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Dr Jose Hernandez Santos Associate Professor, Faculty of Science

About Me Publications

Dr Jose Hernandez Santos

Associate Professor, Faculty of Science jose.santos@ubd.edu.bn


ABOUT ME

Dr Jose H Santos obtained his PhD in Chemistry from La Trobe University, Australia in 1996 under the supervision of Professor Alan Bond. After serving as an Assistant Professor in the University of the Philippines, he worked as a postdoctoral scientist at Dublin City University and AIST Japan where he nurtured and developed his research interest in electroanalytical chemistry. He joined UBD in 2004 as a Senior Lecturer and is currently an Associate Professor, actively involved in the development of analytical methods that are low cost and environmentally friendly. He is also a Chartered Scientist and a Chartered Chemist member of the Royal Society of Chemistry in the UK. His current research involves fabrication of electrochemical sensors for detection and analysis of various substances in foods and beverages as well as in the environment. These sensors are not only environment friendly but are also low cost and easy to use.

EDUCATION

1996: PhD in Chemistry, La Trobe University, Melbourne, Australia
1987: BSc in Chemistry, University of the Philippines at Los Banos, Laguna, Philippines

RESEARCH INTERESTS

Analytical Chemistry
Trace Metal Analysis
Electrochemistry
Ion-Selective Electrodes
Environmental Analysis and Monitoring
Optical Waveguide Spectroscopy
Microelectrodes
Voltammetry
Flow Injection Analysis
Chromatography
Atomic Absorption Spectrophotometry

31

Scopus Publications

529

Google Scholar Citations

15

Google Scholar h-index

20

Google Scholar i10-index


FUTURE PROJECTS

Construction and Evaluation of Homemade Smartphone Spectrophotometer in Studying Beer’s Law

Mobile phones have become part of our day-to-day activities and they are constantly changing the way we communicate and learn. The portability and ubiquity of smartphones has provided new possibilities for the chemistry laboratory to support blended learning and provide opportunities for entrepreneurial skills and environmental awareness. In this project, the students will design, build and test homemade spectrophotometer using a mobile phone and simple components with creative designs. The performance of the constructed prototype will be compared with commercial spectrophotometers currently being used in the laboratory in studying Beer's Law and absorbance spectrometry. This project will be part of a bigger collaborative project with a Computer Science final year student who will be in charge of developing the mobile Apps specific for the designed prototype.

Application invited for: BSc and MSc

Construction and Evaluation of Solid-State Ion Selective Electrodes (ISE) Prepared from Pencil Leads Coated with Conducting Polymers and Sol-Gel Membranes

The aim of the project is to fabricate ISE’s from graphite pencil leads through electrode modification with conducting polymers as well as sol-gel procedures. The fabricated electrodes will be evaluated based on their potentiometric response with pH and various cations and anions.

Application invited for: BSc and MSc

Spectroscopic and Electrochemical Properties of Selected Native Plant Species from Brunei

Many plant species indigenous to Brunei are unexplored in terms of their usefulness as functional food and medicine or as a source of compounds with special properties such as pigments for solar cell applications. This study provides a preliminary investigation on the availability of chemical components in plants that have special properties that may be utilised for various applications. The students should be able to integrate the theory and practice of spectroscopy and electrochemistry in solving real world problems.

