Muhammad Zeeshan Abid , Javeria Mansab , Khalid Aljohani , Bassam S. Aljohani , Khezina Rafiq , Abdul Rauf , Ejaz Hussain
{"title":"Scientific insights into the synthesis and catalytic potential of MXene supported metal sulfides for H2 evolution from water splitting†","authors":"Muhammad Zeeshan Abid , Javeria Mansab , Khalid Aljohani , Bassam S. Aljohani , Khezina Rafiq , Abdul Rauf , Ejaz Hussain","doi":"10.1016/j.susmat.2025.e01425","DOIUrl":"10.1016/j.susmat.2025.e01425","url":null,"abstract":"<div><div>Photocatalytic water splitting to produce hydrogen fuel is an effective approach to harvest green energy. Reason is that hydrogen is advantageous source that has inherent potential to deliver higher energy relative to the conventional fuels. Increasing demand for sustainable energy sources has obligate the researchers to find efficient catalysts for hydrogen production. Large–scale and sustainable setup demands, that catalysts must be stable, non-toxic and can progressively work in visible light. Current study has comprehensively evaluated the catalytic progress of MXene/metal sulfides (i.e., MXene/MS) catalysts for hydrogen generation application. Due to exceptional catalytic properties i.e., charges conductivity, suitable band position and tunable work function, aforementioned catalysts have been found ideal for hydrogen generation. Moreover, high response on visible–light, porosity, large surface area, and tunable band structures are the advantageous features of these catalysts. On the other hand, MXene cocatalysts have fascinated the significant interest for the scientists and new researchers. Comprehensive evaluation indicated that although surface sensitivity, charge transfer and active sites are crucial factors but synthesis strategies of catalysts have huge impact on the catalytic performances. For the interest of readers; synthesis, catalytic performances along with mechanistic insights have been evaluated and discussed. On the basis of evaluation it has been concluded that along with synthesis design, structural modifications and use of electron conducting cocatalysts are important for the efficient hydrogen evolution.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01425"},"PeriodicalIF":8.6,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143924250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Catalina Suescun Gonzalez , Aditi Basdeo , Fabio A. Cruz Sanchez , Cécile Nouvel , Joshua M. Pearce , Hakim Boudaoud
{"title":"Strategies for recycling multi-material polymer blends for additive manufacturing","authors":"Catalina Suescun Gonzalez , Aditi Basdeo , Fabio A. Cruz Sanchez , Cécile Nouvel , Joshua M. Pearce , Hakim Boudaoud","doi":"10.1016/j.susmat.2025.e01430","DOIUrl":"10.1016/j.susmat.2025.e01430","url":null,"abstract":"<div><div>The rapid advancement of additive manufacturing (AM) technology, combined with the growing accumulation of plastic waste, has generated significant interest in utilizing materials derived from plastic waste and their composites within the AM industry. This paper examines the methods and approaches currently employed in recycling and blending thermoplastic waste into additive manufacturing feedstocks, aiming to enhance understanding and guide future advancements in this field. A systematic literature review including 82 papers from 2014 to 2024 was performed using the Scopus and Web of Science databases. The review findings indicate that approximately 83 % of the research is concentrated in production of new materials combining various polymer waste with recycled bio-sourced materials, recycled fillers or other additives for property enhancement. The evaluation and characterization of these new materials was carry out mostly using 3D printing, predominantly employing fused filament fabrication technology (63 %). The remaining 17 % focus on the improvement of the printing quality and optimization, development or adaptation of 3D printers for the utilization of new materials, and material reprocessability. This review highlight the need of evaluating the behavior of recycled blends over multiple life cycles, the cost and environmental assessments, and primary end-use applications of these materials, including as well as further development and design of printers.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"44 ","pages":"Article e01430"},"PeriodicalIF":8.6,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143912718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pengyang Zhang , Sohrab Rohani , Liumei Teng , Minyu He , Xi Jin , Qingcai Liu , Shan Ren , Weizao Liu
