Diffused sunlight driven highly synergistic pathway for complete mineralization of organic contaminants using reduced graphene oxide supported photocatalyst.

Ganesh Babu, Sundaram; Vinoth, Ramalingam; Neppolian, Bernaurdshaw; Dionysiou, Dionysios D.; Ashokkumar, Muthupandian

doi:10.1016/j.jhazmat.2015.02.071

Single-atom nanozymes for electrochemical sensing oxidative stress biomarkers. (2025)
Journal Article
MANI, V., TOSTADO-BLAZQUEZ, G., RAMALINGAM, V. and SALAMA, K.N. 2025. Single-atom nanozymes for electrochemical sensing oxidative stress biomarkers. Trends in chemistry [online], In Press. Available from: https://doi.org/10.1016/j.trechm.2025.04.008

Developing reliable and low-cost sensors for oxidative stress biomarkers has gained significant interest for understanding and managing chronic diseases. Recently, single-atom nanozymes (SANs) with atomically dispersed metal sites and unique metal–ni... Read More about Single-atom nanozymes for electrochemical sensing oxidative stress biomarkers..

Air plasma sprayed multi-material composite coatings for enhanced light absorption and thermal emission. (2025)
Journal Article
FAISAL, N.H., RAJENDRAN, V., KANIAPAN, S., RAMALINGAM, V., PRATHURU, A., AHMED, R., KATIYAR, N.K., BANSAL, A., WHITTAKER, T., ISHERWOOD, P., WHITTOW, W., EGIZA, M. and GOEL, S. 2025. Air plasma sprayed multi-material composite coatings for enhanced light absorption and thermal emission. Surface and coatings technology [online], 498, article number 131854. Available from: https://doi.org/10.1016/j.surfcoat.2025.131854

This study pioneers a transformative approach to solar thermal technology by leveraging air plasma-sprayed (APS) multi-material composite coatings. It is to achieve unprecedented light absorption and thermal emission, redefining the design paradigm f... Read More about Air plasma sprayed multi-material composite coatings for enhanced light absorption and thermal emission..

Unassisted photoelectrochemical CO2 reduction by employing III–V photoelectrode with 15% solar‐to‐fuel efficiency. (2025)
Journal Article
PERAMAIAH, K., VARADHAN, P., RAMALINGAM, V., KHAN, B., DAS, P.K., HUANG, H., FU, H.-C., YANG, X., TUNG, V., HUANG, K.-W. and HE, J.-H. 2025. Unassisted photoelectrochemical CO2 reduction by employing III–V photoelectrode with 15% solar-to-fuel efficiency. Carbon energy [online], 7(3), article number e669. Available from: https://doi.org/10.1002/cey2.669

Solar-driven carbon dioxide reduction reaction (CO2RR) provides an opportunity to produce value-added chemical feedstocks and fuels. However, achieving efficient and stable photoelectrochemical (PEC) CO2RR into selective products is challenging owing... Read More about Unassisted photoelectrochemical CO2 reduction by employing III–V photoelectrode with 15% solar‐to‐fuel efficiency..

Egg shell mediated Ni5P4/polypyrrole electrocatalyst for sustainable water splitting. (2024)
Journal Article
G., N.B., LAZULI, A.R.S.C., RAMALINGAM, V., ESACKRAJ, K., SIVASANKARAN, R.P., CHOI, W. and NEPPOLIAN, B. 2025. Egg shell mediated Ni5P4/polypyrrole electrocatalyst for sustainable water splitting. Energy and fuels [online], 39(1), pages 750-763. Available from: https://doi.org/10.1021/acs.energyfuels.4c03688

A systematically crafted synthesis methodology of hydrothermal reaction followed by oxidative polymerization was implemented to fabricate nickel phosphide (Ni5P4) particles intricately deposited onto eggshell powder (ES). This process strived to prev... Read More about Egg shell mediated Ni5P4/polypyrrole electrocatalyst for sustainable water splitting..

Interfacial engineering of MoxSy via Boron‐doping for electrochemical N2‐to‐NH3 conversion. (2024)
Journal Article
ALSABBAN, M.M., PERAMAIAH, K., GENOVESE, A., AHMAD, R., AZOFRA, L.M., RAMALINGAM, V., HEDHILI, M.N., WEHBE, N., CAVALLO, L. and HUANG, K.-W. 2024. Interfacial engineering of MoxSy via Boron-doping for electrochemical N2-to-NH3 conversion. Advanced materials [online], 36(51): 15th Anniversary of King Abdullah University of Science and Technology (KAUST), article number 2405578. Available from: https://doi.org/10.1002/adma.202405578

The electrocatalytic synthesis of ammonia (NH3) through the nitrogen reduction reaction (NRR) under ambient temperature and pressure is emerging as an alternative approach to the conventional Haber–Bosch process. However, it remains a significant cha... Read More about Interfacial engineering of MoxSy via Boron‐doping for electrochemical N2‐to‐NH3 conversion..