Application invited for: BSc and MSc


RECENT PUBLICATIONS

(1) Food Biosensors Based on Molecularly Imprinted Polymers. Kisan Koirala, Jose H. Santos, Fortunato B. Sevilla III (2016), Book chapter in Food Biosensors; Royal Society of Chemistry (RSC); ISBN 978–1–78262–361–8.
(2) Chemically modified carbon paste electrode for the detection of lead, cadmium and zinc ions (2016), K Koirala, JH Santos, AL Tan, MA Ali, AH Mirza, Sensor Review, 36 (4): 339-346.
(3) Adsorption of methylene blue from aqueous solution using untreated and treated (Metroxylon spp.) waste adsorbent: equilibrium and kinetics studies. Jeminat O. Amode, Jose H. Santos, Zahangir Md. Alam, Aminul H. Mirza, Chan C. Mei (2016), International Journal of Industrial Chemistry, 7(3): 333-345 [DOI: 10.1007/s40090-016-0085-9].
(4) Metal accumulation in the tissues and shells of Indothais gradata snails inhabiting soft and hard substrata in an acidified tropical estuary (Brunei, South East Asia). Sorya Proum, Jose H. Santos, Lee Hoon Lim, David J. Marshall (2016), Regional Studies in Marine Science, 8: 487-497 [DOI:10.1016/j.rsma.2016.03.010]
(5) Biomimetic potentiometric sensor for chlorogenic acid based on electrosynthesized polypyrrole. Kisan Koirala, Fortunato B. Sevilla III, Jose H. Santos (2016), Sensors and Actuators B: Chemical, 222: 391-396.
(6) Determination of Chromium and Manganese in Steel Using Digital Photometry of Solutions. J Vedad, J Solivas, J Santos and E del Rosario (2015), Philippine Journal of Science, 144 (2): 117-127.
(7) Meat Species Identification using DNA-Redox Electrostatic Interactions and Non-specific Adsorption on Graphene Biochips. Sharmili Roy, Ibrahim Abd Rahman, Jose Hernandez Santos and Minhaz Uddin Ahmed (2015), Food Control, 61: 70-78.


TOP PUBLICATIONS

(1) Correlations between gastropod shell dissolution and water chemical properties in a tropical estuary. 2008. DJ Marshall, JH Santos, KMY Leung, WH Chak, Marine Environmental Research 66 (4), 422-429.
(2) Adsorption behavior of cytochrome c, myoglobin and hemoglobin in a quartz surface probed using slab optical waveguide (SOWG) spectroscopy. 2003. JH Santos, N Matsuda, Z Qi, T Yoshida, A Takatsu, Analytical sciences 19 (2), 199-204.
(3) Preparation of microelectrodes: comparison of polishing procedures by statistical analysis of voltammetric data. 1996. TJ Cardwell, J Mocak, JH Santos, AM Bond, Analyst 121 (3), 357-362.
(4) Spectroelectrochemical studies on surface immobilized cytochrome c on ITO electrode by slab optical waveguide spectroscopy. 2003. N Matsuda, JH Santos, A Takatsu, K Kato, Thin Solid Films 438, 403-406.
(5) Experimental evidence of the reversibility of the first stage of protein adsorption at a hydrophobic quartz surface near the isoelectric point. 2003. JH Santos, N Matsuda, Z Qi, T Yoshida, A Takatsu, K Kato, Surface and interface analysis 35 (5), 432-436.
(6) Prism-coupled multimode waveguide refractometer. 2002. ZM Qi, N Matsuda, JH Santos, A Takatsu, K Kato, Optics letters 27 (9), 689-691.


Scopus Publications

Total Publications: 31



1. Metal accumulation in the tissues and shells of Indothais gradata snails inhabiting soft and hard substrata in an acidified tropical estuary (Brunei, South East Asia), Regional Studies in Marine Science

2. Adsorption of methylene blue from aqueous solution using untreated and treated (Metroxylon spp.) waste adsorbent: equilibrium and kinetics studies, International Journal of Industrial Chemistry

3. Meat species identification using DNA-redox electrostatic interactions and non-specific adsorption on graphene biochips, Food Control

4. Biomimetic potentiometric sensor for chlorogenic acid based on electrosynthesized polypyrrole, Sensors and Actuators, B: Chemical

5. Chemically modified carbon paste electrode for the detection of lead, cadmium and zinc ions, Sensor Review

6. Determination of chromium and manganesein steel using digital photometry of solutions, Philippine Journal of Science

7. Preparation and evaluation of Acetabularia -modified carbon paste electrode in anodic stripping voltammetry of copper and lead ions, Journal of Chemistry

