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Chemical Feedstock Recovery through Plastic Pyrolysis: Challenges and Perspectives toward a Circular Economy. 通过塑料热解回收化学原料:对循环经济的挑战和展望。
IF 7.5 2区 化学
ChemSusChem Pub Date : 2025-05-20 DOI: 10.1002/cssc.202500210
Shogo Kumagai, Kazuki Fujiwara, Toru Nishiyama, Yuko Saito, Toshiaki Yoshioka
{"title":"Chemical Feedstock Recovery through Plastic Pyrolysis: Challenges and Perspectives toward a Circular Economy.","authors":"Shogo Kumagai, Kazuki Fujiwara, Toru Nishiyama, Yuko Saito, Toshiaki Yoshioka","doi":"10.1002/cssc.202500210","DOIUrl":"https://doi.org/10.1002/cssc.202500210","url":null,"abstract":"<p><p>Plastics are indispensable in daily life, with both production and waste generation increasing annually. As the world strives for net-zero emissions, advancing plastic recycling technologies has become a global priority. Pyrolytic liquefaction is a promising approach for recovering chemical feedstocks, including fuel fractions, from waste plastics, potentially substituting petroleum resources. Since the 1970s, research on pyrolytic liquefaction has progressed globally, and several industrial-scale plants are now in operation. However, to accelerate the transition to a circular economy, it is crucial to bridge the knowledge gap between lab-scale research and industrial-scale implementation of pyrolysis-liquefaction technologies. This review provides a comprehensive analysis of the current state of plastic recycling, the progress and challenges in cutting-edge lab-scale research on pyrolytic liquefaction, alongside the latest trends in industrial-scale liquefaction projects. It reveals that pyrolytic liquefaction of a wide range of plastics-including halogenated plastics and poly(ethylene terephthalate)-has been extensively studied at the laboratory level. In contrast, industrial-scale operations often focus on more common, easily pyrolyzed plastics and generally avoid the use of catalysts. This highlights the urgent need to develop robust, reusable, and cost-effective catalysts, as well as optimized process designs, to expand the range of plastic feedstocks suitable for industrial-scale pyrolysis plants.</p>","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202500210"},"PeriodicalIF":7.5,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144109219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Simplified preparation of BaAl2O4-ye - y/C oxy-electrides using Pechini approach for ammonia synthesis. 用Pechini法简化制备BaAl2O4-ye -y /C氧电子合成氨。
IF 7.5 2区 化学
ChemSusChem Pub Date : 2025-05-20 DOI: 10.1002/cssc.202500682
Aissam Addou, Amanda Sfeir, Maya Marinova, Hervé Vezin, Sébastien Royer, Jean-Philippe Dacquin, Said Laassiri
{"title":"Simplified preparation of BaAl2O4-ye - y/C oxy-electrides using Pechini approach for ammonia synthesis.","authors":"Aissam Addou, Amanda Sfeir, Maya Marinova, Hervé Vezin, Sébastien Royer, Jean-Philippe Dacquin, Said Laassiri","doi":"10.1002/cssc.202500682","DOIUrl":"https://doi.org/10.1002/cssc.202500682","url":null,"abstract":"<p><p>Electride based materials are among the most active catalysts for ammonia synthesis, with a strong potential for application in the development of green ammonia synthesis. However, their synthesis often requires complicated reaction conditions limiting their scalability. In this study, we present a straightforward and scalable synthesis method for a BaAl2O4-ye-y/C oxy-electride composite via carboxylic acid complexation (pseudo-Pechini) followed by carbothermal reduction. The resulting composite exhibits significant surface area, of ~41 m2 g-1, which is considerably higher than the electrides prepared by solid-state synthesis. Upon loading with ruthenium, the BaAl2O4-ye-y/C composite demonstrated excellent catalytic activity for ammonia synthesis, achieving rates of 3090 μmol g-1catalyst h-1 with 0.6Ru/BaAl2O4-ye-y/C, and 3737 μmol g-1catalyst h-1 with 1.1Ru/BaAl2O4-ye-y/C at mild reaction conditions (400 °C and 1 bar). Comprehensive characterization through XRD, Raman spectroscopy, SEM, and STEM-EDS confirmed the textural and structural properties of the catalyst, while iodometric titration method and EPR analysis confirmed the electride-like nature of the resulting composite. The results reported in this work highlight a straightforward approach for the design of electride-based composite material displaying superior catalytic properties for green ammonia synthesis.</p>","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202500682"},"PeriodicalIF":7.5,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144109263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Recent Advances and Perspectives of Anode-Free Sodium Metal Batteries. 无阳极钠金属电池的研究进展与展望。
