Porous three-dimensional network of Pd–Cu aerogel toward formic acid oxidation

Douk, Abdollatif Shafaei; Farsadrooh, Majid; Damanigol, Farzane; Moghaddam, Alireza Ansari; Saravani, Hamideh; Noroozifar, Meissam

doi:10.1039/c8ra03718c

Cited by 40 publications

(35 citation statements)

References 39 publications

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“…Electrocatalytic formic oxidation (FOR) reaction, which can also serve as the anodic reaction in a fuel cell, has been studied over a library of NMAs on the basis of Pt-Ag, Pd-Cu, Ag-Au-Pd, etc. [22,87,94] As illustrated in Figure 11j,k, Ag 34 Au 33 Pd 33 sponges displayed high performance exceeding that of Ag 50 Pd 50 sponges, Pd sponges, and Pd NPs, which was claimed to root in the synergy provided by different metals such as alloying effects and increasing grain-grain interfaces. [22] Similar to other electrocatalytic oxidation reactions, a rapid current decay was observed during long-term operation, which could be attributed to surface blocking by accumulated intermediates in situ generated during the reactions.…”

Section: Electrocatalytic Oxidation Reactionsmentioning

confidence: 99%

“…Electrocatalytic formic oxidation (FOR) reaction, which can also serve as the anodic reaction in a fuel cell, has been studied over a library of NMAs on the basis of Pt–Ag, Pd–Cu, Ag–Au–Pd, etc . As illustrated in Figure j,k, Ag 34 Au 33 Pd 33 sponges displayed high performance exceeding that of Ag 50 Pd 50 sponges, Pd sponges, and Pd NPs, which was claimed to root in the synergy provided by different metals such as alloying effects and increasing grain–grain interfaces .…”

Section: Applicationsmentioning

confidence: 99%

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Engineering Self‐Supported Noble Metal Foams Toward Electrocatalysis and Beyond

Hübner

et al. 2019

Advanced Energy Materials

107

111

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Noble metals, despite their expensiveness, display irreplaceable roles in widespread fields. To acquire novel physicochemical properties and boost the performance‐to‐price ratio for practical applications, one core direction is to engineer noble metals into nanostructured porous networks. Noble metal foams (NMFs), featuring self‐supported, 3D interconnected networks structured from noble‐metal‐based building blocks, have drawn tremendous attention in the last two decades. Inheriting structural traits of foams and physicochemical properties of noble metals, NMFs showcase a variety of interesting properties and impressive prospect in diverse fields, including electrocatalysis, heterogeneous catalysis, surface‐enhanced Raman scattering, sensing and actuation, etc. A number of NMFs have been created and versatile synthetic approaches have been developed. However, because of the innate limitation of specific methods and the insufficient understanding of formation mechanisms, flexible manipulation of compositions, structures, and corresponding properties of NMFs are still challenging. Thus, the correlations between composition/structure and properties are seldom established, retarding material design/optimization for specific applications. This review is devoted to a comprehensive introduction of NMFs ranging from synthesis to applications, with an emphasis on electrocatalysis. Challenges and opportunities are also included to guide possible research directions in this field and promote the interest of interdisciplinary scientists.

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Section: Electrocatalytic Oxidation Reactionsmentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

Engineering Self‐Supported Noble Metal Foams Toward Electrocatalysis and Beyond

Hübner

et al. 2019

Advanced Energy Materials

107

111

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“…57 Recently, Lu et al 48 performed the electroreduction of CO 2 over Pd-Cu bimetallic aerogels and investigated the underlying mechanism, where the Pd 83 Cu 17 aerogel is found to display a remarkably high faradic efficiency (80.0%) toward methanol production ( Figures 5B and 5C). Other electrocatalytic processes, including glucose oxidation, 36,45 formic acid oxidation, 40,69 and borohydride oxidation, 52 have also been demonstrated over diverse NMAbased catalysts. Even though most efforts have been applied in electrocatalysis, the systematic investigation of the structure-performance relationship is sporadic, thereby hindering the on-demand design and optimization of NMFs.…”

Section: Catalysismentioning

confidence: 99%

Emerging Noble Metal Aerogels: State of the Art and a Look Forward

Fan

et al. 2019

Matter

106

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Noble metal aerogels (NMAs), as the most important class of noble metal foams (NMFs), appear as emerging functional porous materials in the field of materials science. Combining the irreplaceable roles of noble metals in certain scenarios, as well as monolithic and porous features of aerogels, NMAs can potentially revolutionize diverse fields, such as catalysis, plasmonics, and biology. Despite profound progress, grand challenges remain in their fabrication process, including the efficient structure control, the comprehensive understanding of the formation mechanisms, and the generality of the fabrication strategies, thus inevitably retarding the material design and optimization. This Perspective focuses on the key progress, especially of the fabrication strategies for NMAs during the last two decades, while other NMFs are also succinctly introduced. Challenges and opportunities are summarized to highlight the unexploited space and future directions in expectation of stimulating the broad interest of interdisciplinary scientists.

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“…Pt‐based aerogels are versatile electrochemical catalysts, showing excellent catalytic activity in numerous reactions, such as oxygen reduction reaction, and formic acid and alcohol oxidation . Pd‐based aerogels show excellent catalytic performance in the oxidation of alcohol and formic acid . Au‐based aerogels exhibit high activity for the oxidation of glucose, indicating the possibility for glucose sensors .…”

Section: Preparation and Classification Of Aerogelsmentioning

confidence: 99%

“…[9,124] Pd-based aerogels show excellent catalytic performance in the oxidation of alcohol and formic acid. [48,125] Au-based aerogels exhibit high activity for the oxidation of glucose, indicating the possibility for glucose sensors. [126] Ag-based aerogels show controllable optical transparency, porosity, and surface area by varying the amount of the oxidant used in the gelation process.…”

Section: Inorganic Aerogelsmentioning

confidence: 99%

Versatile Aerogels for Sensors

Yang

Zheng

et al. 2019

Small

119

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Aerogels are unique solid‐state materials composed of interconnected 3D solid networks and a large number of air‐filled pores. They extend the structural characteristics as well as physicochemical properties of nanoscale building blocks to macroscale, and integrate typical characteristics of aerogels, such as high porosity, large surface area, and low density, with specific properties of the various constituents. These features endow aerogels with high sensitivity, high selectivity, and fast response and recovery for sensing materials in sensors such as gas sensors, biosensors and strain and pressure sensors, among others. Considerable research efforts in recent years have been devoted to the development of aerogel‐based sensors and encouraging accomplishments have been achieved. Herein, groundbreaking advances in the preparation, classification, and physicochemical properties of aerogels and their sensing applications are presented. Moreover, the current challenges and some perspectives for the development of high‐performance aerogel‐based sensors are summarized.

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Porous three-dimensional network of Pd–Cu aerogel toward formic acid oxidation

Abstract: New self-assembled architectures have received great interest in nanotechnology, and are a highly desired target in recent studies.

Cited by 40 publications

References 39 publications

Engineering Self‐Supported Noble Metal Foams Toward Electrocatalysis and Beyond

Engineering Self‐Supported Noble Metal Foams Toward Electrocatalysis and Beyond

Emerging Noble Metal Aerogels: State of the Art and a Look Forward

Versatile Aerogels for Sensors

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