U.G. Akpan

4.0k total citations · 1 hit paper
39 papers, 3.3k citations indexed

About

U.G. Akpan is a scholar working on Renewable Energy, Sustainability and the Environment, Biomedical Engineering and Mechanical Engineering. According to data from OpenAlex, U.G. Akpan has authored 39 papers receiving a total of 3.3k indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Renewable Energy, Sustainability and the Environment, 12 papers in Biomedical Engineering and 11 papers in Mechanical Engineering. Recurrent topics in U.G. Akpan's work include Advanced Photocatalysis Techniques (13 papers), TiO2 Photocatalysis and Solar Cells (13 papers) and Biodiesel Production and Applications (7 papers). U.G. Akpan is often cited by papers focused on Advanced Photocatalysis Techniques (13 papers), TiO2 Photocatalysis and Solar Cells (13 papers) and Biodiesel Production and Applications (7 papers). U.G. Akpan collaborates with scholars based in Nigeria, Malaysia and Qatar. U.G. Akpan's co-authors include B.H. Hameed, M.A. Olutoye, I.J. Ani, Akeem Adebayo Jimoh, Adeyinka Sikiru Yusuff, Olalekan David Adeniyi, Mohammad Asif, N.K. Daud, Kabir Garba and Kyung‐Ryang Wee and has published in prestigious journals such as SHILAP Revista de lepidopterología, Journal of Hazardous Materials and Journal of Cleaner Production.

In The Last Decade

U.G. Akpan

37 papers receiving 3.1k citations

Hit Papers

align trajectories

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.

Parameters affecting the photocatalytic degradation of dyes using TiO2-based photocatalysts: A review

2009 1.7k citations U.G. Akpan, B.H. Hameed Journal of Hazardous Materials profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
U.G. Akpan Nigeria	17	2.2k	1.5k	482	447	435	39	3.3k
Ridha Djellabi‬‬‬‬‬‬‬‬ China	36	2.2k 1.0×	1.7k 1.1×	842 1.7×	548 1.2×	729 1.7×	116	3.8k
Lan Ching Sim Malaysia	27	1.9k 0.8×	1.7k 1.1×	456 0.9×	316 0.7×	598 1.4×	56	2.8k
Dhiraj Sud India	24	1.4k 0.6×	1.1k 0.7×	1.0k 2.1×	423 0.9×	381 0.9×	64	3.2k
Hasliza Bahruji Brunei	30	1.3k 0.6×	1.7k 1.1×	509 1.1×	523 1.2×	300 0.7×	119	3.2k
Jiliang Ma China	32	1.2k 0.5×	1.4k 0.9×	275 0.6×	712 1.6×	389 0.9×	103	2.6k
Maria J. Sampaio Portugal	30	1.9k 0.8×	1.5k 1.0×	364 0.8×	297 0.7×	722 1.7×	68	2.8k
Na Song China	28	1.3k 0.6×	1.2k 0.8×	531 1.1×	622 1.4×	725 1.7×	82	3.1k
Chong Fai Kait Malaysia	31	1.5k 0.7×	1.5k 1.0×	221 0.5×	696 1.6×	375 0.9×	131	3.3k
Mohsin Nawaz South Korea	23	1.2k 0.5×	1.6k 1.1×	522 1.1×	831 1.9×	642 1.5×	42	2.9k
Norzahir Sapawe Malaysia	34	1.2k 0.5×	1.3k 0.8×	742 1.5×	432 1.0×	296 0.7×	113	2.9k

Countries citing papers authored by U.G. Akpan

Since Specialization

Citations

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

Fields of papers citing papers by U.G. Akpan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by U.G. Akpan. 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 U.G. Akpan. The network helps show where U.G. Akpan may publish in the future.

Co-authorship network of co-authors of U.G. Akpan

This figure shows the co-authorship network connecting the top 25 collaborators of U.G. Akpan. A scholar is included among the top collaborators of U.G. Akpan 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 U.G. Akpan. U.G. Akpan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Ani, I.J., U.G. Akpan, M.A. Olutoye, B.H. Hameed, & Titus Chinedu Egbosiuba. (2024). Adsorption–photocatalysis synergy of reusable mesoporous TiO2–ZnO for photocatalytic degradation of doxycycline antibiotic. Heliyon. 10(9). e30531–e30531. 22 indexed citations

Akpan, U.G., et al.. (2024). Comparative study on the extraction strength of solvents on tar sand from Okitipupa, Ondo State. Nigerian Journal of Technology. 43(1). 51–55. 1 indexed citations

Ani, I.J., et al.. (2023). Treatment of spent engine oil (spent SAE W50) via solvent extraction- adsorption process for the production of transfer oil: Physico-chemical properties of the adsorbents. Scientific African. 20. e01617–e01617. 5 indexed citations

Akpan, U.G., et al.. (2021). SYNTHESIS AND CHARACTERIZATION OF NEEM-BASED ZINC OXIDE PHOTOCATALYST. 36(1). 9–15.

