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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 44 16687 15064 77 74 110 9249

Theophilos Ioannides publications per year

The chart shows the history of publications by Theophilos Ioannides between 1989 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Theophilos Ioannides published across 37 years, from 1989 to 2025, averaging 3.3 papers a year. Output peaked at 10 publications in 2009. 5 of the 122 publications appeared in the last two years.

No. of publications
2 4 6 8 10
Bar chart. Horizontal axis: year, 1989 to 2025. Vertical axis: number of publications, 0 to 10. Peak 10 publications in 2009. 1989: 2 publications 1990: 0 publications 1991: 0 publications 1992: 0 publications 1993: 4 publications 1994: 3 publications 1995: 3 publications 1996: 2 publications 1997: 2 publications 1998: 6 publications 1999: 1 publication 2000: 2 publications 2001: 2 publications 2002: 1 publication 2003: 2 publications 2004: 2 publications 2005: 4 publications 2006: 7 publications 2007: 8 publications 2008: 7 publications 2009: 10 publications 2010: 0 publications 2011: 3 publications 2012: 4 publications 2013: 1 publication 2014: 1 publication 2015: 3 publications 2016: 4 publications 2017: 6 publications 2018: 1 publication 2019: 1 publication 2020: 7 publications 2021: 5 publications 2022: 10 publications 2023: 3 publications 2024: 3 publications 2025: 2 publications
1989 2025

122 publications in total across all disciplines

View publications per year as a table
Theophilos Ioannides: publications per year, 1989 to 2025
Year Publications
1989 2
1990 0
1991 0
1992 0
1993 4
1994 3
1995 3
1996 2
1997 2
1998 6
1999 1
2000 2
2001 2
2002 1
2003 2
2004 2
2005 4
2006 7
2007 8
2008 7
2009 10
2010 0
2011 3
2012 4
2013 1
2014 1
2015 3
2016 4
2017 6
2018 1
2019 1
2020 7
2021 5
2022 10
2023 3
2024 3
2025 2
Total 122
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Theophilos Ioannides publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Theophilos Ioannides sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 101–120 publications, is where this scientist sits. 61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61–80 publications 1,295+

This scientist: 110 publications — 4th percentile

4% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623 110
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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Theophilos Ioannides D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Theophilos Ioannides sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 44–45 D-Index, is where this scientist sits. 40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40–41 D-Index 159+

This scientist: 44 D-Index — 7th percentile

7% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808 44
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051
58–59 930
60–61 882
62–63 834
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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Overview

Theophilos Ioannides is affiliated with the Foundation for Research and Technology Hellas in Greece. Their research primarily spans the fields of Materials Science and Engineering, with significant contributions in various subfields such as Materials Chemistry, Mechanical Engineering, Electronic, Optical and Magnetic Materials, Catalysis, and Electrical and Electronic Engineering.

Their research topics are diverse and cover critical areas related to material innovation and applications, including:

  • Supercapacitor Materials and Fabrication
  • Membrane Separation and Gas Transport
  • Graphene Research and Applications
  • Advancements in Battery Materials
  • Ionic Liquids Properties and Applications
  • Catalytic Processes in Materials Science
  • Catalysis and Oxidation Reactions

Ioannides has contributed to multiple research articles published in well-known scientific journals. Recent notable publications include:

  • "Application of Sorbents for Oil Spill Cleanup Focusing on Natural-Based Modified Materials: A Review" (2020) in Molecules
  • "Biomass-derived graphene-like materials as active electrodes for supercapacitor applications: A critical review" (2022) in Chemical Engineering Journal
  • "High-quality laser-assisted biomass-based turbostratic graphene for high-performance supercapacitors" (2020) in Carbon
  • "Transfer of metals in the liquids of electronic cigarettes" (2020) in Inhalation Toxicology
  • "Pyridinium based Poly(Ionic Liquids) membranes with exceptional high water vapor permeability and selectivity" (2020) in Separation and Purification Technology

Theophilos Ioannides frequently collaborates with several co-authors respected in their research community. These collaborators include Michail Athanasiou, Nikolaos Samartzis, Spyros N. Yannopoulos, Dionysios Vroulias, and Valadoula Deimede, with multiple joint publications reflecting ongoing research partnerships.

The researcher publishes regularly in specialized venues such as Journal of Membrane Science, Catalysts, Chemical Engineering Journal, Carbon, and Separation and Purification Technology, indicating a focused engagement with journals that cater to materials science and chemical engineering disciplines.

