Helena Passos

2.8k total citations
63 papers, 2.3k citations indexed

About

Helena Passos is a scholar working on Catalysis, Filtration and Separation and Electrochemistry. According to data from OpenAlex, Helena Passos has authored 63 papers receiving a total of 2.3k indexed citations (citations by other indexed papers that have themselves been cited), including 40 papers in Catalysis, 33 papers in Filtration and Separation and 19 papers in Electrochemistry. Recurrent topics in Helena Passos's work include Ionic liquids properties and applications (40 papers), Chemical and Physical Properties in Aqueous Solutions (33 papers) and Electrochemical Analysis and Applications (19 papers). Helena Passos is often cited by papers focused on Ionic liquids properties and applications (40 papers), Chemical and Physical Properties in Aqueous Solutions (33 papers) and Electrochemical Analysis and Applications (19 papers). Helena Passos collaborates with scholars based in Portugal, France and Brazil. Helena Passos's co-authors include João A. P. Coutinho, Mara G. Freire, Nicolas Schaeffer, Ana M. Ferreira, Nicolas Papaïconomou, Fabiane Oliveira Farias, Marcos R. Mafra, Álvaro Silva Lima, Ana M. Fernandes and Isabelle Billard and has published in prestigious journals such as Angewandte Chemie International Edition, Journal of Hazardous Materials and Scientific Reports.

In The Last Decade

Helena Passos

62 papers receiving 2.3k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Helena Passos Portugal 27 1.4k 1.0k 576 444 379 63 2.3k
Nicolas Papaïconomou France 28 1.5k 1.1× 502 0.5× 931 1.6× 568 1.3× 379 1.0× 70 2.3k
Kaveh Shahbaz New Zealand 27 1.7k 1.2× 590 0.6× 636 1.1× 293 0.7× 814 2.1× 50 2.5k
Yuanchao Pei China 30 2.1k 1.5× 1.4k 1.4× 723 1.3× 702 1.6× 401 1.1× 69 3.3k
Francisca A. e Silva Portugal 21 1.3k 0.9× 726 0.7× 344 0.6× 397 0.9× 279 0.7× 40 2.1k
Dannie J. G. P. van Osch Netherlands 13 1.6k 1.2× 482 0.5× 582 1.0× 294 0.7× 702 1.9× 15 2.3k
Nicolas Schaeffer Portugal 22 1.0k 0.7× 430 0.4× 703 1.2× 220 0.5× 332 0.9× 61 1.8k
Francisco J. Deive Spain 29 961 0.7× 896 0.9× 257 0.4× 229 0.5× 394 1.0× 115 2.4k
Benworth Hansen United States 4 1.4k 1.0× 345 0.3× 412 0.7× 289 0.7× 608 1.6× 9 2.4k
Derrick Poe United States 5 1.4k 1.0× 353 0.3× 420 0.7× 291 0.7× 626 1.7× 9 2.5k
Stephanie Spittle United States 4 1.4k 1.0× 344 0.3× 411 0.7× 291 0.7× 610 1.6× 5 2.4k

Countries citing papers authored by Helena Passos

Since Specialization
Citations

This map shows the geographic impact of Helena Passos's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Helena Passos with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Helena Passos more than expected).

Fields of papers citing papers by Helena Passos

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Helena Passos. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Helena Passos. The network helps show where Helena Passos may publish in the future.

