Photocatalytic hydrogen production from methanol aqueous solution under visible-light using Cu/S–TiO2 prepared by electroless plating method

Zhang, Wenyu; Wang, Shengjun; Li, Jingguo; Yang, Xiaoyong

doi:10.1016/j.catcom.2014.10.029

Cited by 39 publications

(7 citation statements)

References 30 publications

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“…Additionally, there is a prominent diffraction peak at a 2θ value of approximately 42.95 • , which corresponds to the (111) crystal planes of metallic copper (JCPDS#04-0836). Furthermore, the presence of a sharp peak at a 2θ value of around 24.89 • may indicate the presence of graphite-like carbon resulting from the graphitization of polymer NFs [31]. The absence of a peak in the detection of CuS could be attributed to the thermal degradation of CuS into metallic copper and sulfur at elevated temperatures in a vacuum system containing an argon atmosphere.…”

Section: Characterization Resultsmentioning

confidence: 99%

Synthesis of Copper/Sulfur Co-Doped TiO2-Carbon Nanofibers as Catalysts for H2 Production via NaBH4 Hydrolysis

Abutaleb

2023

Inorganics

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Copper/sulfur co-doped titanium dioxide-carbon nanofibers (Cu,S-codoped TiO2 NPs, decorated-CNFs) catalysts were synthesized using the electrospinning process to produce composite nanofibers (NFs). These composite NFs were utilized for the hydrolysis of sodium borohydride (SBH) to generate hydrogen gas (H2), taking advantage of their catalytic properties. The experimental results demonstrated that using 100 mg of composite NFs yielded the highest catalytic activity for H2 production, generating 79 mL of H2 gas within 6 min at 25 °C and 1000 revolutions per minute (rpm) using 1 mmol of SBH. As the catalyst dosage was reduced from 100 mg to 75, 50, and 25 mg, the reaction time increased by 9, 13, and 18 min, respectively. Kinetic studies revealed that the reaction rate followed a first-order reaction, indicating a direct proportionality between the rate of reaction and the catalyst amount. Additionally, it was observed that the concentration of SBH had no influence on the reaction rate, suggesting a zero-order reaction. Increasing the reaction temperature resulted in a reduced reaction time. The activation energy was determined to be 26.16 kJ mol−1. The composite NFs maintained their superior performance over five iterations. These findings suggest that composite nanofibers have the potential to serve as a cost-effective alternative to expensive catalysts in hydrogen production.

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Section: Characterization Resultsmentioning

confidence: 99%

Synthesis of Copper/Sulfur Co-Doped TiO2-Carbon Nanofibers as Catalysts for H2 Production via NaBH4 Hydrolysis

Abutaleb

2023

Inorganics

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“…1). It is believed that the produced sulfur was adsorbed in the form of sulfate ions into the TiO 2 lattice [15], although FE-SEM-EDX and TEM-EDX confirmed the presence of sulfur in the synthesis nanofibers.…”

Section: Figure 3a and B Indicate That The Average Diameters Of The Pmentioning

confidence: 93%

Cu 0 /S-doped TiO 2 nanoparticles-decorated carbon nanofibers as novel and efficient photocatalyst for hydrogen generation from ammonia borane

Yousef

Brooks

El-Halwany

et al. 2016

Ceramics International

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“…A scavenger is a substance added to a chemical reaction or mixture in order to remove or inactivate the effect of impurities and unwanted reaction products from another donor. The donors researched so far are both organic and inorganic species such as ethanol [44], methanol [104], propanol [105], lactic acid [8], and formic acid [16]. All these donors are very effective in improving hydrogen productivity [27].…”

Section: Presence Of a Scavenger In Photo-oxidation/reduction Mechanismmentioning

confidence: 99%

“…Using Cu 2+ as a dopant of TiO 2 catalyst increased the photocatalytic degradation of acid orange 7 (AO7) [109] and tartrazine [45]. The reason is that Cu 2+ acts as a scavenger of electrons to form Cu + , enhancing the oxidation of the substrate [44,104].…”

Section: Metallic Dopingmentioning

confidence: 99%

Enhancing Photocatalytic Properties of TiO2 Photocatalyst and Heterojunctions: A Comprehensive Review of the Impact of Biphasic Systems in Aerogels and Xerogels Synthesis, Methods, and Mechanisms for Environmental Applications

Tinoco Navarro,

Jaroslav

2023

Gels

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This review provides a detailed exploration of titanium dioxide (TiO2) photocatalysts, emphasizing structural phases, heterophase junctions, and their impact on efficiency. Key points include diverse synthesis methods, with a focus on the sol-gel route and variants like low-temperature hydrothermal synthesis (LTHT). The review delves into the influence of acid-base donors on gelation, dissects crucial drying techniques for TiO2 aerogel or xerogel catalysts, and meticulously examines mechanisms underlying photocatalytic activity. It highlights the role of physicochemical properties in charge diffusion, carrier recombination, and the impact of scavengers in photo-oxidation/reduction. Additionally, TiO2 doping techniques and heterostructures and their potential for enhancing efficiency are briefly discussed, all within the context of environmental applications.

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Photocatalytic hydrogen production from methanol aqueous solution under visible-light using Cu/S–TiO2 prepared by electroless plating method

Cited by 39 publications

References 30 publications

Synthesis of Copper/Sulfur Co-Doped TiO2-Carbon Nanofibers as Catalysts for H2 Production via NaBH4 Hydrolysis

Synthesis of Copper/Sulfur Co-Doped TiO2-Carbon Nanofibers as Catalysts for H2 Production via NaBH4 Hydrolysis

Cu 0 /S-doped TiO 2 nanoparticles-decorated carbon nanofibers as novel and efficient photocatalyst for hydrogen generation from ammonia borane

Enhancing Photocatalytic Properties of TiO2 Photocatalyst and Heterojunctions: A Comprehensive Review of the Impact of Biphasic Systems in Aerogels and Xerogels Synthesis, Methods, and Mechanisms for Environmental Applications

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