J.J.M. Órfão

17.3k total citations · 5 hit papers
175 papers, 15.3k citations indexed

About

J.J.M. Órfão is a scholar working on Materials Chemistry, Catalysis and Biomedical Engineering. According to data from OpenAlex, J.J.M. Órfão has authored 175 papers receiving a total of 15.3k indexed citations (citations by other indexed papers that have themselves been cited), including 109 papers in Materials Chemistry, 61 papers in Catalysis and 51 papers in Biomedical Engineering. Recurrent topics in J.J.M. Órfão's work include Catalytic Processes in Materials Science (89 papers), Advanced oxidation water treatment (38 papers) and Nanomaterials for catalytic reactions (37 papers). J.J.M. Órfão is often cited by papers focused on Catalytic Processes in Materials Science (89 papers), Advanced oxidation water treatment (38 papers) and Nanomaterials for catalytic reactions (37 papers). J.J.M. Órfão collaborates with scholars based in Portugal, Spain and France. J.J.M. Órfão's co-authors include M. Fernando R. Pereira, José L. Figueiredo, M.M.A. Freitas, P.C.C. Faria, O.S.G.P. Soares, Vera P. Santos, Alexandra G. Gonçalves, Filipa Antunes, Sónia A. C. Carabineiro and Lucília S. Ribeiro and has published in prestigious journals such as SHILAP Revista de lepidopterología, Water Research and Journal of Hazardous Materials.

In The Last Decade

J.J.M. Órfão

174 papers receiving 15.0k citations

Hit Papers

Modification of the surface chemistry of activated carbons 1999 2026 2008 2017 1999 2004 1999 2010 2003 500 1000 1.5k 2.0k 2.5k
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Modification of the surface chemistry of activated carbons
    1999 2.7k citations José L. Figueiredo, M. Fernando R. Pereira et al. Carbon profile →
  2. Adsorption of anionic and cationic dyes on activated carbons with different surface chemistries
    2004 688 citations P.C.C. Faria, J.J.M. Órfão et al. profile →
  3. Pyrolysis kinetics of lignocellulosic materials—three independent reactions model
    1999 646 citations J.J.M. Órfão, José L. Figueiredo et al. profile →
  4. The role of lattice oxygen on the activity of manganese oxides towards the oxidation of volatile organic compounds
    2010 592 citations Vera P. Santos, M. Fernando R. Pereira et al. Applied Catalysis B: Environmental profile →
  5. Adsorption of dyes on activated carbons: influence of surface chemical groups
    2003 503 citations M. Fernando R. Pereira, J.J.M. Órfão et al. Carbon profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
J.J.M. Órfão Portugal 63 8.3k 4.2k 3.8k 3.7k 3.4k 175 15.3k
José L. Figueiredo Portugal 79 13.8k 1.7× 4.0k 0.9× 5.1k 1.4× 5.1k 1.4× 5.9k 1.7× 348 23.6k
Zhengping Hao China 71 12.2k 1.5× 2.0k 0.5× 2.2k 0.6× 5.8k 1.6× 4.1k 1.2× 347 18.1k
Carlos Moreno‐Castilla Spain 58 5.1k 0.6× 4.9k 1.2× 2.7k 0.7× 1.1k 0.3× 1.8k 0.5× 180 13.2k
Aishah Abdul Jalil Malaysia 61 9.1k 1.1× 1.7k 0.4× 2.3k 0.6× 5.4k 1.5× 4.2k 1.2× 443 15.0k
Enrique Rodrı́guez-Castellón Spain 70 11.4k 1.4× 1.4k 0.3× 5.1k 1.3× 3.5k 1.0× 3.1k 0.9× 685 20.7k
Jing Xu China 64 10.3k 1.2× 1.5k 0.4× 1.8k 0.5× 4.3k 1.2× 8.5k 2.5× 228 14.9k
Boxiong Shen China 61 5.7k 0.7× 1.6k 0.4× 3.6k 0.9× 2.2k 0.6× 2.1k 0.6× 440 13.5k
James P. Olivier United States 21 8.9k 1.1× 3.0k 0.7× 3.6k 0.9× 1.7k 0.4× 2.9k 0.9× 28 18.9k
Zhihui Ai China 74 8.8k 1.1× 5.2k 1.2× 3.9k 1.0× 1.9k 0.5× 11.4k 3.3× 158 17.9k
Joaquim L. Faria Portugal 74 7.9k 0.9× 3.2k 0.8× 2.3k 0.6× 967 0.3× 9.1k 2.7× 306 15.4k

