Template-free synthesis of uniform magnetic mesoporous TiO2 nanospindles for highly selective enrichment of phosphopeptides

Li, Wei; Liu, Minbo; Feng, Shouhua; Li, Xiaomin; Wang, Jinxiu; Shen, Dengke; Li, Yuhui; Sun, Zhenkun; Elzatahry, Ahmed A.; Lu, Haojie; Zhao, Dongyuan

doi:10.1039/c4mh00030g

Cited by 52 publications

(31 citation statements)

References 39 publications

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“…33 The obtained mesoporous TiO 2 core-shell nanospheres were denoted as Fe 3 O 4 @SiO 2 @mTiO 2 . The resultant products (denoted as Fe 3 O 4 @SiO 2 @TiO 2 ) were separated and collected, followed by an additional ultrasonic posthydrolysis process in water, according to that reported previously.…”

Section: Synthesis Of Uniform Mesoporous Tio 2 Core-shell Nanostructurementioning

confidence: 99%

Uniform core–shell structured magnetic mesoporous TiO₂ nanospheres as a highly efficient and stable sonocatalyst for the degradation of bisphenol-A

Qiu

Thokchom

et al. 2015

J. Mater. Chem. A

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The contribution is equal.Uniform core-shell structured magnetic mesoporous TiO 2 (Fe 3 O 4 @SiO 2 @mTiO 2 ) nanospheres have been fabricated via a kinetic-controlled Stöber method. A silica interlayer with a thickness of ~ 25 nm was introduced as a passivation barrier to prevent the photodissociation, as well as increase the thermal stability of the core-shell materials. After being crystallized at 600 °C under nitrogen, the resultant nanospheres (Fe 3 O 4 @SiO 2 @mTiO 2 -600) possess well-defined core-shell structures with a high magnetic susceptibility (~ 17.0 emu g -1 ) and exhibit uniform mesopores (~ 5.2 nm), large BET surface area (~ 216 m 2 g -1 ) and pore volume (~ 0.20 cm 3 g -1 ). More importantly, the magnetic mesoporous TiO 2 has been demonstrated for the first time as a high efficient and stable sonocatalyst for the degradation of bisphenol-A. The pseudo first-orderreaction constant of the magnetic mesoporous TiO 2 is measured to be 0.164 min -1 , which is 1.49 and 2.27 times higher than that of P25 and ultrasound alone, respectively. The remarkable performance is attributed to the fast mass diffusion, large adsorption rate and enhanced hydroxyl-2 radical-production rate. More importantly, the catalysts can be easily recycled within 2 minutes by using an external magnetic field and a constant catalytic activity is retained even after eight cycles. This study paves a promising way for the design and synthesis of magnetic separable sonocatalysts for the degradation of organic pollutants, which is of significant importance for practical applications from both environmental and industrial points of view.

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Section: Synthesis Of Uniform Mesoporous Tio 2 Core-shell Nanostructurementioning

confidence: 99%

Uniform core–shell structured magnetic mesoporous TiO₂ nanospheres as a highly efficient and stable sonocatalyst for the degradation of bisphenol-A

Qiu

Thokchom

et al. 2015

J. Mater. Chem. A

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“…Until now, a large number of macroscopic templates, including biological materials, colloidal crystals and foams, have been used in the design and synthesis of hierarchical porous structures 16 . In fact, hard templates do not always have to be formed before synthesis; it is possible that chemical species (for example, salts, ions and molecules) in the precursor solution, or even the solvent itself, can be transformed into a template in situ by phase separation [25][26][27][28][29] (FIG. 1d).…”

