RuTe2 Decorated Carbon Nanofiber Electrocatalyst Synthesized via a Sustainable Method for Electrochemical Hydrogen Evolution in Acidic and Alkaline Electrolytes

Mehtap Aygün Çağlar

Makale detayları

RuTe2 Decorated Carbon Nanofiber Electrocatalyst Synthesized via a Sustainable Method for Electrochemical Hydrogen Evolution in Acidic and Alkaline Electrolytes

Yazarlar:

Mehtap Aygün Çağlar

Yayıncı:

Igdir University

Ana Başlıklar:

Katalitik Aktivite | Kompozit ve Hibrit Malzemeler

Dergi:

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.15 Issue 3, pp.1019-1031

Belge Tipi:

Makale

Yayın Tarihi:

1/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001356715

pISSN:

2536-4618

Anahtar kelimeler:

Özet:

 A novel ruthenium ditelluride RuTe2 catalyst supported by graphitized carbon nanofibers GNF has been synthesized developing a straightforward, environmentally friendly, and cost-effective method. Characterization studies indicated that the formation of crystalline RuTe2 nanoparticles uniformly immobilized at the step edges within the internal cavity of GNF support, with an average nanoparticle size of 4 nm, as well as the external surface of GNF. The electrocatalytic performance of RuTe2GNF in the hydrogen evolution reaction was investigated in both acidic and alkaline mediums. The results were compared with those of commercial platinum nanoparticles on activated carbon PtC, as well as with hollow GNF and GNF-supported metallic ruthenium nanoparticles. The results indicated that GNF-supported RuTe2 exhibited a comparable HER performance to state-of-the-art PtC catalyst and suppressed the HER activity of other control materials. Increased HER activity was attributed to the confined space of step edges enabled the robust and active catalytic sites and facilitated the HER in a nanoscale environment. Additionally, the highly conductive GNF support functioned as an effective electrical bridge between the nanoparticles and the macroscopic electrode. This configuration not only facilitated efficient charge transfer between the electrolyte and the catalyst but also enhanced overall performance. As a result, RuTe2GNF served as a bifunctional catalyst in both mediums, facilitating enhanced proton adsorptiondesorption process and effectively overcoming water dissociation barriers. This study paves the way for developing novel sustainable ruthenium chalcogenide-based catalysts that are alternatives to traditional platinum catalysts, highlighting their potential use for efficient hydrogen generation.

 A novel ruthenium ditelluride RuTe2 catalyst supported by graphitized carbon nanofibers GNF has been synthesized developing a straightforward, environmentally friendly, and cost-effective method. Characterization studies indicated that the formation of crystalline RuTe2 nanoparticles uniformly immobilized at the step edges within the internal cavity of GNF support, with an average nanoparticle size of 4 nm, as well as the external surface of GNF. The electrocatalytic performance of RuTe2GNF in the hydrogen evolution reaction was investigated in both acidic and alkaline mediums. The results were compared with those of commercial platinum nanoparticles on activated carbon PtC, as well as with hollow GNF and GNF-supported metallic ruthenium nanoparticles. The results indicated that GNF-supported RuTe2 exhibited a comparable HER performance to state-of-the-art PtC catalyst and suppressed the HER activity of other control materials. Increased HER activity was attributed to the confined space of step edges enabled the robust and active catalytic sites and facilitated the HER in a nanoscale environment. Additionally, the highly conductive GNF support functioned as an effective electrical bridge between the nanoparticles and the macroscopic electrode. This configuration not only facilitated efficient charge transfer between the electrolyte and the catalyst but also enhanced overall performance. As a result, RuTe2GNF served as a bifunctional catalyst in both mediums, facilitating enhanced proton adsorptiondesorption process and effectively overcoming water dissociation barriers. This study paves the way for developing novel sustainable ruthenium chalcogenide-based catalysts that are alternatives to traditional platinum catalysts, highlighting their potential use for efficient hydrogen generation.

 A novel ruthenium ditelluride RuTe2 catalyst supported by graphitized carbon nanofibers GNF has been synthesized developing a straightforward, environmentally friendly, and cost-effective method. Characterization studies indicated that the formation of crystalline RuTe2 nanoparticles uniformly immobilized at the step edges within the internal cavity of GNF support, with an average nanoparticle size of 4 nm, as well as the external surface of GNF. The electrocatalytic performance of RuTe2GNF in the hydrogen evolution reaction was investigated in both acidic and alkaline mediums. The results were compared with those of commercial platinum nanoparticles on activated carbon PtC, as well as with hollow GNF and GNF-supported metallic ruthenium nanoparticles. The results indicated that GNF-supported RuTe2 exhibited a comparable HER performance to state-of-the-art PtC catalyst and suppressed the HER activity of other control materials. Increased HER activity was attributed to the confined space of step edges enabled the robust and active catalytic sites and facilitated the HER in a nanoscale environment. Additionally, the highly conductive GNF support functioned as an effective electrical bridge between the nanoparticles and the macroscopic electrode. This configuration not only facilitated efficient charge transfer between the electrolyte and the catalyst but also enhanced overall performance. As a result, RuTe2GNF served as a bifunctional catalyst in both mediums, facilitating enhanced proton adsorptiondesorption process and effectively overcoming water dissociation barriers. This study paves the way for developing novel sustainable ruthenium chalcogenide-based catalysts that are alternatives to traditional platinum catalysts, highlighting their potential use for efficient hydrogen generation.