IF 7.5 2区 化学
ChemSusChem Pub Date : 2025-05-19 DOI: 10.1002/cssc.202500590
Qingbao Wang, Yaoyang Zhang, Wenyu Wei, Zijun Pan, Junmin Ge, Weihua Chen
{"title":"Recent Advances and Perspectives of Anode-Free Sodium Metal Batteries.","authors":"Qingbao Wang, Yaoyang Zhang, Wenyu Wei, Zijun Pan, Junmin Ge, Weihua Chen","doi":"10.1002/cssc.202500590","DOIUrl":"https://doi.org/10.1002/cssc.202500590","url":null,"abstract":"<p><p>Anode-free sodium metal batteries (AFSMBs) break through the traditional structural design, cancel the use of active materials on the anode side, and raise the energy density of the battery to its limit while also simplifying the manufacturing process to save production costs, making it an ideal system for high energy density. However, its current practical commercial application is still constrained by short cycle life and low coulombic efficiency. This review focuses on the latest research advances in the design of AFSMBs structures and systems in recent years,including the fundamentals of the operation and the problems that exist. Strategies for the design of current collectors and electrolytes as well as some advanced characterization methods are highlighted. Finally, the summary and outlook on this emerging field are further discussed, with a view to providing guidance for the future design of high energy density AFSMBs.</p>","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202500590"},"PeriodicalIF":7.5,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144092329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chalcogen Bond-Assisted Iodine Adsorption from Water by Hydrophobic Receptor Se4Me-PF6. 疏水受体Se4Me-PF6对水中碘的硫键辅助吸附。
IF 7.5 2区 化学
ChemSusChem Pub Date : 2025-05-19 DOI: 10.1002/cssc.202500751
Sourav Pramanik, Abu S M Islam, Iti Ghosh, Pradyut Ghosh
{"title":"Chalcogen Bond-Assisted Iodine Adsorption from Water by Hydrophobic Receptor Se<sub>4</sub>Me-PF<sub>6</sub>.","authors":"Sourav Pramanik, Abu S M Islam, Iti Ghosh, Pradyut Ghosh","doi":"10.1002/cssc.202500751","DOIUrl":"10.1002/cssc.202500751","url":null,"abstract":"<p><p>The removal of molecular iodine (I<sub>2</sub>/I<sub>3</sub> <sup>-</sup>) from aqueous environments is of great importance due to its biological relevance and environmental concerns, particularly in nuclear waste management. Herein, a hydrophobic tetrapodal receptor Se<sub>4</sub>Me-PF<sub>6</sub>, which exhibits iodine adsorption from an aqueous phase via chalcogen bonding (ChB) interaction, is demonstrated. In the solution phase, NMR studies reveal that Se<sub>4</sub>Me-PF<sub>6</sub> selectively recognizes iodide (I<sup>-</sup>) over other anions. On the other hand, in the solid state, selenoimidazolium building units of Se<sub>4</sub>Me-PF<sub>6</sub> facilitate self-assembly into a porous 1D supramolecular ChB framework, enabling efficient iodine adsorption. Consequently, Se<sub>4</sub>Me-PF<sub>6</sub> has propelled the rapid adsorption of iodine, with a high kinetic rate of 2.10 × 10<sup>-</sup> <sup>3</sup> g mg<sup>-</sup> <sup>1</sup> min<sup>-</sup> <sup>1</sup>, while maintaining its effectiveness under competitive environmental conditions, including pH variations and the presence of interfering anions. Mechanistic investigations using XPS and density functional theory studies indicate that iodine capture occurs via a combination of ChB interactions and electrostatic forces provided by the selenoimidazolium motifs. Importantly, Se<sub>4</sub>Me-PF<sub>6</sub> demonstrates its potential as a stationary phase for column-based iodine removal, highlighting its applicability in real-world scenarios. Thus, these findings offer a promising approach for developing iodine adsorbent materials.</p>","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e2500751"},"PeriodicalIF":7.5,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144092307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tailoring CuFeOx-Based Catalytic Oxygen Carrier for Lattice Oxygen-Induced Oxidative Steam Reforming of Methanol. 基于CuFeOx的点阵氧诱导甲醇氧化蒸汽重整催化氧载体的研制。