Countries citing papers authored by J.J.M. Órfão

Since Specialization
Citations

This map shows the geographic impact of J.J.M. Órfão'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 J.J.M. Órfão with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J.J.M. Órfão more than expected).

Fields of papers citing papers by J.J.M. Órfão

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J.J.M. Órfão. 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 J.J.M. Órfão. The network helps show where J.J.M. Órfão may publish in the future.

Co-authorship network of co-authors of J.J.M. Órfão

This figure shows the co-authorship network connecting the top 25 collaborators of J.J.M. Órfão. A scholar is included among the top collaborators of J.J.M. Órfão 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 J.J.M. Órfão. J.J.M. Órfão 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.
Soares, O.S.G.P., et al.. (2024). Magnetic Metallic Nanoparticles Coated with Carbon for the Catalytic Removal of Bromate from Water. Catalysts. 14(2). 149–149. 3 indexed citations
2.
Soares, O.S.G.P., Erika de Oliveira Jardim, Enrique V. Ramos–Fernández, et al.. (2021). Highly N2-Selective Activated Carbon-Supported Pt-In Catalysts for the Reduction of Nitrites in Water. Frontiers in Chemistry. 9. 733881–733881. 11 indexed citations
3.
Rocha, Raquel P., O.S.G.P. Soares, J.J.M. Órfão, M. Fernando R. Pereira, & José L. Figueiredo. (2021). Heteroatom (N, S) Co-Doped CNTs in the Phenol Oxidation by Catalytic Wet Air Oxidation. Catalysts. 11(5). 578–578. 8 indexed citations
4.
Ribeiro, Lucília S., J.J.M. Órfão, & M. Fernando R. Pereira. (2020). An overview of the hydrolytic hydrogenation of lignocellulosic biomass using carbon-supported metal catalysts. Materials Today Sustainability. 11-12. 100058–100058. 20 indexed citations
5.
Ribeiro, Lucília S., Natalia Rey‐Raap, José L. Figueiredo, J.J.M. Órfão, & M. Fernando R. Pereira. (2019). Glucose-based carbon materials as supports for the efficient catalytic transformation of cellulose directly to ethylene glycol. Cellulose. 26(12). 7337–7353. 31 indexed citations
6.
Ribeiro, Lucília S., J.J.M. Órfão, & M. Fernando R. Pereira. (2017). Screening of catalysts and reaction conditions for the direct conversion of corncob xylan to xylitol. Green Processing and Synthesis. 6(3). 265–272. 13 indexed citations
7.
Konsolakis, Michalis, Sónia A. C. Carabineiro, George E. Marnellos, et al.. (2017). Effect of cobalt loading on the solid state properties and ethyl acetate oxidation performance of cobalt-cerium mixed oxides. Journal of Colloid and Interface Science. 496. 141–149. 67 indexed citations
8.
Freitas, Cátia, O.S.G.P. Soares, J.J.M. Órfão, et al.. (2015). Highly efficient reduction of bromate to bromide over mono and bimetallic ZSM5 catalysts. Green Chemistry. 17(8). 4247–4254. 47 indexed citations
9.
Pereira, M. Fernando R., Alexandra G. Gonçalves, & J.J.M. Órfão. (2014). Carbon materials as catalysts for the ozonation of organic pollutants in water. DIGITAL.CSIC (Spanish National Research Council (CSIC)). 18–24. 11 indexed citations
10.
