages of different types of nanoparticles and nano-carriers currently used in the biomedical field along with their fabrication methods to discuss the potential use of these technologies at a larger scale in agriculture. Here we explain what is the problem that nano-delivery systems intent to solve as a technological platform and describe the benefits this technology has brought to medicine. Also here we highlight the potential drawbacks that this technology may face during its translation to agricultural applications, based on the lessons learned so far from its use for biomedical purposes. We discuss not only the characteristics of an ideal nano-delivery system, but also the potential constraints regarding the fabrication including technical, environmental, and legal aspects. A key motivation is to evaluate the potential use of these systems in agriculture, especially in the area of plant breeding, growth promotion, disease control, and post-harvest quality control. Further, we highlight the importance of a rational design of nano-carriers and identify current research gaps to enable scale-up relevant to applications in the treatment of plant diseases, controlled release of fertilizers, and plant breeding.

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Section: Mesoporous Silicon-based Nano-carriers (Mpsnps)mentioning

confidence: 99%

Nanoscale Drug Delivery Systems: From Medicine to Agriculture

Vega-Vásquez

Mosier

Irudayaraj

2020

Front. Bioeng. Biotechnol.

177

107

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“…The bimolecular deactivation of a catalyst can be stopped using catalyst immobilization, which has been used successfully in our recent development of (dpms)Pt‐based catalysts for aerobic olefin epoxidation . Other potential approaches to counteract bimolecular catalyst deactivation may involve introducing sterically protecting groups near the reactive metal center.…”

Section: Resultsmentioning

confidence: 99%

Novel Sulfonated CNN Pincer Ligands for Facile C−H Activation at a Pt(II) Center

Watts

Wang

Zavalij

et al. 2017

Israel Journal of Chemistry

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Two novel sulfonated CNN‐pincer ligands 1b and 1c and the corresponding chloro and aqua complexes K[CNNLPtCl] and CNNLPt(H2O), 3b–3c and 2b–2c, were prepared and fully characterized including single crystal X‐ray diffraction. Along with the previously described complexes 2a and 3a, the derivatives of a CNN pincer ligand 1a, these complexes form a family of structurally similar compounds where the pincer core rigidity increases in the series 2a (3a)<2b (3b)<2c (3c), as deduced from their XRD data. The increased ligand rigidity affects the aqua ligand dissociation energy of the CNNLPt(H2O) complexes, as it follows from DFT calculations and as is reflected in the increased reactivity of the aqua complexes 2a, 2b and 2c in processes that involve aqua ligand loss. Among these processes the formation of the presumed dinuclear complexes CNNL2Pt2 and, importantly, catalytic C−D bond cleavage in C6D6 were studied in 2,2,2‐trifluoroethanol solutions. The C−D bond cleavage reactivity was quantified as the rate of H/D exchange between C6D6 and CF3CH2OH at 80 °C.

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“…Besides applications in biomedicine, Li et al prepared pinhole-free Au@SiO 2 nanoparticles as photocatalysts and sensing probes and revealed the design rules for engineering efficient plasmon photocatalysts . Dominik et al report mesoporous silica nanoparticles (MSNP)-supported PtII as a heterogeneous catalyst that was used for the efficient aerobic oxidation of norbornene . Recently, quite a few review articles have systematically summarized the synthesis methods and applications of the core–shell structures, in particular those with hollow cavities, , which indicate the tremendous potential of such complex nanoarchitectures.…”

Section: Introductionmentioning

confidence: 99%

“…21 Dominik et al report mesoporous silica nanoparticles (MSNP)-supported PtII as a heterogeneous catalyst that was used for the efficient aerobic oxidation of norbornene. 22 Recently, quite a few review articles have systematically summarized the synthesis methods and applications of the core−shell structures, in particular those with hollow cavities, 23,24 which indicate the tremendous potential of such complex nanoarchitectures. At present, the methods used to fabricate such core−shell mesoporous hollow architectures can be mainly classified into a template-assisted method, a self-assembly method, and a postgrafting method.…”

Section: ■ Introductionmentioning

confidence: 99%

Mesoporous Nanostructures Encapsulated with Metallic Nanodots for Smart SERS Sensing

Liu

Yang

et al. 2020

ACS Appl. Mater. Interfaces

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In virtue of uniform mesopores and core–shell nanoarchitectures, metallic nanodot-encapsulated hollow mesoporous nanostructures have shown promising potential in various applications. However, their fabrication with versatile tunability of the encapsulated metallic content has been a challenge. Herein, we have prepared metallic nanodot-encapsulated hollow mesoporous silica nanoparticles (M-HMSNPs) with adjustable inner metallic components. The sacrificial template of polystyrene (PS) nanoparticles precoated with metals (Au/Ag/Pt) is fully wrapped with mesoporous silica (mSiO2). The metallic nanodots are formed during the template removal process by calcination. The type and content of the encapsulated nanodots can be readily and precisely controlled by the initially deposited metallic layers. We demonstrate the application of the gold (Au) nanodot-loaded HMSNPs (denoted Au-HMSNPs) as smart surface-enhanced Raman spectroscopy (SERS) probes, which can screen between big molecules and small analytes. With the aid of a Raman reporter, the SERS probe can successfully quantify H2O2, which is used to distinguish cancer cells in vitro. Further integrated with enzymes, the SERS chips of specificity are prepared and used to detect corresponding substrates of glucose and uric acid, responsively. Besides SERS sensing, the current strategy can inspire future development of many other M-HMSNPs for various applications such as catalysis, energy storage, theranostics, etc.

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Aerobic Epoxidation of Olefin by Platinum Catalysts Supported on Mesoporous Silica Nanoparticles

Cited by 27 publications

References 99 publications

Nanoscale Drug Delivery Systems: From Medicine to Agriculture

Nanoscale Drug Delivery Systems: From Medicine to Agriculture

Novel Sulfonated CNN Pincer Ligands for Facile C−H Activation at a Pt(II) Center

Mesoporous Nanostructures Encapsulated with Metallic Nanodots for Smart SERS Sensing

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