8. Synthesis, structural characterization and electrochemical studies of nickel(II), copper(II) and cobalt(III) complexes of some ONS donor ligands derived from thiosemicarbazide and S-alkyl/aryl dithiocarbazates, Transition Metal Chemistry

9. Cyclic voltammetric analysis of antioxidant activity in citrus fruits from Southeast Asia, International Food Research Journal

10. Cyclic voltammetric analysis of antioxidant activity in cane sugars and palm sugars from Southeast Asia, Food Chemistry

11. Simultaneous determination of mercury, lead and cadmium in aqueous samples using pectic acid-modified carbon paste electrode, Chemicke Listy

12. Correlations between gastropod shell dissolution and water chemical properties in a tropical estuary, Marine Environmental Research

13. Slab optical waveguide spectroscopy for in situ interfacial analysis, Proceedings of SPIE - The International Society for Optical Engineering

14. In situ observation of the initial adsorption process of heptylviologen cation radicals by slab optical waveguide spectroscopy synchronized with electrode potential modulation methods, Journal of Electroanalytical Chemistry

15. Time-resolved optical waveguide spectroscopy for studying protein adsorption kinetics, Materials Transactions

16. In situ monitoring of metal nanoparticle self-assembly on protein-functionalized glass by broadband optical waveguide spectroscopy, Journal of Colloid and Interface Science

17. In situ observation of absorption spectra and adsorbed species of methylene blue on indium-tin-oxide electrode by slab optical waveguide spectroscopy, Thin Solid Films

18. Spectroelectrochemical studies on surface immobilized cytochrome c on ITO electrode by slab optical waveguide spectroscopy, Thin Solid Films

19. Studies on adsorption behavior of hemoglobin onto hydrophobic surface by using slab optical waveguide spectroscopy, Electronics and Communications in Japan, Part II: Electronics (English translation of Denshi Tsushin Gakkai Ronbunshi)

20. Experimental evidence of the reversibility of the first stage of protein adsorption at a hydrophobic quartz surface near the isoelectric point, Surface and Interface Analysis

21. Study of initial adsorption process of hemoglobin to glass surface by using time-resolved slab optical waveguide(SOWG) spectroscopy, Chemistry Letters

22. Adsorption behavior of cytochrome c, myoglobin and hemoglobin in a quartz surface probed using slab optical waveguide (SOWG) spectroscopy, Analytical Sciences

23. A study of molecular adsorption of bromothymol blue by optical waveguide spectroscopy, Langmuir

24. Prism-coupled multimode waveguide refractometer, Optics Letters

25. Effect of surface hydrophilicity and solution chemistry on the adsorption behavior of cytochrome c in quartz studied using slab optical waveguide (SOWG) spectroscopy, IEICE Transactions on Electronics

26. Mercury-free anodic stripping voltammetry of lead ions using a PVS-doped polyaniline modified glassy carbon electrode, Analytical Communications

27. Effect of ion pairing on steady-state voltammetric limiting currents at microelectrodes part I. Theoretical principles, Journal of Electroanalytical Chemistry

28. Effect of ion pairing on steady state voltammetric limiting currents at microelectrodes part II. Experimental studies on charged (Br-, Ag+) and uncharged ( copper diethyldithiocarbamate) species in toluene, Journal of Electroanalytical Chemistry

29. Flow injection analysis of copper diethyldithiocarbamate in high resistance toluene media using a microelectrode detector, Analytica Chimica Acta

30. Preparation of microelectrodes: Comparison of polishing procedures by statistical analysis of voltammetric data, Analyst

31. Voltammetry of Copper Diethyldithiocarbamate in Toluene and Toluene-Based Solvents: Development of a Solvent Extraction-Stripping Method for the Determination of Copper Using Microdisk Electrodes, Analytical Chemistry