Neves, Isabel C., A. Fonseca, O.S.G.P. Soares, et al.. (2014). Electrochemical oxidation of aniline at mono and bimetallic electrocatalysts supported on carbon nanotubes. Chemical Engineering Journal. 260. 309–315. 36 indexed citations
11.
Carabineiro, Sónia A. C., Xuemeng Chen, Nina Bogdanchikova, et al.. (2014). Gold supported on metal oxides for volatile organic compounds total oxidation. Catalysis Today. 244. 103–114. 122 indexed citations
12.
Soares, O.S.G.P., M. Fernando R. Pereira, J.J.M. Órfão, Joaquim L. Faria, & Cláudia G. Silva. (2014). Photocatalytic nitrate reduction over Pd–Cu/TiO2. Chemical Engineering Journal. 251. 123–130. 109 indexed citations
13.
Orge, Carla A., J.J.M. Órfão, & M. Fernando R. Pereira. (2012). Carbon xerogels and ceria–carbon xerogel materials as catalysts in the ozonation of organic pollutants. Applied Catalysis B: Environmental. 126. 22–28. 32 indexed citations
14.
Rodrigues, Elodie G., M. Fernando R. Pereira, Xiaowei Chen, Juan J. Delgado, & J.J.M. Órfão. (2011). Influence of activated carbon surface chemistry on the activity of Au/AC catalysts in glycerol oxidation. Journal of Catalysis. 281(1). 119–127. 97 indexed citations
15.
Santos, Vera P., M. Fernando R. Pereira, J.J.M. Órfão, & José L. Figueiredo. (2010). The role of lattice oxygen on the activity of manganese oxides towards the oxidation of volatile organic compounds. Applied Catalysis B: Environmental. 99(1-2). 353–363. 592 indexed citations breakdown →
16.
Mussatto, Solange I., Marcela Fernandes, George J. M. Rocha, et al.. (2009). Production, characterization and application of activated carbon from brewer’s spent grain lignin. Bioresource Technology. 101(7). 2450–2457. 108 indexed citations
17.
Faria, P.C.C., J.J.M. Órfão, & M. Fernando R. Pereira. (2008). Catalytic ozonation of sulfonated aromatic compounds in the presence of activated carbon. Applied Catalysis B: Environmental. 83(1-2). 150–159. 89 indexed citations
18.
Santos, Vera P., M. Fernando R. Pereira, J.J.M. Órfão, & José L. Figueiredo. (2008). Catalytic oxidation of ethyl acetate over a cesium modified cryptomelane catalyst. Applied Catalysis B: Environmental. 88(3-4). 550–556. 66 indexed citations
19.
Faria, P.C.C., J.J.M. Órfão, & M. Fernando R. Pereira. (2008). A novel ceria–activated carbon composite for the catalytic ozonation of carboxylic acids. Catalysis Communications. 9(11-12). 2121–2126. 105 indexed citations
20.
Pereira, M. Fernando R., et al.. (2003). Adsorption of dyes on activated carbons: influence of surface chemical groups. Carbon. 41(4). 811–821. 503 indexed citations breakdown →

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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by José L. Figueiredo Breakdown of academic impact, for papers by Zhengping Hao Breakdown of academic impact, for papers by Carlos Moreno‐Castilla Breakdown of academic impact, for papers by Aishah Abdul Jalil Breakdown of academic impact, for papers by Enrique Rodrı́guez-Castellón Breakdown of academic impact, for papers by Jing Xu Breakdown of academic impact, for papers by Boxiong Shen Breakdown of academic impact, for papers by James P. Olivier Breakdown of academic impact, for papers by Zhihui Ai Breakdown of academic impact, for papers by Joaquim L. Faria
Rankless by CCL
2026