 Rutenyum ditellürid RuTe2 katalizörü, grafitize olmuş karbon nanofiberler GNF üzerine dekore edilerek basit, çevre dostu ve düşük maliyetli özgün bir yöntem geliştirerek sentezlendi. Karakterizasyon çalışmaları, kristalin RuTe2 nanopartikül oluşumların hem GNF destek malzemesinin iç kısmındaki kıvrımlı karbon kenarlarında, ortalama 4 nm nanopartikül boyutu ile, hem de GNFnin dış yüzeyinde homojen bir şekilde dağılım gösterdi. RuTe2GNFnin hidrojen evrim reaksiyonundaki elektrokimyasal performansı hem asidik hem de alkali ortamlarda araştırıldı. Sonuçlar, ticari aktif karbon üzerine dekore edilmiş platin nanopartiküllerinin PtC, GNF ve metalik rutenyum nanopartiküllerinin GNF üzerine dekore edildiği malzemelerin HER sonuçlarıyla karşılaştırıldı. Sonuçlar, GNF destekli RuTe2nin son teknoloji PtC katalizörüne benzer bir HER performansı sergilediğini ve diğer kontrol materyallerinin HER aktivitesini bastırdığını gösterdi. Artan HER aktivitesi, HER için nano ölçekli bir ortamda kararlı ve aktif katalitik bölgelerin oluşmasını sağlayan GNF iç kısmındaki kıvrımlı kenarlarının sınırlı alanına atfedildi. Dahası, yüksek iletkenliğe sahip GNF destek malzemesi, nanopartiküller ile makroskobik elektrot arasında etkili bir elektrik köprüsü işlevi gördü. Bu yapılandırma, yalnızca elektrolit ile katalizör arasında verimli yük transferini kolaylaştırmakla kalmadı, aynı zamanda genel performansı da artırdı. Sonuç olarak, RuTe2GNF her iki ortamda da çift işlevli bir katalizör görevi görerek gelişmiş proton adsorpsiyondesorpsiyon sürecini kolaylaştırdı ve suyun elektrokimyasal ayrışma bariyerlerinin etkili bir şekilde aşılması sağlandı. Bu çalışma, geleneksel platin katalizörlerine alternatif olan yeni sürdürülebilir rutenyum kalkojenür bazlı katalizörlerin geliştirilmesinin önünü açmakta ve bunların verimli hidrojen üretimi için potansiyel kullanımlarını vurgulamaktadır.

Makale detayları

RuTe2 Decorated Carbon Nanofiber Electrocatalyst Synthesized via a Sustainable Method for Electrochemical Hydrogen Evolution in Acidic and Alkaline Electrolytes

Yazarlar:

Mehtap Aygün Çağlar

Yayıncı:

Igdir University

Ana Başlıklar:

Katalitik Aktivite | Kompozit ve Hibrit Malzemeler

Dergi:

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.15 Issue 3, pp.1019-1031

Belge Tipi:

Makale

Yayın Tarihi:

1/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001356715

pISSN:

2536-4618

Ruthenium ditelluride

Graphitized carbon nanofibers

1D Hybrid nanomaterials

Hydrogen evolution reaction

ElectrocatalysisRutenyum ditellürid

Grafitize olmuş karbon nanofiber

1D Hibrit nanomalzemeler

Hidrojen üretim reaksiyonu

Elektrokataliz

Sayı

Makale detayları

Yazarlar: Mehtap Aygün Çağlar

Yayıncı: Igdir University

Ana Başlıklar: Katalitik Aktivite | Kompozit ve Hibrit Malzemeler

Dergi: Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.15 Issue 3, pp.1019-1031

Belge Tipi: Makale

Yayın Tarihi: 1/2025

Belge Dili: İngilizce

Document ID (Org No.): 2001356715

pISSN: 2536-4618

Sayı

Yazarlar:

Mehtap Aygün Çağlar

Yayıncı:

Igdir University

Ana Başlıklar:

Katalitik Aktivite | Kompozit ve Hibrit Malzemeler

Dergi:

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.15 Issue 3, pp.1019-1031

Belge Tipi:

Makale

Yayın Tarihi:

1/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001356715

pISSN:

2536-4618