{"title":"Efficient extraction of valuable metals from spent LiNi0.5Co0.2Mn0.3O2 cathode materials using sodium bisulfate: Parameter optimization and kinetic study","authors":"Pengyang Zhang , Sohrab Rohani , Liumei Teng , Minyu He , Xi Jin , Qingcai Liu , Shan Ren , Weizao Liu","doi":"10.1016/j.susmat.2025.e01424","DOIUrl":"10.1016/j.susmat.2025.e01424","url":null,"abstract":"<div><div>Spent lithium-ion batteries pose significant environmental hazards but also possess high recycling value. In this study, a process for the recovery of valuable metals from spent LiNi<sub>0.5</sub>Co<sub>0.2</sub>Mn<sub>0.3</sub>O<sub>2</sub> cathode materials (NCM523) was proposed by using NaHSO<sub>4</sub> as the sulfation agent. The thermal decomposition of NaHSO<sub>4</sub> and its sulfation roasting process with spent NCM523 were investigated. The findings revealed that NaHSO<sub>4</sub> started decomposing at approximately 200 °C, releasing Na<sub>2</sub>S<sub>2</sub>O<sub>7</sub>. And significant SO<sub>2</sub> gas was emitted after 400 °C, efficiently reducing and sulfating the valuable metals in NCM523. The sulfation roasting parameters were optimized by examining the influences of roasting temperature and the mass ratio of NaHSO<sub>4</sub> to waste cathode materials on the leaching efficiencies of valuable metals. Experimental results indicated that Li was present as Li<sub>2</sub>SO<sub>4</sub> and NaLiSO<sub>4</sub> forms after roasting, while other valuable metals existed in complex forms, mainly as bimetallic composite sulfates. The study found that under optimal conditions, with a NaHSO<sub>4</sub> to waste cathode material mass ratio of 5:1, and roasting at 600 °C for 120 min resulted in the highest leaching efficiencies for valuable metals, with Li at 98.4 %, Co at 97.1 %, Ni at 96.1 %, and Mn at 96 %. Additionally, the non-isothermal kinetic of the roasting process was studied, determining the apparent activation energy of each stage and identifying the controlling steps through the Kissinger-Akahira-Sunose (KAS), Flynn-Wall-Ozawa (FWO), and Starink methods. The mechanisms were elucidated using the Satava-Sestak and Coats-Redfern equations, which identified the fourth stage as the controlling step with an average activation energy of 211.4 kJ/mol, indicating a three-dimensional diffusion model. The results highlighted that utilizing NaHSO<sub>4</sub> roasting for recycling waste cathode materials led to high leaching efficiencies of Li, Co, Ni, and Mn metals at lower temperatures. This aligned well with the principles of efficient and environmentally friendly recycling practices.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"44 ","pages":"Article e01424"},"PeriodicalIF":8.6,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ubaid Ur Rehman , Kashaf Ul Sahar , Chun-Ming Wang
{"title":"Recent advances in the sustainable potential of 2D MBenes for diverse applications: A comprehensive review","authors":"Ubaid Ur Rehman , Kashaf Ul Sahar , Chun-Ming Wang","doi":"10.1016/j.susmat.2025.e01427","DOIUrl":"10.1016/j.susmat.2025.e01427","url":null,"abstract":"<div><div>MBenes, a novel two-dimensional material, has gained wide recognition due to its attractive characteristics. MBenes exhibit the characteristics of metal boride structures, which provide exceptional chemical and structural stability that competes with the well-established MXenes (metal carbide/nitride). Numerous computational studies and pre-experimental results have demonstrated MBenes' significant chemical reactivity, mechanical strength, and high electrical conductivity. These qualities make MBenes a well-suited material for multifarious applications. Therefore, this review discusses various mechanistic approaches and their impacts on the structural features of MBenes, highlighting their distinctive properties that enhance exceptional performance in energy applications. Furthermore, a comprehensive examination of the optical, electrical, magnetic, and electrochemical properties of MBenes has been discussed. Additionally, the broad applicability of MBenes in energy storage, energy conversion, electronics, photonics, thermal management, biomedical, and environmental fields, emphasizes their potential to drive significant advancements. Furthermore, the strengths, limitations, critical challenges, and future research directions of MBenes have been thoroughly examined, as advancing the field demands innovative strategies to optimize the balance between performance, cost-effectiveness, and scalability. Thus, this review investigates the scope and perspective of MBenes in transforming next-generation technologies, highlighting assessments for a sustainable green future.