Surface area‐enhanced cerium and sulfur‐modified hierarchical bismuth oxide nanosheets for electrochemical carbon dioxide reduction to formate. (2024)
Journal Article
PALANIMUTHU, N., SUBRAMANIAM, M.R., P, M.A., SHARMA, P.K., RAMALINGAM, V., PERAMAIAH, K., RAMAKRISHNAN, S., GU, G.H., YU, E.H. and YOO, D.J. 2024. Surface area-enhanced cerium and sulfur-modified hierarchical bismuth oxide nanosheets for electrochemical carbon dioxide reduction to formate. Small [online], 20(40), article number 2400913. Available from: https://doi.org/10.1002/smll.202400913

Electrochemical carbon dioxide reduction reaction (ECO2RR) is a promising approach to synthesize fuels and value-added chemical feedstocks while reducing atmospheric CO2 levels. Here, high surface area cerium and sulfur-doped hierarchical bismuth oxi... Read More about Surface area‐enhanced cerium and sulfur‐modified hierarchical bismuth oxide nanosheets for electrochemical carbon dioxide reduction to formate..

Promoting nitrogen photofixation for the synthesis of ammonia using oxygen-vacant Fe2O3/ZrO2 visible light photocatalyst with straddling heterojunction and enhanced charge transfer. (2024)
Journal Article
LAZULI, A.R.S.C., RAMALINGAM, V. and NEPPOLIAN, B. 2024. Promoting nitrogen photofixation for the synthesis of ammonia using oxygen-vacant Fe2O3/ZrO2 visible light photocatalyst with straddling heterojunction and enhanced charge transfer. Journal of cleaner production [online], 451, article number 142095. Available from: https://doi.org/10.1016/j.jclepro.2024.142095

Photocatalytic nitrogen (N2) fixation is a promising and environmentally friendly alternative approach to the energy-intensive Haber-Bosch process to produce green ammonia (NH3) with zero carbon emissions. However, the unique setbacks rest on develop... Read More about Promoting nitrogen photofixation for the synthesis of ammonia using oxygen-vacant Fe2O3/ZrO2 visible light photocatalyst with straddling heterojunction and enhanced charge transfer..

Unusual activity of rationally designed cobalt phosphide/oxide heterostructure composite for hydrogen production in alkaline medium. (2022)
Journal Article
ALSABBAN, M.M., ESWARAN, M.K., PERAMAIAH, K., WAHYUDI, W., YANG, X., RAMALINGAM, V., HEDHILI, M.N., MIAO, X., SCHWINGENSCHLÖGL, U., LI, L.-J., TUNG, V. and HUANG, K.-W. 2022. Unusual activity of rationally designed cobalt phosphide/oxide heterostructure composite for hydrogen production in alkaline medium. ACS nano [online], 16(3), pages 3906-3916. Available from: https://doi.org/10.1021/acsnano.1c09254

Design and development of an efficient, nonprecious catalyst with structural features and functionality necessary for driving the hydrogen evolution reaction (HER) in an alkaline medium remain a formidable challenge. At the root of the functional lim... Read More about Unusual activity of rationally designed cobalt phosphide/oxide heterostructure composite for hydrogen production in alkaline medium..

Solar cell with MXene electrode. (2020)
Patent
HE, J.-H., FU, H.-C., RAMALINGAM, V. and LIN, C.-H. 2020. Solar cell with MXene electrode. International patent application PCT/IB2020/051343. International publication number WO/2020/170131, published 27.08.2020. Available from: https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2020170131

A solar cell (100) includes a p-type silicon layer (105) having a first side and a second side and an n-type silicon layer (110) having a first side and a second side. The first side of the n-type silicon layer is arranged on the second side of the p... Read More about Solar cell with MXene electrode..

Single atom catalyst having a two dimensional support material. (2020)
Patent
HE, J.-H., RAMALINGAM, V., VARADHAN, P. and FU, H.-C. 2020. Single atom catalyst having a two dimensional support material. International patent application PCT/IB2020/051345. International publication number WO/2020/170132, published 27.08.2020. Available from: https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2020170132

A method for forming a single atom catalyst on a two-dimensional support material involves providing the two-dimensional support material. The two-dimensional support material is combined with at least two heteroatoms and a metal to form a solution.... Read More about Single atom catalyst having a two dimensional support material..

