Academic Journal
Unusual, hierarchically structured composite of sugarcane pulp bagasse biochar loaded with Cu/Ni bimetallic nanoparticles for dye removal
| العنوان: | Unusual, hierarchically structured composite of sugarcane pulp bagasse biochar loaded with Cu/Ni bimetallic nanoparticles for dye removal |
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| المؤلفون: | Tang, Mengqi, Snoussi, Youssef, Bhakta, Arvind, El Garah, Mohamed, Khalil, Ahmed, Ammar, Souad, Chehimi, Mohamed |
| المساهمون: | Université Paris Cité (UPCité), Laboratoire des Systèmes Mécaniques et d'Ingénierie Simultanée (LASMIS), Université de Technologie de Troyes (UTT), National Research Centre Giza, Egypt |
| المصدر: | ISSN: 0013-9351. |
| بيانات النشر: | HAL CCSD Elsevier |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | Saccharum officinarum biochar bimetallic nanoalloy porous materials Fenton-like reaction water treatment, Saccharum officinarum, biochar, bimetallic nanoalloy, porous materials, Fenton-like reaction, water treatment, [CHIM]Chemical Sciences |
| الوصف: | International audience ; Biochar-supported nanocatalysts emerged as unique materials for environmental remediation. Herein, sugarcane pulp bagasse (SCPB) was wet-impregnated with Cu(NO 3) 2 3H 2 O and Ni(NO 3) 2 6H 2 O, then pyrolyzed at 500 °C, under N 2 , for 1 hour. We specifically focused on sugarcane pulp instead of SCB and biochar materials. The metal nitrate to biomass ratio was set at 0.5, 1, and 2 mmol/g, with Cu/Ni initial ratio = 1. The process provided hierarchically structured porous biochar, topped with evenly dispersed 40 nm-sized CuNi alloy nanoparticles (SCPBB@CuNi). The biochar exhibited an unusual fishing net-like structure induced by nickel, with slits having a length in the 3-12 μm range. Such a fishing net-like porous structure was obtained without any harsh acidic or basic treatment of the biomass. It was induced, during pyrolysis, by the nanocatalysts or their precursors. The CuNi nanoparticles form true alloy as proved by XRD, and are prone to agglomeration at high initial metal nitrate concentration (2 mmol/g). Stepwise metal loading was probed by XPS versus the initial metal nitrate concentration. This is also reflected in the thermal gravimetric analyses. The SCPBB@CuNi / H 2 O 2 (catalyst dose: 0.25 g/L) system served for the catalyzed removal of Malachite Green (MG), Methylene Blue (MB), and Methyl Orange (MO) dyes (concentration= 0.01 mmol/L). Both single and mixed dye solutions were treated in this advanced oxidation process (AOP). The dyes were removed in less than 30 min for MG and 3 h for MB, respectively, but 8 h for MO, therefore showing selectivity for the degradation of MG, under optimized degradation conditions. The catalysts could be collected with a magnet and reused three times, without any significant loss of activity (~ 85 %). AOP conditions did not induce any nanocatalyst leaching. To sum up, we provide a simple wet impregnation route that permitted to design highly active Fenton-like biochar@CuNi composite catalyst for the degradation of organic pollutants, under ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | hal-04310167; https://hal.science/hal-04310167; https://hal.science/hal-04310167/document; https://hal.science/hal-04310167/file/SCBP%20biochar-CuNi_Final_2023%2005%2020.pdf |
| DOI: | 10.1016/j.envres.2023.116232 |
| الاتاحة: | https://hal.science/hal-04310167 https://hal.science/hal-04310167/document https://hal.science/hal-04310167/file/SCBP%20biochar-CuNi_Final_2023%2005%2020.pdf https://doi.org/10.1016/j.envres.2023.116232 |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.1856F5B1 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.envres.2023.116232 |
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