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01427"},"PeriodicalIF":8.6,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143924247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Construction, characterization, and DFT analysis of Li, P co-doped g-C₃N₄ multifunctional materials with boosted performance as photocatalyst and supercapacitor electrode","authors":"Monika Kumari , Naveen Kumar , Raj Kishore Sharma , Seshibe Makgato , Muhammad Tahir , Suresh Kumar , Jogender , Jitender Kumar , Manisha","doi":"10.1016/j.susmat.2025.e01426","DOIUrl":"10.1016/j.susmat.2025.e01426","url":null,"abstract":"<div><div>The present work demonstrates the synthesis and optimization of Li doped g-C<sub>3</sub>N<sub>4</sub> (LCN), P doped g-C<sub>3</sub>N<sub>4</sub> (PCN), and Li, P co-doped g-C<sub>3</sub>N<sub>4</sub> (LPCN) with varied concentrations of Li and P for photocatalysis and energy applications. Characterization results confirmed that P substitutes C and Li-coordinated bonds with the N of the g-C<sub>3</sub>N<sub>4</sub> framework, which improves their light-harvesting capacity, charge separation, and photocatalytic performance. Additionally, this increases conductivity, which leads to better charge storage capacity. The photocatalysis performance was evaluated to photodegrade the cationic dye, Rhodamine B (RhB). The co-doped material LPCN (10 mmol Li and 1 mmol P) achieved the highest photodegradation efficiency of 99.07 % RhB removal in 100 min, and the degradation rate is 22 times that of undoped g-C<sub>3</sub>N<sub>4</sub>. The scavenger study reveals that holes were prominent active species during the degradation process. Further, Li and P co-doped g-C<sub>3</sub>N<sub>4</sub> samples were evaluated for electrochemical performance, which shows that co-doped g-C<sub>3</sub>N<sub>4</sub> gives a specific capacitance of 367.40 F/g at 2 A/g, which is 17 times more than undoped g-C<sub>3</sub>N<sub>4</sub> (21.08 F/g at 2 A/g). The EIS analysis shows that the electrochemically active surface area of LPCN (795 m<sup>2</sup>/g) was 3 times than g-C<sub>3</sub>N<sub>4</sub> (285 m<sup>2</sup>/g) and minimal ion diffusion resistance of LPCN and more efficient charge transfer kinetics, indicating that doping in LPCN provides more active sites and improved ion diffusion pathways, thereby enhancing charge storage capacity. DFT study also supports that doping in g-C<sub>3</sub>N<sub>4</sub> reduces band gap and binding energy, which explains LPCN as an efficient photocatalyst and supercapacitor electrode.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01426"},"PeriodicalIF":8.6,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Recent progress in MOF-based flexible sensors: A review","authors":"Dongming Gong, Xinyu Li, Yan Chen, Tifeng Jiao","doi":"10.1016/j.susmat.2025.e01429","DOIUrl":"10.1016/j.susmat.2025.e01429","url":null,"abstract":"<div><div>MOF-based flexible sensors combine the unique properties of metal-organic frameworks (MOFs)—such as thermal stability, tunable porosity, controllable structure, and high specific surface area—with the adaptability of flexible substrates, which this integration creates sensors with strong potential for applications in sensing technologies and miniaturized electronic devices. This review presents an overview of the synthesis strategies for MOF-based flexible sensors and recent advancements in the applications for wearable devices, healthcare monitoring, and environmental pollutant detection. Simultaneously, current challenges in MOF-based flexible sensor synthesis are also discussed, along with future directions for advancing flexible sensor applications using MOF materials such as enhancing sensor sensitivity, stability and scalability for practical applications, particularly by improving MOF durability under harsh conditions, optimizing functionalization for better selectivity, and refining manufacturing techniques for large-scale production.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"44 ","pages":"Article e01429"},"PeriodicalIF":8.6,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143907041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Feven Kassaye Egualle , Meseret Ethiopia Guye , Anteneh Fufa Baye , Bekelcha T. Gadisa , Hern Kim