Co-authorship network of co-authors of Helena Passos

This figure shows the co-authorship network connecting the top 25 collaborators of Helena Passos. A scholar is included among the top collaborators of Helena Passos based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Helena Passos. Helena Passos is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Polesca, Cariny, Helena Passos, Ana C. A. Sousa, et al.. (2024). Sustainable pretreatment of blood samples using hydrophobic eutectic solvents to improve the detection of bisphenol A. Green Chemistry. 27(1). 200–208. 2 indexed citations
2.
Passos, Helena, et al.. (2023). Metal biosorption onto non-living algae: a critical review on metal recovery from wastewater. Green Chemistry. 25(15). 5775–5788. 10 indexed citations
3.
Vargas, Silvia J. R., et al.. (2023). Simple gold recovery from e-waste leachate by selective precipitation using a quaternary ammonium salt. Separation and Purification Technology. 316. 123797–123797. 22 indexed citations
4.
Passos, Helena, et al.. (2023). Super concentrated HCl in a deep eutectic solvent as media for the integrated leaching and separation of metals from end-of-life lithium-ion batteries. Chemical Engineering Journal. 475. 146374–146374. 31 indexed citations
5.
Polesca, Cariny, Helena Passos, Bruno Miguel Neves, João A. P. Coutinho, & Mara G. Freire. (2023). Valorization of chicken feathers using aqueous solutions of ionic liquids. Green Chemistry. 25(4). 1424–1434. 15 indexed citations
6.
Schaeffer, Nicolas, et al.. (2023). Sorption as a pre-concentration step for metal ions recovery in multi-elemental systems. Process Safety and Environmental Protection. 192. 546–555. 3 indexed citations
7.
Maçario, Inês P. E., et al.. (2022). The role of biomass elemental composition and ion-exchange in metal sorption by algae. Chemosphere. 314. 137675–137675. 21 indexed citations
8.
Schaeffer, Nicolas, Joana Luísa Pereira, Sónia P. M. Ventura, et al.. (2021). Synthesis of Purine-Based Ionic Liquids and Their Applications. Molecules. 26(22). 6958–6958. 6 indexed citations
9.
Passos, Helena, et al.. (2021). Selective Sequential Recovery of Zinc and Copper from Acid Mine Drainage. ACS Sustainable Chemistry & Engineering. 9(10). 3647–3657. 22 indexed citations
10.
Schaeffer, Nicolas, Helena Passos, Matthieu Gras, et al.. (2020). Selective Separation of Manganese, Cobalt, and Nickel in a Fully Aqueous System. ACS Sustainable Chemistry & Engineering. 8(32). 12260–12269. 29 indexed citations
11.
Passos, Helena, Emanuel V. Capela, Maria V. Quental, et al.. (2018). Mechanisms ruling the partition of solutes in ionic-liquid-based aqueous biphasic systems – the multiple effects of ionic liquids. Physical Chemistry Chemical Physics. 20(13). 8411–8422. 13 indexed citations
12.
Passos, Helena, et al.. (2018). Hydrogen bond basicity of ionic liquids and molar entropy of hydration of salts as major descriptors in the formation of aqueous biphasic systems. Physical Chemistry Chemical Physics. 20(20). 14234–14241. 20 indexed citations
13.
Schaeffer, Nicolas, et al.. (2018). Sustainable Extraction and Separation of Rhenium and Molybdenum from Model Copper Mining Effluents Using a Polymeric Aqueous Two-Phase System. ACS Sustainable Chemistry & Engineering. 7(1). 1778–1785. 15 indexed citations
14.
Ferreira, Ana M., Helena Passos, Ana P. M. Tavares, et al.. (2018). An integrated process for enzymatic catalysis allowing product recovery and enzyme reuse by applying thermoreversible aqueous biphasic systems. Green Chemistry. 20(6). 1218–1223. 48 indexed citations
15.
Madeira, Pedro P., Helena Passos, Joana M. Gomes, João A. P. Coutinho, & Mara G. Freire. (2017). Alternative probe for the determination of the hydrogen-bond acidity of ionic liquids and their aqueous solutions. Physical Chemistry Chemical Physics. 19(18). 11011–11016. 29 indexed citations
16.
Passos, Helena, et al.. (2017). A Triple Salting‐Out Effect is Required for the Formation of Ionic‐Liquid‐Based Aqueous Multiphase Systems. Angewandte Chemie International Edition. 56(47). 15058–15062. 18 indexed citations
17.
Farias, Fabiane Oliveira, Helena Passos, Álvaro Silva Lima, Marcos R. Mafra, & João A. P. Coutinho. (2017). Is It Possible To Create Ternary-like Aqueous Biphasic Systems with Deep Eutectic Solvents?. ACS Sustainable Chemistry & Engineering. 5(10). 9402–9411. 65 indexed citations
18.
Batista, Marta L. S., Helena Passos, Edward J. Maginn, et al.. (2016). Why are some cyano-based ionic liquids better glucose solvents than water?. Physical Chemistry Chemical Physics. 18(28). 18958–18970. 13 indexed citations
19.
Luís, Andreia, et al.. (2015). Good’s buffers as novel phase-forming components of ionic-liquid-based aqueous biphasic systems. Biochemical Engineering Journal. 101. 142–149. 21 indexed citations
20.
Almeida, Mafalda R., Helena Passos, Matheus M. Pereira, et al.. (2014). Ionic liquids as additives to enhance the extraction of antioxidants in aqueous two-phase systems. Separation and Purification Technology. 128. 1–10. 106 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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