Olutoye, M.A., et al.. (2020). Synthesis of fatty acid methyl esters from used vegetable oil using activated anthill as catalyst. Nigerian Journal of Technology. 39(1). 140–147. 2 indexed citations

Ijah, U.J.J., et al.. (2019). Optimisation of Biogas Production through Variation of PH, Detention Time and Ratio of Substrate to Water for Rural Utilization. 2(1). 52–59. 3 indexed citations

Ani, I.J., et al.. (2018). Kolanut pod husk as a biobase catalyst for fatty acid methyl ester production using Thevetia peruviana (Yellow oleander) seed oil. IOP Conference Series Earth and Environmental Science. 173. 12008–12008. 10 indexed citations

Yusuff, Adeyinka Sikiru, Olalekan David Adeniyi, M.A. Olutoye, & U.G. Akpan. (2018). Development and Characterization of a Composite Anthill-chicken Eggshell Catalyst for Biodiesel Production from Waste Frying Oil. SHILAP Revista de lepidopterología. 9(1). 110–110. 29 indexed citations

Akpan, U.G., et al.. (2017). Upgrading of glycerol from biodiesel synthesis with dimethyl carbonate on reusable Sr–Al mixed oxide catalysts. Energy Conversion and Management. 138. 183–189. 69 indexed citations

10.

Ani, I.J., et al.. (2015). Effects of Process Variables and a Comparative Study of Methods for Transfer Oil Production from Spent Engine Oil. British Journal of Applied Science & Technology. 9(1). 65–76. 6 indexed citations

11.

Akpan, U.G., et al.. (2014). One-pot synthesis of glycidol from glycerol and dimethyl carbonate over KF/sepiolite catalyst. Applied Catalysis A General. 487. 181–188. 41 indexed citations

12.

Akpan, U.G., et al.. (2013). Photocatalytic activity of sol–gel-derived mesoporous TiO2 thin films for reactive orange 16 degradation. Desalination and Water Treatment. 53(13). 3604–3614. 10 indexed citations

13.

Akpan, U.G. & B.H. Hameed. (2013). Development and photocatalytic activities of TiO2 doped with Ca–Ce–W in the degradation of acid red 1 under visible light irradiation. Desalination and Water Treatment. 52(28-30). 5639–5651. 11 indexed citations

14.

Daud, N.K., U.G. Akpan, & B.H. Hameed. (2012). Decolorization of Sunzol Black DN conc. in aqueous solution by Fenton oxidation process: effect of system parameters and kinetic study. Desalination and Water Treatment. 37(1-3). 1–7. 60 indexed citations

15.

Akpan, U.G. & B.H. Hameed. (2011). Enhancement of the photocatalytic activity of TiO2 by doping it with calcium ions. Journal of Colloid and Interface Science. 357(1). 168–178. 56 indexed citations

16.

Hameed, B.H., U.G. Akpan, & Kyung‐Ryang Wee. (2011). Photocatalytic degradation of Acid Red 1 dye using ZnO catalyst in the presence and absence of silver. Desalination and Water Treatment. 27(1-3). 204–209. 34 indexed citations

17.

Akpan, U.G. & B.H. Hameed. (2009). Parameters affecting the photocatalytic degradation of dyes using TiO2-based photocatalysts: A review. Journal of Hazardous Materials. 170(2-3). 520–529. 1661 indexed citations breakdown →

18.

Akpan, U.G., et al.. (2008). Production of Ethanol Fuel from Organic and Food Wastes. 1–11. 18 indexed citations

19.

Akpan, U.G. & A. S. Kovo. (2005). Production and Preservation of Passion Fruit Juice. SHILAP Revista de lepidopterología. 1 indexed citations

20.

Akpan, U.G. & A. S. Kovo. (2005). Preservation of Passion Fruit Juice. 4 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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