{"title":"Synergetic effect of graphitic nitrogen and carbonyl groups in ZnCl2 activated biocarbon: A metal-free catalyst for enhanced reduction of 4-Nitrophenol with redox properties","authors":"Feven Kassaye Egualle , Meseret Ethiopia Guye , Anteneh Fufa Baye , Bekelcha T. Gadisa , Hern Kim","doi":"10.1016/j.susmat.2025.e01421","DOIUrl":"10.1016/j.susmat.2025.e01421","url":null,"abstract":"<div><div>This study explores the chemical activation of banana peels with zinc chloride (ZnCl<sub>2</sub>), aiming to optimize the carbon material's structure and enhance its catalytic properties. The porosity, physico-chemical properties, and structures formed during calcination were controlled by adjusting the mass ratio of ZnCl<sub>2</sub> to banana peel waste. The as-prepared materials were utilized towards the reduction of toxic 4-nitrophenol (4-NP), where an optimum ZnCl<sub>2</sub> activation highly promoted the adsorption of 4-NP on the catalyst surface, leading to a highly efficient reduction process. Characterization analyses revealed the development of graphitic mesoporous structures, nitrogen species, and oxygen groups, which play critical roles in facilitating the reduction reaction. The results demonstrate that the synergistic interaction between graphitic nitrogen and carbonyl groups significantly improved the catalytic performance. The catalytic rate of 4-NP to 4-aminophenol (4-AP) reduction, which was described through the pseudo-first-order kinetics, was determined to be 0.02274 s<sup>−1</sup> for our optimized sample reaching 99.9 % reduction in under only 150 s. Additionally, a turnover frequency (TOF) of 6.66 × 10<sup>−6</sup> mmol mg<sup>−1</sup> s<sup>−1</sup> was achieved, which exceeds most previously reported metal catalysts. Furthermore, its electrochemical properties for 4-NP detection were explored, demonstrating its multifunctionality.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"44 ","pages":"Article e01421"},"PeriodicalIF":8.6,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143903725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhaojing Huang , Ruihao Niu , Zongyun Du , Qipu Xin , Jihui Lao , Haohao Hu , Jing Yu , Lu Qian , Qihe Chen , Xiao Huang , Donghong Liu , Enbo Xu
{"title":"Cold-temperature 3D bioprinting for cultured meat: A case of rainbow trout cell cultivation","authors":"Zhaojing Huang , Ruihao Niu , Zongyun Du , Qipu Xin , Jihui Lao , Haohao Hu , Jing Yu , Lu Qian , Qihe Chen , Xiao Huang , Donghong Liu , Enbo Xu","doi":"10.1016/j.susmat.2025.e01422","DOIUrl":"10.1016/j.susmat.2025.e01422","url":null,"abstract":"<div><div>Cold-water fish cell-cultured meat production presents a unique challenge due to the significantly low culture temperature required for cell growth, where bioinks for cold bioprinting are designed with suitable rheological properties to support cell viability. Here, we develop a novel composite hydrogel bioink composed of warm-water fish gelatin (FG) and cold-water fish gelatin (CFG) optimized for low-temperature (<18 °C) 3D bioprinting (LT-bio3DP) of rainbow trout muscle satellite cells (rtMSCs). The bioinks are systematically evaluated for their structural, rheological, and biological properties. The results demonstrate that gelation temperature decreases from 20.11 °C to 2.33 °C as increasing CFG. The followed reduction of storage modulus and viscosity (while increase of hydrophilicity) influence the printability and cell behavior. The 4FG6CFG hydrogel is identified as the optimal composition of LT-bio3DP, with balanced structural stability, extrusion performance, and cell compatibility. It promotes rtMSCs proliferation and myogenic differentiation successfully. Printed scaffolds maintain their morphology during long-term culture, and exhibited textural hardness comparable to native rainbow trout meat tissue. Overall, we provide an innovative strategy for developing cold-temperature bioprinting and biomaterials tailored to cell cultivation.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"44 ","pages":"Article e01422"},"PeriodicalIF":8.6,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143912717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jingyuan Wei , Yanhui Song , Manyuan Gan , Guodong An , Yongqing Shen , Xiaohui Zhao , Yi Zhang , Peizhi Liu , Bingshe Xu , Junjie Guo