IF 7.5 2区 化学
ChemSusChem Pub Date : 2025-05-19 DOI: 10.1002/cssc.202500599
Feng Tan, Zhiqiang Sun
{"title":"Tailoring CuFeO<sub>x</sub>-Based Catalytic Oxygen Carrier for Lattice Oxygen-Induced Oxidative Steam Reforming of Methanol.","authors":"Feng Tan, Zhiqiang Sun","doi":"10.1002/cssc.202500599","DOIUrl":"10.1002/cssc.202500599","url":null,"abstract":"<p><p>Methanol reforming demonstrates the possibility of realizing hydrogen storage, transport, and on-site supply. Nevertheless, this approach faces limitations due to outlet CO generation and catalyst degradation. This work fabricates a series of CuFeO<sub>x</sub>-based catalytic oxygen carriers (COC) with various Cu-to-Fe ratios for lattice oxygen-induced methanol reforming, which goes through lattice oxygen-induced methanol reforming  →  catalytic steam methanol reforming → oxidative steam methanol reforming. It is revealed that the lattice oxygen mobility can be tuned by modulating the Cu-to-Fe mole ratios. Of the synthesized COCs, Cu<sub>2</sub>Fe<sub>3</sub> shows the highest catalytic activity. It is supposed that CuO in COC provides lattice oxygen with catalytically site of Cu<sup>0</sup>, while CuFe<sub>5</sub>O<sub>8</sub> contributes relatively stable Cu<sup>+</sup>, synergistically inducing highly efficient oxidative steam reforming of methanol. Specifically, a H<sub>2</sub> production rate of 93.9 mmol·H<sub>2</sub>·h<sup>-1</sup> g<sup>-1</sup>·COC·at 220 °C is achieved with relatively stable redox looping within 20 cycles. The in situ diffuse reflectance infrared Fourier transform spectroscopy results indicate that the bridged formate species is identified as the primary intermediate under lattice oxygen-induced conditions, and the reaction pathway is anticipated to be CH<sub>3</sub>OH* → CH<sub>3</sub>O* → CH<sub>2</sub>O* → HCOO* → H<sub>2</sub> + CO<sub>2</sub>.</p>","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e2500599"},"PeriodicalIF":7.5,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144092334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Elemental trade-off in the selective Electrooxidation of Ethylene Glycol on Palladium-Silver/Nickel Electrodes. 乙二醇在钯银/镍电极上选择性电氧化的元素权衡。
IF 7.5 2区 化学
ChemSusChem Pub Date : 2025-05-19 DOI: 10.1002/cssc.202500724
Noë I Watson, Amelie Fehler, Marit Stoop, Bart van den Bosch, Gadi Rothenberg
{"title":"Elemental trade-off in the selective Electrooxidation of Ethylene Glycol on Palladium-Silver/Nickel Electrodes.","authors":"Noë I Watson, Amelie Fehler, Marit Stoop, Bart van den Bosch, Gadi Rothenberg","doi":"10.1002/cssc.202500724","DOIUrl":"https://doi.org/10.1002/cssc.202500724","url":null,"abstract":"<p><p>We study the synthesis and properties of PdAg electrodes coated on Ni foam and their application in the selective electro-oxidation of ethylene glycol to glycolate. This reaction is a route to glycolic acid, which is a key component of biodegradable packaging. Using a combination of cyclic voltammetry, EDX and XRD analysis, we find that a 3:1 Pd:Ag ratio gives optimal results. We show that the oxidation of ethylene glycol on palladium occurs between 0.3 and 1.2 V vs. RHE, and depends on the presence of a Pd(0) active site. Electrochemical Impedance Spectroscopy experiments show that the charge-transfer resistance (RCT) follows the same trend as EGOPd activity, with the 3:1 Pd:Ag electrode having the lowest RCT. Electrolysis with this electrode at 0.705 V vs. RHE, where Pd is reduced, results in glycolate production with no overoxidation to formate or oxalate. We then move to a flow setup under industrial conditions, and show that the Pd-Ni electrode yields >80% FE to glycolate for over 140 h. Long-term electrode deactivation can be overcome in this system by a periodic self-refresh cycle.</p>","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202500724"},"PeriodicalIF":7.5,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144101164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Fluorine Doping on the Electrochemistry and Structural Stability of Single-Particle LiNiO2. 氟掺杂对单粒子LiNiO2电化学及结构稳定性的影响。
IF 7.5 2区 化学
ChemSusChem Pub Date : 2025-05-19 DOI: 10.1002/cssc.202500300
Elhoucine ELmaataouy, Majid El Kassaoui, Mohamed ELmouhinni, Kei Kubota, Abdlewahed Chari, Mohamed Aqil, Adil Sghiouri, Jones Alami, Omar Mounkachi, Mouad Dahbi
