Oxygen reduction catalyzed by a water-soluble binuclear copper(ii) complex from a neutral aqueous solution

CoTPPS is an efficient electrocatalyst for H2 generation from neutral phosphate buffer solution. It features quantitative Faradaic efficiency with a TOF of ∼1.83 s−1 and a TON of 1.9 × 104 mol of H2 per mole of catalyst at an applied potential of −1.29 V (vs. SHE).

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Photocatalytic hydrogen evolution from neutral aqueous solution by a water-soluble cobalt(ii) porphyrin

Sustainable Energy & Fuels ◽

10.1039/c8se00253c ◽

2018 ◽

Vol 2 (9) ◽

pp. 2036-2043 ◽

Cited By ~ 19

Author(s):

Belete B. Beyene ◽

Chen-Hsiung Hung

Keyword(s):

Aqueous Solution ◽

Solar Energy ◽

Hydrogen Evolution ◽

Energy Demand ◽

Water Soluble ◽

Global Energy ◽

Photocatalytic Hydrogen Evolution ◽

Promising Strategy ◽

Efficient Storage ◽

Neutral Aqueous Solution

Efficient storage of solar energy via light-driven hydrogen evolution is an attractive and promising strategy to address challenges related to increasing global energy demand.

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Hydrogen production in a neutral aqueous solution with a water-soluble copper complex

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2016.11.103 ◽

2017 ◽

Vol 42 (7) ◽

pp. 4202-4207 ◽

Cited By ~ 14

Author(s):

Zhi-Juan Xin ◽

Si Liu ◽

Cheng-Bo Li ◽

You-Jia Lei ◽

Dong-Xu Xue ◽

...

Keyword(s):

Aqueous Solution ◽

Hydrogen Production ◽

Copper Complex ◽

Water Soluble ◽

Neutral Aqueous Solution

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A water-soluble glucose-functionalized cobalt(iii) complex as an efficient electrocatalyst for hydrogen evolution under neutral conditions

Dalton Transactions ◽

10.1039/c4dt02951h ◽

2015 ◽

Vol 44 (4) ◽

pp. 1526-1529 ◽

Cited By ~ 9

Author(s):

Xuguang Yin ◽

Cuibo Liu ◽

Sifei Zhuo ◽

You Xu ◽

Bin Zhang

Keyword(s):

Aqueous Solution ◽

Hydrogen Production ◽

Hydrogen Evolution ◽

Water Soluble ◽

Neutral Aqueous Solution ◽

Neutral Conditions

A water-soluble glucose functionalized cobalt(iii) complex [CoIII(dmgH)2(py-glucose)Cl] is active and stable for electrocatalytic hydrogen production in neutral aqueous solution.

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Study on the photostability of water-soluble Zn(II) and Al(III) phthalocyanines in aqueous solution

Journal of Porphyrins and Phthalocyanines ◽

10.1142/s1088424610002835 ◽

2010 ◽

Vol 14 (11) ◽

pp. 968-974 ◽

Cited By ~ 22

Author(s):

Nina A. Kuznetsova ◽

Dmitry A. Makarov ◽

Olga A. Yuzhakova ◽

Ludmila I. Solovieva ◽

Oleg L. Kaliya

Keyword(s):

Aqueous Solution ◽

Aqueous Solutions ◽

Singlet Oxygen ◽

Narrow Range ◽

Water Soluble ◽

Zinc Phthalocyanine ◽

Quantum Yields ◽

Type Ii ◽

Positively Charged ◽

Dye Structure

The photodegradation of a series of water-soluble Zn(II) and Al(III) phthalocyanines has been studied in aerobic aqueous solutions. The photobleaching quantum yields of zinc phthalocyanine derivatives range from 2.2 × 10-4 for octacarboxy- to 1.5 × 10-5 for ZnPc , bearing 16 positively charged groups on periphery. Their aluminum counterparts are more photostable and photobleach with quantum yields in the narrow range (0.75 ÷ 2 × 10-6). The pH dependences of the photobleaching quantum yields for aluminum phthalocyanines show enhanced photodegradation for molecules with deprotonated axial H2O ligand. Some aspects of the mechanism of dyes photodegradation were studied and discussed. It was found that contribution to photooxidation of type II pathways depends upon a particular dye structure. Thus, no contribution of singlet oxygen to the photooxidation of cationic phthalocyanines has been found, even though singlet oxygen is involved in the photodegradation of negatively charged phthalocyanines.

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A Rapid Micro Method to Quantitate Free Carboxyl Groups in Proteins in Neutral Aqueous Solution by Using a New Water-soluble Carbodiimide

Agricultural and Biological Chemistry ◽

10.1080/00021369.1985.10866753 ◽

1985 ◽

Vol 49 (2) ◽

pp. 521-522

Author(s):

Masatoshi Kato

Keyword(s):

Aqueous Solution ◽

Water Soluble ◽

Carboxyl Groups ◽

Neutral Aqueous Solution ◽

Free Carboxyl

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Molecular Interaction, Chain Conformation, and Rheological Modification during Electrospinning of Hyaluronic Acid Aqueous Solution

Membranes ◽

10.3390/membranes10090217 ◽

2020 ◽

Vol 10 (9) ◽

pp. 217

Author(s):

Hao Chen ◽

Xuhong Chen ◽

Huiying Chen ◽

Xin Liu ◽

Junxing Li ◽

...

Keyword(s):

Aqueous Solution ◽

Molecular Weight ◽

Hyaluronic Acid ◽

Aqueous Solutions ◽

Molecular Model ◽

Chain Conformation ◽

Water Soluble ◽

Crystal Formation ◽

Scanning Calorimetry ◽

Chain Entanglement

Most of natural water-soluble polymers are difficult to electrospin due to their specific chain conformation in aqueous solution, which limits their applications. This study investigated the effects of polyethylene oxide (PEO) on the electrospinning of hyaluronic acid (HA) in HA/PEO aqueous solutions. The rheological properties of HA/PEO aqueous solutions showed polymer chain entanglement in HA was the essential factor affecting its electrospinnability. Wide-angle X-ray scattering and differential scanning calorimetry analyses of a PEO crystal showed different crystallization behavior of the PEO chain with different molecular weight, which indicates different interaction with HA. A schematic molecular model has been proposed to explain the effect of PEO on the chain conformation of HA along with the relationship between electrospinnability and chain entanglement. PEO with a relatively high molecular weight with limited crystal formation formed extensive chain entanglements with HA, while PEO with relatively low molecular weight weakened the interactions among HA chains. The findings of this study provide a wide perspective to better understand the electrospinning mechanisms of natural polyelectrolytes and usage in tissue engineering.

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