1. CB Njoku, RJ Kriek, “Sol-gel Synthesised Nanocomposite Ce0.8Sr0.2Co1-(x+y)NixFeyO3-δ (x = 0.1, 0.2 and y = 0.2, 0.5, 0.7) – A Perovskite Type Electrocatalyst for the Oxygen Evolution Reaction in Alkaline Media”, Electrocatalysis, Under Review  
2. OA Oyetade, RJ Kriek, “NiSe-Ni3Se2/carbon nanotubes as efficient electrocatalysts for the oxygen evolution reaction in alkaline medium”, Electrocatalysis, In Press
3. D Coertzen, RJ Kriek, PBJ Levecque, A Falch, “Vulcan carbon as support for sputtered oxygen evolution electrocatalysts”, Electrocatalysis, https://doi.org/10.1007/s12678-019-00549-y
4. RJ Kriek, L.A. van Heerden, A. Falch, MI Gillepsie, “On the electrocatalytic symbiotic synergism between Pt, Ni, and Al in plasma vapour deposited PtxNiyAlz thin metal films”, ACS Applied Energy Materials, Under Review
5. MZ Iqbal, RJ Kriek, “Photo-charging of Europium(III) Tellurium Oxide as Photo-electrocatalyst”, ACS Applied Energy Materials, 2019, 2, 4205 – 4214
6. A Falch, A Shnier, D Wamwangi, D Billing, RJ Kriek, and Z Geldenhuys, “The effect of sputtered Pt40Pd57Al3 thin film thickness on SO2(aq) electro-oxidation”, Electrocatalysis, 2019, 10, 399 – 405 
7. CJ le Roux, RJ Kriek, “A detailed spectrophotometric investigation of the stability constants of 
8. [PdCln(OH)4-n]2- and [PdBrn(OH)4-n]2- (n = 0 – 4)”, Hydrometallurgy, 2019, 186, 21 – 29 
9. CB Njoku, RJ Kriek, “Application of Sm0.8Sr0.2Fe1-xCoxO3-δ (x = 0.2, 0.5, 0.8) perovskite for the oxygen evolution reaction in alkaline media”, Electrocatalysis, 2019, 10, 305 – 313  
10. V Vishnyakov, PJ Kelly, J Humbolt, RJ Kriek, NS Allen, N Mahdjoub, “Use of ion-assisted sputtering technique for producing photocatalytic titanium dioxide thin films: Influence of thermal treatments on structural and activity properties based on the decomposition of stearic acid”, Journal of Polymer Degradation and Stability, 2018, 157, 1 – 8 
11. MI Gillespie, RJ Kriek, “Scalable hydrogen production from a mono-circular filter press Divergent Electrode-Flow-Through alkaline electrolysis stack”, Journal of Power Sources, 2018, 397, 204 – 213 
12. MZ Iqbal, RJ Kriek, “Silver/nickel oxide (Ag/NiO) nanocomposites produced via a citrate sol-gel route as electrocatalyst for the oxygen evolution reaction (OER) in alkaline medium”, Electrocatalysis, 2018, 9, 279 – 286 
13. AC Fortuin, C Jackson, E Carleschi, BP Doyle, A Shnier, RJ Kriek, SC Ray, DG Billing, D Wamwangi, GG Scherer, PBJ Levecque, “Towards practical applications of EQCN experiments to study Pt anchor sites on carbon surfaces”, Electrocatalysis, 2018, 9, 271 – 278
14. NS Allen, N Mahdjoub, V Vishnyakov, PJ Kelly, RJ Kriek, “The effect of crystalline phase (anatase, brookite and rutile) and size on the photocatalytic activity of calcined polymorphic titanium dioxide (TiO2)”, Journal of Polymer Degradation and Stability, 2018, 150, 31 – 36
15. MI Gillespie, RJ Kriek, “Hydrogen production from a rectangular horizontal filter press Divergent Electrode-Flow-Through (DEFTTM) alkaline electrolysis stack”, Journal of Power Sources, 2017, 372, 252 – 259
16. CJ le Roux, RJ Kriek, “A detailed spectrophotometric investigation of the complexation of palladium(II) with chloride and bromide”, Hydrometallurgy, 2017, 169, 447 - 455
17. A Falch, VA Badets, C Labrugère, RJ Kriek, “Co-sputtered PtxPdyAlz thin film electrocatalysts for the production of hydrogen via SO2(aq) electro-oxidation”, Electrocatalysis, 2016 7(5), 376
18. - 390
19. M Potgieter, J Parrondo, VK Ramani, RJ Kriek, “Evaluation of polycrystalline platinum and rhodium surfaces for the electro-oxidation of aqueous sulphur dioxide”, Electrocatalysis, 2016, 7, 50 – 59
20. A Falch, VA Lates, HS Kotzé, RJ Kriek, “The effect of rapid thermal annealing on sputtered Pt and Pt3Pd2 thin film electrocatalysts for SO2(aq) electro-oxidation”, Electrocatalysis, 2016, 7, 33 – 41
21. MI Gillespie, F van der Merwe, RJ Kriek, “Performance evaluation of a membraneless divergent electrode-flow-through (DEFT) alkaline electrolyser based on optimisation of electrolytic flow and electrode gap”, Journal of Power Sources, 2015, 293, 228 – 235
22. A Falch, V Lates, RJ Kriek, “Combinatorial plasma sputtering of PtxPdy thin film electrocatalysts for aqueous SO2 electro-oxidation Electrocatalysis”, Electrocatalysis, 2015, 6(3), 322 - 330
23. V Lates, A Falch, RJ Kriek, “Combinatorial synthesis of gold-based thin films for  improved electrocatalytic conversion of CO2 to CO”, Electrocatalysis, 2015, 6(3), 308 - 314