{"title":"Effect of Fluorine Doping on the Electrochemistry and Structural Stability of Single-Particle LiNiO<sub>2</sub>.","authors":"Elhoucine ELmaataouy, Majid El Kassaoui, Mohamed ELmouhinni, Kei Kubota, Abdlewahed Chari, Mohamed Aqil, Adil Sghiouri, Jones Alami, Omar Mounkachi, Mouad Dahbi","doi":"10.1002/cssc.202500300","DOIUrl":"10.1002/cssc.202500300","url":null,"abstract":"<p><p>It is widely acknowledged that single-particle LiNiO<sub>2</sub> represents an attractive option as a cobalt-free cathode material, given its high capacity and average working voltage. However, prolonged cell cycling has been observed to result in a decline in performance and structural deterioration in LiNiO<sub>2</sub> cathodes. Anion doping has recently been the subject of considerable interest due to the numerous benefits it offers, including the elimination of the need for active element replacement and increased structural stability. In this study, a fluorine-doped single-particle LiNiO<sub>2</sub> is prepared via a hydrothermal synthesis assisted by ball milling, resulting in a stable charge/discharge process at a current density of 0.2C, with a capacity retention of 90% after 60 cycles and first discharge capacity of 220 mAh g<sup>-1</sup>. The incorporation of fluorine is confirmed through cross-sectional scanning electron microscopy and X-ray photoelectron spectroscopy, which reveal a correlation between fluorine doping and the partial reduction of Ni<sup>3+</sup> to Ni<sup>2+</sup>. The impact of fluorine doping on the structural stability of LiNiO<sub>2</sub> is investigated using in-situ X-ray diffraction XRD and density functional theory calculations. Consequently, the F doping strategy demonstrates the dual benefit of high capacity and cycle retention in single-particle LiNiO<sub>2</sub> cathodes.</p>","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e2500300"},"PeriodicalIF":7.5,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144092323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reciprocal Ternary Molten Salts Enable the Direct Upcycling of Spent Lithium-Nickel-Manganese-Cobalt Oxide (NMC) Mixtures to Make NMC 622. 互惠三元熔盐可以直接升级回收废锂-镍-锰-钴氧化物(NMC)混合物,以制造NMC 622。
IF 7.5 2区 化学
ChemSusChem Pub Date : 2025-05-15 DOI: 10.1002/cssc.202500571
Tao Wang, Xin Wang, Huimin Luo, Juntian Fan, Qingju Wang, Zhenzhen Yang, Yaocai Bai, Kae Fink, Patrick Walker, Ilias Belharouak, Sheng Dai
{"title":"Reciprocal Ternary Molten Salts Enable the Direct Upcycling of Spent Lithium-Nickel-Manganese-Cobalt Oxide (NMC) Mixtures to Make NMC 622.","authors":"Tao Wang, Xin Wang, Huimin Luo, Juntian Fan, Qingju Wang, Zhenzhen Yang, Yaocai Bai, Kae Fink, Patrick Walker, Ilias Belharouak, Sheng Dai","doi":"10.1002/cssc.202500571","DOIUrl":"10.1002/cssc.202500571","url":null,"abstract":"<p><p>Cathode active material is the most valuable component of spent lithium-ion batteries, accounting for ≈30% of their overall value. Direct recycling of cathode materials involves recovering, regenerating, and reusing them without breaking down their chemical structure. This approach maximizes the added value of the cathode compound and reduces manufacturing costs by avoiding the need for virgin material production. However, one key challenge in scaling direct recycling from lab to industry is the requirement for highly purified cathode materials, contrasting with the low purity of black mass generated from battery shredding. No efficient separation process currently exists to isolate different lithium-nickel-manganese-cobalt oxides (NMCs) from each other. Thus, direct recycling technologies that can operate with mixtures of multiple NMC stoichiometries will be best-suited for industrial adoption. This study explores the direct recycling of NMC mixtures into NMC 622 using a \"reciprocal ternary molten salts (RTMS)\" system. Ionothermal relithiation and upcycling within the RTMS system successfully restore the layered structure, lithium content, and electrochemical performance of degraded NMCs, yielding results comparable to pristine NMC 622 (P-NMC 622).</p>","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e2500571"},"PeriodicalIF":7.5,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Photocatalytic singlet oxygen generation and electrocatalytic alkaline HER activity of p-type Bi2Sn2O7/carbon dots nanocomposites. p型Bi2Sn2O7/碳点纳米复合材料的光催化单线态制氧和电催化碱性HER活性。