Best Publications

  • Selective CO oxidation over CuO-CeO2 catalysts prepared via the urea-nitrate combustion method

    George Avgouropoulos;George Avgouropoulos;Theophilos Ioannides

  • A comparative study of Pt/γ-Al2O3, Au/α-Fe2O3 and CuO–CeO2 catalysts for the selective oxidation of carbon monoxide in excess hydrogen

    G Avgouropoulos;G Avgouropoulos;T Ioannides;Ch Papadopoulou;J Batista

  • VOC oxidation over CuO–CeO2 catalysts prepared by a combustion method

    Dimitrios Delimaris;Dimitrios Delimaris;Theophilos Ioannides

  • Influence of the preparation method on the performance of CuO–CeO2 catalysts for the selective oxidation of CO

    G. Avgouropoulos;T. Ioannides;H. Matralis;H. Matralis

  • Manganese–lanthanum oxides modified with silver for the catalytic combustion of methane

    Andrzej Machocki;Theophilos Ioannides;Beata Stasinska;Wojciech Gac

  • Evaluation of γ-MnO2as a VOC Removal Catalyst: Comparison with a Noble Metal Catalyst☆

    C. Lahousse;A. Bernier;P. Grange;B. Delmon

  • CuO–CeO2 mixed oxide catalysts for the selective oxidation of carbon monoxide in excess hydrogen

    George Avgouropoulos;Theophilos Ioannides;Haralambos K. Matralis;Jurka Batista

  • Combustion of non-halogenated volatile organic compounds over group VIII metal catalysts

    Panagiotis Papaefthimiou;Theophilos Ioannides;Xenophon E. Verykios

  • Effect of synthesis parameters on catalytic properties of CuO-CeO2

    George Avgouropoulos;Theophilos Ioannides

  • Combined steam reforming of methanol over Cu–Mn spinel oxide catalysts

    Joan Papavasiliou;Joan Papavasiliou;George Avgouropoulos;Theophilos Ioannides

  • Charge Transfer in Metal Catalysts Supported on Doped TiO2: A Theoretical Approach Based on Metal–Semiconductor Contact Theory

    Theophilos Ioannides;Xenophon E. Verykios

  • Performance of doped Pt/TiO2 (W6+) catalysts for combustion of volatile organic compounds (VOCs)

    Panagiotis Papaefthimiou;Theophilos Ioannides;Xenophon E. Verykios

  • Water–gas shift activity of doped Pt/CeO2 catalysts

    P. Panagiotopoulou;J. Papavasiliou;J. Papavasiliou;G. Avgouropoulos;T. Ioannides

  • Thermodynamic analysis of ethanol processors for fuel cell applications

    Theophilos Ioannides

  • Catalytic performance and characterization of Au/doped-ceria catalysts for the preferential CO oxidation reaction

    G. Avgouropoulos;M. Manzoli;F. Boccuzzi;T. Tabakova

  • Biomass-derived graphene-like materials as active electrodes for supercapacitor applications: A critical review

    Unknown

  • Complete oxidation of ethanol over alkali-promoted Pt/Al2O3 catalysts

    George Avgouropoulos;Evaggelos Oikonomopoulos;Dimitrios Kanistras;Theophilos Ioannides

  • Effect of dopants on the performance of CuO–CeO2 catalysts in methanol steam reforming

    Joan Papavasiliou;Joan Papavasiliou;George Avgouropoulos;Theophilos Ioannides

  • Steam reforming of methanol over copper-manganese spinel oxide catalysts

    Joan Papavasiliou;Joan Papavasiliou;George Avgouropoulos;Theophilos Ioannides

  • Production of hydrogen via combined steam reforming of methanol over CuO–CeO2 catalysts

    Joan Papavasiliou;Joan Papavasiliou;George Avgouropoulos;Theophilos Ioannides

  • A comparative study of ceria-supported gold and copper oxide catalysts for preferential CO oxidation reaction

    George Avgouropoulos;Joan Papavasiliou;Tatyana Tabakova;Vasko Idakiev

Frequent Co-Authors

Xenophon E. Verykios
Xenophon E. Verykios University of Patras
Stylianos G. Neophytides
Stylianos G. Neophytides Foundation for Research and Technology Hellas
Maela Manzoli
Maela Manzoli University of Turin
Flora Boccuzzi
Flora Boccuzzi University of Turin
José Antonio Odriozola
José Antonio Odriozola University of Seville
Miguel Ángel Centeno
Miguel Ángel Centeno Spanish National Research Council
Michael Tsapatsis
Michael Tsapatsis Johns Hopkins University
Dimitris I. Kondarides
Dimitris I. Kondarides University of Patras
Irina Smirnova
Irina Smirnova Hamburg University of Technology
Tomas Ramirez Reina
Tomas Ramirez Reina University of Surrey

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