Heteroatom-mediated interactions between ruthenium single atoms and an MXene support for efficient hydrogen evolution. (2019)
Journal Article
RAMALINGAM, V., VARADHAN, P., FU, H.-C., KIM, H., ZHANG, D., CHEN, S., SONG, L., MA, D., WANG, Y., ALSHAREEF, H.N. and HE, J.-H. 2019. Heteroatom-mediated interactions between ruthenium single atoms and an MXene support for efficient hydrogen evolution. Advanced materials [online], 31(48), article number 1903841. Available from: https://doi.org/10.1002/adma.201903841

A titanium carbide (Ti3C2Tx) MXene is employed as an efficient solid support to host a nitrogen (N) and sulfur (S) coordinated ruthenium single atom (RuSA) catalyst, which displays superior activity toward the hydrogen evolution reaction (HER). X-ray... Read More about Heteroatom-mediated interactions between ruthenium single atoms and an MXene support for efficient hydrogen evolution..

Enhanced photoelectrochemical hydrogen production efficiency of MoS2-Si heterojunction. (2019)
Journal Article
ALARAWI, A., RAMALINGAM, V., FU, H.-C., VARADHAN, P., YANG, R. and HE, J.-H. 2019. Enhanced photoelectrochemical hydrogen production efficiency of MoS2-Si heterojunction. Optics express [online], 27(8), pages A352-A363. Available from: https://doi.org/10.1364/OE.27.00A352

Photoelectrochemical water splitting is one of the viable approaches to produce clean hydrogen energy from water. Herein, we report MoS 2 /Si-heterojunction (HJ) photocathode for PEC H 2 production. The MoS 2 /Si-HJ photocathode exhibits exceptional... Read More about Enhanced photoelectrochemical hydrogen production efficiency of MoS2-Si heterojunction..

π–π interaction between metal–organic framework and reduced graphene oxide for visible-light photocatalytic H2 production. (2018)
Journal Article
KARTHIK, P., VINOTH, R., ZHANG, P., CHOI, W., BALARAMAN, E. and NEPPOLIAN, B. 2018. π–π interaction between metal–organic framework and reduced graphene oxide for visible-light photocatalytic H2 production. ACS applied energy materials [online], 1(5), pages 1913-1923. Available from: https://doi.org/10.1021/acsaem.7b00245

Solar water splitting provides a promising path for sustainable hydrogen production and solar energy storage. In recent times, metal-organic frameworks (MOFs) have received considerable attention as promising materials for diverse solar energy conver... Read More about π–π interaction between metal–organic framework and reduced graphene oxide for visible-light photocatalytic H2 production..

Ruthenium based metallopolymer grafted reduced graphene oxide as a new hybrid solar light harvester in polymer solar cells. (2017)
Journal Article
VINOTH, R., GANESH BABU, S., BHARTI, V., GUPTA, V., NAVANEETHAN, M., VENKATAPRASAD BHAT, S., MUTHAMIZHCHELVAN, C., RAMAMURTHY, P.C., SHARMA, C., ASWAL, D.K., HAYAKAWA, Y. and NEPPOLIAN, B. 2017. Ruthenium based metallopolymer grafted reduced graphene oxide as a new hybrid solar light harvester in polymer solar cells. Scientific reports [online], 7, article number 43133. Available from: https://doi.org/10.1038/srep43133

A new class of pyridyl benzimdazole-based Ru complex decorated polyaniline assembly (PANI-Ru) was covalently grafted onto reduced graphene oxide sheets (rGO) via a covalent functionalization approach. The covalent attachment of PANI-Ru with rGO was c... Read More about Ruthenium based metallopolymer grafted reduced graphene oxide as a new hybrid solar light harvester in polymer solar cells..

Synergistically enhanced electrocatalytic performance of an N-doped graphene quantum dot-decorated 3D MoS2–graphene nanohybrid for oxygen reduction reaction. (2016)
Journal Article
VINOTH, R., PATIL, I.M., PANDIKUMAR, A., KAKADE, B.A., HUANG, N.M., DIONYSIOS, D.D. and NEPPOLIAN, B. 2016. Synergistically enhanced electrocatalytic performance of an N-doped graphene quantum dot-decorated 3D MoS2–graphene nanohybrid for oxygen reduction reaction. ACS omega [online], 1(5), pages 971-980. Available from: https://doi.org/10.1021/acsomega.6b00275

Nitrogen-doped graphene quantum dots (N-GQDs) were decorated on a three-dimensional (3D) MoS2–reduced graphene oxide (rGO) framework via a facile hydrothermal method. The distribution of N-GQDs on the 3D MoS2–rGO framework was confirmed using X-ray p... Read More about Synergistically enhanced electrocatalytic performance of an N-doped graphene quantum dot-decorated 3D MoS2–graphene nanohybrid for oxygen reduction reaction..

