Photocatalytic reduction of aromatic azides to amines using CdS and CdSe nanoparticles

Warrier, M.; Lo, Michael; Monbouquette, Harold G.; Garcı́a-Garibay, Miguel A.

doi:10.1039/b404268a

Cited by 79 publications

(33 citation statements)

References 48 publications

(11 reference statements)

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“…CdS nanoparticles have a photocatalytic effect on the reduction of aromatic azides to form aromatic amines in water (Scheme 9b). [37] With the existence of some other functional groups on the aromatic ring, the products can be maintained in high selectivities. Furthermore, the position of substituent has slight influence on the reaction.…”

Section: Binary and Ternary Metal Sulfidesmentioning

confidence: 99%

Metal Sulfide Photocatalysis: Visible‐Light‐Induced Organic Transformations

2019

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metal sulfides belong to an important subgroup of semiconductor photocatalysts that could promote a variety of valuable redox reactions under mild conditions. One notable merit of metal sulfides is their relatively smaller bandgaps than metal oxides, which in turn make sure that many of them can directly utilize visible light. Historically, the deployment of metal sulfides for visible-light-induced organic transformations took place shortly after the genesis of the research field of heterogeneous photocatalysis. In this review, we primarily focus on recent state-of-the-art advancements of metal sulfide photocatalysis aimed at visible-light-induced selective organic transformations. Interests in this specific branch of photocatalysis have been rekindled due to the new methods for materials synthesis; the pursuit of new mechanisms; or the integration of metal sulfides with metal oxides, metal nanoparticles or other emerging materials. Thus we categorize them into four sections according to the different strategies in developing novel or more efficient organic processes. Binary and ternary metal sulfides, usually associated with new materials synthesis and mechanistic insights, can be used directly for visible-lightinduced organic transformations. This is the basis of other further developments and will be introduced firstly. Next, the cooperation between metal sulfides and metal oxides or metal nanoparticles can be conducive to many photocatalytic systems. These developments will be discussed in the next two ensuing sections. Furthermore, the integration of metal sulfides with recent developed emerging materials such as metalorganic frameworks (MOFs), graphene and graphitic carbon nitride (g-C 3 N 4 ) will be discussed in another section to highlight the importance of merging metal sulfides with these materials. We attempt to keep an impartial panorama of these four distinctive sections even though the phases of development are quite different among sections, leaving plenty of room for the future expansion of this burgeoning area.

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Section: Binary and Ternary Metal Sulfidesmentioning

confidence: 99%

Metal Sulfide Photocatalysis: Visible‐Light‐Induced Organic Transformations

2019

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“…In these cases, CdS nanorods or nanowires have been synthesized in ethylenediamine (en) by solvothermal conditions at high temperature (120-200°C) and long aging time (5-24 h) [15][16][17][18][19]. In addition, high activities of CdS in photocatalytic reduction reactions have been also reported [20,21]. In this way, in recent works we have studied the influence of the ethylenediamine (en) on the photoreducting properties of CdS nanorod for 4-nitrophenol reduction.…”

Section: Introductionmentioning

confidence: 99%

Enhanced blue-light photocatalytic H2 production using CdS nanofiber

Hernández-Gordillo

Tzompantzi

Oros-Ruíz

et al. 2014

Catalysis Communications

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“…Miguel and co-workers, for example, applied CdS and CdSe QDs in the photocatalytic reduction of aromatic azides to amines. [4] Niemeyer and Ipe employed QD/enzyme nanohybrids for photocatalyzing the transformation of myristic acid to a-and b-hydroxymyristic acid. [5] Most recently, Ford and co-workers found that 1,1-dithiooxalate bound to the surfaces of CdSe QDs can be converted into carbon disulfide under aerobic conditions through oxidative cleavage.…”

mentioning

confidence: 99%

Mechanistic Insights into the Interface‐Directed Transformation of Thiols into Disulfides and Molecular Hydrogen by Visible‐Light Irradiation of Quantum Dots

et al. 2014

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Quantum dots (QDs) offer new and versatile ways to harvest light energy. However, there are few examples involving the utilization of QDs in organic synthesis. Visible-light irradiation of CdSe QDs was found to result in virtually quantitative coupling of a variety of thiols to give disulfides and H2 without the need for sacrificial reagents or external oxidants. The addition of small amounts of nickel(II) salts dramatically improved the efficiency and conversion through facilitating the formation of hydrogen atoms, thereby leading to faster regeneration of the ground-state QDs. Mechanistic studies reveal that the coupling reaction occurs on the QD surfaces rather than in solution and offer a blueprint for how these QDs may be used in other photocatalytic applications. Because no sacrificial agent or oxidant is necessary and the catalyst is reusable, this method may be useful for the formation of disulfide bonds in proteins as well as in other systems sensitive to the presence of oxidants.

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Photocatalytic reduction of aromatic azides to amines using CdS and CdSe nanoparticles

Cited by 79 publications

References 48 publications

Metal Sulfide Photocatalysis: Visible‐Light‐Induced Organic Transformations

Metal Sulfide Photocatalysis: Visible‐Light‐Induced Organic Transformations

Enhanced blue-light photocatalytic H2 production using CdS nanofiber

Mechanistic Insights into the Interface‐Directed Transformation of Thiols into Disulfides and Molecular Hydrogen by Visible‐Light Irradiation of Quantum Dots

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