Section: Synthesis Of Mesoporous Materialsmentioning

confidence: 99%

Mesoporous materials for energy conversion and storage devices

2016

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At present, more than 80% of the energy consumed globally is derived from non-renewable fossil fuels such as coal, oil and natural gas. The combustion of these fuels inevitably leads to the emission of CO 2 -a main driver of climate change and other serious environmental effects, including the emission of other dangerous gases. Although mitigating climate change is a multifaceted challenge, one of the pillars of any future low-carbon economy will be a substantially increased dependence on renewable and environmentally friendly energy sources and storage systems. Tremendous progress is being made in developing advanced technologies to meet these challenges. However, to enable the cost-effective, large-scale production of these technologies, further improvement of performance and efficiency is needed. Although unique challenges exist for each technology, the development of functional materials is crucial.Porous solids -in particular, mesoporous solids -are appealing materials in many energy applications owing to their ability to absorb and interact with guest species (including, but not limited to, lithium ions, hydrogen atoms and sulfur molecules) on their outer and inner surfaces, and in the pore spaces 1,2 . According to the International Union of Pure and Applied Chemistry (IUPAC) definition, porous materials are classified into three categories according to their pore sizes: micro porous (<2 nm), mesoporous (2-50 nm) or macro porous (>50 nm). Since the first report of mesoporous silica in the 1990s 3,4 , the variety of mesoporous materials available has rapidly expanded, encompassing a very broad range of compositions.Mesoporous materials have exceptional properties, including ultrahigh surface areas, large pore volumes, tunable pore sizes and shapes, and also exhibit nanoscale effects in their mesochannels and on their pore walls. These features are particularly advantageous for applications in energy conversion and storage [5][6][7][8][9][10] . In principle, high surface areas should provide a large number of reaction or interaction sites for surface or interface-related processes such as adsorption, separation, catalysis and energy storage; however, a high surface area does not necessarily translate to an improved performance in applications. Large pore volumes have shown promise in the loading of guest species and in the accommodation of the expansion and strain relaxation during repeated electrochemical energy storage processes. Uniform and tunable mesopore channels facilitate the transport of atoms, ions and large molecules through the bulk of the material, thereby increasing the number of active sites with high accessibility and overcoming the size restriction encountered with microporous materials. In addition, there are fascinating nanoconfinement effects in the voids of uniform mesochannels, which are advantageous in catalysis and energy storage. 3D nanometre-sized frameworks can produce extraordinary nanoscale effects (that is, surface and quantum effects) that result in mesoporous materials with u...

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“…Up to now, most of sialylated glycopeptides (SGs) enrichment methods are established generally based on chelation interaction between negatively charged SGs and TiO 2 4142, saccharide-protein interaction between glycan moieties and lectins4344, hydrophilic interaction between SGs and hydrophilic chromatographic stationary phases4546, and covalent bond-formation (boronic acid-based materials or hydrazide chemistry reagents)474849. However, each enrichment strategy displays its distinctive merits while usually also suffers from some inherent limitations, which has been well summarized in several excellent reviews25505152.…”

Section: Resultsmentioning

confidence: 99%

Sialic Acid-Responsive Polymeric Interface Material: From Molecular Recognition to Macroscopic Property Switching

Xiong

Jiang

et al. 2017

Sci Rep

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Biological systems that utilize multiple weak non-covalent interactions and hierarchical assemblies to achieve various bio-functions bring much inspiration for the design of artificial biomaterials. However, it remains a big challenge to correlate underlying biomolecule interactions with macroscopic level of materials, for example, recognizing such weak interaction, further transforming it into regulating material’s macroscopic property and contributing to some new bio-applications. Here we designed a novel smart polymer based on polyacrylamide (PAM) grafted with lactose units (PAM-g-lactose0.11), and reported carbohydrate-carbohydrate interaction (CCI)-promoted macroscopic properties switching on this smart polymer surface. Detailed investigations indicated that the binding of sialic acid molecules with the grafted lactose units via the CCIs induced conformational transformation of the polymer chains, further resulted in remarkable and reversible switching in surface topography, wettability and stiffness. With these excellent recognition and response capacities towards sialic acid, the PAM-g-lactose0.11 further facilitated good selectivity, strong anti-interference and high adsorption capacity in the capture of sialylated glycopeptides (important biomarkers for cancers). This work provides some enlightenment for the development of biointerface materials with tunable property, as well as high-performance glycopeptide enrichment materials.

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Template-free synthesis of uniform magnetic mesoporous TiO2 nanospindles for highly selective enrichment of phosphopeptides

Cited by 52 publications

References 39 publications

Uniform core–shell structured magnetic mesoporous TiO₂ nanospheres as a highly efficient and stable sonocatalyst for the degradation of bisphenol-A

Uniform core–shell structured magnetic mesoporous TiO₂ nanospheres as a highly efficient and stable sonocatalyst for the degradation of bisphenol-A

Mesoporous materials for energy conversion and storage devices

Sialic Acid-Responsive Polymeric Interface Material: From Molecular Recognition to Macroscopic Property Switching

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Template-free synthesis of uniform magnetic mesoporous TiO2 nanospindles for highly selective enrichment of phosphopeptides

Cited by 52 publications

References 39 publications

Uniform core–shell structured magnetic mesoporous TiO2 nanospheres as a highly efficient and stable sonocatalyst for the degradation of bisphenol-A

Uniform core–shell structured magnetic mesoporous TiO2 nanospheres as a highly efficient and stable sonocatalyst for the degradation of bisphenol-A

Mesoporous materials for energy conversion and storage devices

Sialic Acid-Responsive Polymeric Interface Material: From Molecular Recognition to Macroscopic Property Switching

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Product

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About

Uniform core–shell structured magnetic mesoporous TiO₂ nanospheres as a highly efficient and stable sonocatalyst for the degradation of bisphenol-A

Uniform core–shell structured magnetic mesoporous TiO₂ nanospheres as a highly efficient and stable sonocatalyst for the degradation of bisphenol-A