{"title":"A heterostructure coupling of Ru nanosheets and NiCo LDH for hydrazine-assisted overall seawater splitting","authors":"Jingyuan Wei , Yanhui Song , Manyuan Gan , Guodong An , Yongqing Shen , Xiaohui Zhao , Yi Zhang , Peizhi Liu , Bingshe Xu , Junjie Guo","doi":"10.1016/j.susmat.2025.e01413","DOIUrl":"10.1016/j.susmat.2025.e01413","url":null,"abstract":"<div><div>Modifying the catalyst's electronic structure is essential for improving the hydrazine oxidation reaction (HzOR) and alkaline hydrogen evolution reaction (HER), but it is still very difficult. We have developed a new heterostructured electrocatalyst in this work using Ru nanosheets and NiCo layered double hydroxides (LDH). In-situ Raman and theoretical studies show that the heterostructure of Ru/NiCo LDH lowers absorption of hydrogen's Gibbs free energy and the d-band center of Ru/NiCo LDH (from −1.7250 to −1.3341 eV), causing the directed development of interfacial H<sub>2</sub>O (ΔG<sub>H*</sub>, from 1.65 to 0.23 eV). With an overpotential of 19 and 75 mV to achieve 10 and 100 mA cm<sup>−2</sup> for HER, these beneficial characteristics provide the Ru/NiCo LDH with exceptional electrocatalytic capabilities. For HzOR, 10 and 100 mA cm<sup>−2</sup> may be produced using just −118 and−112 mV, respectively. The Ru/NiCo LDH electrolyzer also only needs 22 and 223 mV to produce 10 and 100 mA cm<sup>−2</sup>, respectively. This work lays the groundwork for developing bifunctional catalysts for the green hydrogen industry.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"44 ","pages":"Article e01413"},"PeriodicalIF":8.6,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143902020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Eva Carolina Arrua , Giselle Bedogni , Jhonny Villarroel-Rocha , Kiara Montiel-Centeno , Karim Sapag , Victoria Flexer
{"title":"Systematic study on synthesis and characterization of lithium manganese oxides for direct lithium extraction from natural brines","authors":"Eva Carolina Arrua , Giselle Bedogni , Jhonny Villarroel-Rocha , Kiara Montiel-Centeno , Karim Sapag , Victoria Flexer","doi":"10.1016/j.susmat.2025.e01420","DOIUrl":"10.1016/j.susmat.2025.e01420","url":null,"abstract":"<div><div>Lithium recovery from natural sources such as continental brines is an alternative to reaching high lithium demands. However, the current evaporitic technology is recognized for its techno-economic disadvantages and negative environmental impacts. Lithium manganese oxides were synthesized, characterized, and evaluated in this work regarding their capacity for selective lithium recovery from natural brine through adsorption. Two synthetic methodologies were assessed, a solid-state synthesis and a hydrothermal method, and the conditions of formulations were modified to prepare 13 different lithium manganese oxides with very high lithium recovery capacity. The formulated sub-micrometer sized particles showed diameters ranging from 149 nm to particles of about 1500 nm. Several lithium manganese oxide ion sieves were obtained from different Li:Mn ratios of precursors: LiMn<sub>2</sub>O<sub>4</sub>, Li<sub>1.33</sub>Mn<sub>1.67</sub>O<sub>4</sub>, and Li<sub>1.6</sub>Mn<sub>1.6</sub>O<sub>4</sub>. Lithium adsorption capacity showed significant differences depending on the chemical structure, but especially on the particle size of the adsorbent, with some influence of the mesoporosity. The maximum lithium recovery capacity was 35.4 mg<sub>Li</sub>/g<sub>HMO</sub> when Li<sub>1.6</sub>Mn<sub>1.6</sub>O<sub>4</sub> of 317 nm or 166 nm was used. The cyclability showed a high dependence on particle size. The general trend is that the adsorption capacity is more significant when particle size is smaller. All lithium-ion sieves showed high lithium selectivity in complex media, such as natural brine. Mn was not detected in neither the lithium deprived brine, nor in the HCl recovery solution, which was attributed to the room temperature and the neutral pH of the adsorption tests, as compared with previous studies.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"44 ","pages":"Article e01420"},"PeriodicalIF":8.6,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143902165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}