IF 7.5 2区 化学
ChemSusChem Pub Date : 2025-05-15 DOI: 10.1002/cssc.202500676
R K Dutta, Gajendra Ram, Shashikant Last Name Unknown, Nitika Last Name Unknown
{"title":"Photocatalytic singlet oxygen generation and electrocatalytic alkaline HER activity of p-type Bi2Sn2O7/carbon dots nanocomposites.","authors":"R K Dutta, Gajendra Ram, Shashikant Last Name Unknown, Nitika Last Name Unknown","doi":"10.1002/cssc.202500676","DOIUrl":"https://doi.org/10.1002/cssc.202500676","url":null,"abstract":"<p><p>We present here a scheme for production of singlet oxygen in aqueous medium by pyrochlore based nanocomposite of p-type bismuth stannate (Bi2Sn2O7) and carbon dots (Bi2Sn2O7/CD), and demonstrate its applications as photocatalysts for tetracycline degradation, and as electrocatalyst for alkaline hydrogen evolution reaction via water splitting. The batches of Bi2Sn2O7/CD are synthesized by hydrothermal method with varying carbon dot contents and they are thoroughly characterized to obtain their structural, morphological, textural and compositional information. The carbon dots in the nanocomposite offered photosensitizing behaviour. About 96% photocatalytic degradation of tetracycline hydrochloride is achieved in 40 min (k = 0.072 min-1), which is 3.6 times higher than pristine Bi2Sn2O7. The rate of singlet oxygen production in the reaction medium has been studied with respect to sunlight exposure time by EPR, which is described as a key for enhanced photocatalytic degradation. In addition, the batch of Bi2Sn2O7/(CD)3.0 as an electrocatalyst for alkaline hydrogen evolution reaction (HER) is revealed from low overpotential 136 mV at 10 mA cm-2 and Tafel slope of 41 mV dec-1 in 1M KOH, corresponding to high mass activity of 22.2 A g-1 and high specific activity 0.018 mA cm-2 at η=350 mV. The mechanism of alkaline HER is discussed.</p>","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202500676"},"PeriodicalIF":7.5,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advances in Hydrogen-Driven Bicarbonate Conversion to Formic Acid and Formate Salts. 氢驱动碳酸氢盐转化为甲酸和甲酸盐的研究进展。
IF 7.5 2区 化学
ChemSusChem Pub Date : 2025-05-14 DOI: 10.1002/cssc.202500483
Ayushi Tyagi, Shaifali Bhardwaj, Anil Kumar Sinha, Mahak Dhiman
{"title":"Advances in Hydrogen-Driven Bicarbonate Conversion to Formic Acid and Formate Salts.","authors":"Ayushi Tyagi, Shaifali Bhardwaj, Anil Kumar Sinha, Mahak Dhiman","doi":"10.1002/cssc.202500483","DOIUrl":"10.1002/cssc.202500483","url":null,"abstract":"<p><p>According to a January 2025 report by the UK Met Office, carbon dioxide (CO<sub>2</sub>) levels are expected to reach 429.6 ppm in May, marking the highest concentration in over 2 million years. This alarming rise has intensified global efforts to mitigate climate change through carbon capture and utilization (CCU) technologies. A promising strategy is converting CO<sub>2</sub> into valuable chemicals such as formic acid and formate salts. Formic acid, in particular, is seen as a potential hydrogen carrier, addressing challenges in hydrogen storage and transport. However, the direct hydrogenation of CO<sub>2</sub> to formic acid is thermodynamically challenging due to the high stability. To overcome these barriers, researchers have explored alternative pathways, such as the reduction of bicarbonate (HCO<sub>3</sub> <sup>-</sup>), which is more reactive and easier to handle. Bicarbonate can be sourced from CO<sub>2</sub>-rich streams like flue gases or seawater, simplifying capture and conversion. This review explores hydrogen-driven bicarbonate conversion via catalytic methods: electrocatalysis, thermocatalysis, photocatalysis, homogeneous, and enzymatic catalysis. Each uses distinct energy inputs and offers unique advantages. While electrocatalysis shows 90% Faradaic efficiency, photocatalysis and enzymatic approaches remain limited by quantum yields and scalability. The review outlines key advances, challenges, and future directions to enhance these technologies for a sustainable, carbon-neutral future.</p>","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e2500483"},"PeriodicalIF":7.5,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144075137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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