A visible-light active catechol–metal oxide carbonaceous polymeric material for enhanced photocatalytic activity. (2016)
Journal Article
KARTHIK, P., VINOTH, R., SELVAM, P., BALARAMAN, E., NAVANEETHAN, M., HAYAKAWA, Y. and NEPPOLIAN, B. 2017. A visible-light active catechol–metal oxide carbonaceous polymeric material for enhanced photocatalytic activity. Journal of materials chemistry A [online], 5(1), pages 384-396. Available from: https://doi.org/10.1039/C6TA07685H

Designing new materials for sustainable energy and environmental applications is one of the prime focuses in chemical science. Here, an unprecedented visible-light active catechol–TiO2 carbonaceous polymer based organic–inorganic hybrid material was... Read More about A visible-light active catechol–metal oxide carbonaceous polymeric material for enhanced photocatalytic activity..

Carrier separation and charge transport characteristics of reduced graphene oxide supported visible-light active photocatalysts. (2016)
Journal Article
VINOTH, R., KARTHIK, P., MUTHAMIZHCHELVAN, C., NEPPOLIAN, B. and ASHOKKUMAR, M. 2016. Carrier separation and charge transport characteristics of reduced graphene oxide supported visible-light active photocatalysts. Physical chemistry chemical physics [online], 18(7), pages 5179-5191. Available from: https://doi.org/10.1039/C5CP08041J

Extending the absorption to the visible region by tuning the optical band-gap of semiconductors and preventing charge carrier recombination are important parameters to achieve a higher efficiency in the field of photocatalysis. The inclusion of reduc... Read More about Carrier separation and charge transport characteristics of reduced graphene oxide supported visible-light active photocatalysts..

Reduced graphene oxide wrapped Cu2O supported on C3N4: an efficient visible light responsive semiconductor photocatalyst. (2015)
Journal Article
GANESH BABU, S., VINOTH, R., SURYA NARAYANA, P., BAHNEMANN, D. and NEPPOLIAN, B. 2015. Reduced graphene oxide wrapped Cu2O supported on C3N4: an efficient visible light responsive semiconductor photocatalyst. APL materials [online], 3(10), article number 104415. Available from: https://doi.org/10.1063/1.4928286

Herein, Cu2O spheres were prepared and encapsulated with reduced graphene oxide (rGO). The Cu2O–rGO–C3N4 composite covered the whole solar spectrum with significant absorption intensity. rGO-wrapped Cu2O loading caused a red shift in the absorption w... Read More about Reduced graphene oxide wrapped Cu2O supported on C3N4: an efficient visible light responsive semiconductor photocatalyst..

Influence of electron storing, transferring and shuttling assets of reduced graphene oxide at the interfacial copper doped TiO2 p–n heterojunction for increased hydrogen production. (2015)
Journal Article
GANESH BABU, S., VINOTH, R., KUMAR, D.P., SHANKAR, M.V., CHOU, H.-L., VINODGOPAL, K. and NEPPOLIAN, B. 2015. Influence of electron storing, transferring and shuttling assets of reduced graphene oxide at the interfacial copper doped TiO2 p–n heterojunction for increased hydrogen production. Nanoscale [online], 7(17), pages 7849-7857. Available from: https://doi.org/10.1039/C5NR00504C

Herein we report the simple, low-cost and scalable preparation of reduced graphene oxide (rGO) supported surfactant-free Cu2O–TiO2 nanocomposite photocatalysts by an ultrasound-assisted wet impregnation method. Unlike conventional preparation techniq... Read More about Influence of electron storing, transferring and shuttling assets of reduced graphene oxide at the interfacial copper doped TiO2 p–n heterojunction for increased hydrogen production..

Diffused sunlight driven highly synergistic pathway for complete mineralization of organic contaminants using reduced graphene oxide supported photocatalyst. (2015)
Journal Article
GANESH BABU, S., VINOTH, R., NEPPOLIAN, B., DIONYSIOU, D.D. and ASHOKKUMAR, M. 2015. Diffused sunlight driven highly synergistic pathway for complete mineralization of organic contaminants using reduced graphene oxide supported photocatalyst. Journal of hazardous materials [online], 291, pages 83-92. Available from: https://doi.org/10.1016/j.jhazmat.2015.02.071

Diffused sunlight is found to be an effective light source for the efficient degradation and mineralization of organic pollutant (methyl orange as a probe) by sono-photocatalytic degradation using reduced graphene oxide (rGO) supported CuO–TiO2 photo... Read More about Diffused sunlight driven highly synergistic pathway for complete mineralization of organic contaminants using reduced graphene oxide supported photocatalyst..

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