24. F Mahlamvana and RJ Kriek, “Photocatalytic reduction of [RhCln(H2O)6-n]3-n (n = 0 – 6) in a titanium dioxide suspension: The role of structurally different sacrificial reducing agents”, Applied Catalysis B: Environmental, 2015, 162, 2015, 445 – 453
25. CJ le Roux, P Gans, RJ Kriek, “Complexation of palladium(II) with thiocyanate – a spectrophotometric investigation”, Journal of Coordination Chemistry, 2014, 67 (9), 1520 - 1529
26. RJ Kriek, J Rossmeisl,  S Siahrostami and ME Björketun, “H2 production through electro-oxidation of SO2: identifying the fundamental limitations”, Physical Chemistry Chemical Physics, 2014, 16 (20), 9572 - 9579
27. V Lates, A Falch, A Jordaan, R Peach and RJ Kriek, “An electrochemical study of carbon dioxide electroreduction at gold-based nanoparticle catalysts”, Electrochimica Acta, 2014, 128, 75 - 84 
28. F Mahlamvana and RJ Kriek, “Photocatalytic reduction of platinum(II and IV) from their chloro complexes in a titanium dioxide suspension in the absence of an organic sacrificial reducing agent”, Applied Catalysis B: Environmental, 148-149, 2014, 387-393
29. DC Onwudiwe, T Arfin, CA Strydom and RJ Kriek, “Synthesis, spectroscopic characterization and behaviour of AC impedance spectroscopy of Cd(II)bis(N-paramethyl dithiocarbamate)”, Electrochimica Acta, Volume 109, 2013, 809-817
30. RJ Kriek, J van Ravenswaay, M Bjorketun, S Siahrostami, M Potgieter, A Calitz, V Lates, J Rossmeisl, “SO2 - an indirect source of energy”, Journal of the Southern African Institute of Mining and Metallurgy, 113, 2013, 593-604
31. A Falch and RJ Kriek, “Laser induced H2 production employing Pt-TiO2 photocatalysts”, Journal of Photochemistry and Photobiology A: Chemistry, 271, 2013, 117-123
32. F Mahlamvana and RJ Kriek, “The impeding effect of dissolved oxygen on the photocatalytic reduction of [PdCln(H2O)4-n]2-n (n = 0 - 4) complexes employing different TiO2 catalysts in the absence of an added sacrificial reducing agent”, Applied Catalysis B: Environmental, 142-143, 2013, 809-816
33. DC Onwudiwe, T Arfin, CA Strydom and RJ Kriek, “Synthesis, spectroscopic characterization and behaviour of AC impedance spectroscopy of Cd(II)bis(N-paramethyl dithiocarbamate)”, Electrochimica Acta, Volume 104, 2013, 19-25
34. Tanvir Arfin, Rani Bushra and Roelof J. Kriek, “Ionic Conductivity of Alkali Halides across a Polyaniline-Zirconium(IV)-Arsenate Membrane”, Analytical and Bioanalytical Electrochemistry, Vol. 5, No. 2, 2013, 206-221
35. A Falch, VA Lates, and RJ Kriek, “The electrochemical oxidation of aqueous SO2 on sputtered Pt/glassy carbon electrodes”, Precious Metals 2013 Conference, The Precious Metals Development Network, Cape Town, South Africa, 14-16 October 2013, ISBN 9781920410513
36. T Arfin, A Falch and RJ Kriek, “Synthesis and characterisation of nano-composite nylon-6,6 nickel phosphate membranes: Evaluation of charge density and the theory for calculating membrane potential”, Physical Chemistry and Chemical Physics, 2012, 14 (48), 16760 - 16769
37.  RJ Kriek and F Mahlamvana, “Dependency on chloride concentration and ‘in-sphere’ oxidation of H2O for the effective TiO2-photocatalysed electron transfer from H2O to [PdCln(H2O)4-n]2-n (n = 0 – 4) in the absence of an added sacrificial reducing agent”, Applied Catalysis A: General, 423 - 424, 2012, 28 - 33
38. T Arfin, F Jabeen, and RJ Kriek, “An electrochemical and theoretical comparison of ionic transport through a polystyrene based titanium-vanadium (1:2) phosphate membrane”, Desalination, 274, 2011, 206 – 211
39. JP van Ravenswaay, F v Niekerk, RJ Kriek, E Blom, HM Krieg, F van der Merwe & HCM Vosloo, “South Africa’s nuclear hydrogen production development programme”, Nuclear Energy, Nuclear Science, Nuclear Production of Hydrogen, OECD-NEA Fourth Information Exchange Meeting, Oakbrook, Illinois, USA, 14-16 April 2009, ISBN 9789264087156
40. JJ Cruywagen and RJ Kriek, “Complexation of palladium(II) with chloride and hydroxide”, Journal of Coordination Chemistry, 60, Issue 4, 2007, 439 – 447
41. VA Patterson, HM Krieg, RJ Kriek, and H Bisset, “Direct synthesis of a titania membrane on a centrifugally casted tubular ceramic support”, Journal of Membrane Science, 285, 2006, 1 – 3
42. RJ Kriek, WJ Engelbrecht, and JJ Cruywagen, “Separation and Recovery of Some Platinum Group Metals (PGM’s) by means of Selective Photocatalytic Reduction”, Journal of the South African Institute of Mining and Metallurgy, 95, No. 2, March/April 1995