{"title":"Low-Grade Water as a Promising Candidate for Green Hydrogen Generation","authors":"Deepak Chauhan, Mahesh Itagi, Young-Ho Ahn","doi":"10.1002/adsu.202400336","DOIUrl":null,"url":null,"abstract":"<p>In this study, low-grade water as an alternative to pure water for generating green hydrogen is studied using non-precious hafnium nickel diselenide/reduced graphene oxide (HfNiSe<sub>2</sub>/rGO) electrocatalyst. The model electrocatalyst has performed well for hydrogen and oxygen generation. To attain 10 mA cm<sup>−2</sup> of current density, it requires only 1.56, 1.58, and 1.61 V for deionized water (DI), tertiary effluent (TE), and raw wastewater (RWW), respectively, with high durability. In addition to generating green energy, pollutants are successfully removed during electrolysis. The synthesized hafnium-based electrocatalyst is active toward urea electrolysis, requiring only 1.46 V for 10 mA cm<sup>−2</sup> with high stability. Replacing high-purity water with low-grade water opens a new opportunity window for establishing a sustainable hydrogen economy and water management strategies.</p>","PeriodicalId":7294,"journal":{"name":"Advanced Sustainable Systems","volume":"8 12","pages":""},"PeriodicalIF":6.5000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Sustainable Systems","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/adsu.202400336","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
In this study, low-grade water as an alternative to pure water for generating green hydrogen is studied using non-precious hafnium nickel diselenide/reduced graphene oxide (HfNiSe2/rGO) electrocatalyst. The model electrocatalyst has performed well for hydrogen and oxygen generation. To attain 10 mA cm−2 of current density, it requires only 1.56, 1.58, and 1.61 V for deionized water (DI), tertiary effluent (TE), and raw wastewater (RWW), respectively, with high durability. In addition to generating green energy, pollutants are successfully removed during electrolysis. The synthesized hafnium-based electrocatalyst is active toward urea electrolysis, requiring only 1.46 V for 10 mA cm−2 with high stability. Replacing high-purity water with low-grade water opens a new opportunity window for establishing a sustainable hydrogen economy and water management strategies.
本研究使用非贵金属二硒化铪/还原氧化石墨烯（HfNiSe2/rGO）电催化剂，研究了低品位水作为纯水的替代品来生成绿色氢气的问题。该模型电催化剂在制氢和制氧方面表现良好。在去离子水（DI）、三级出水（TE）和原废水（RWW）中，要达到 10 mA cm-2 的电流密度，分别只需要 1.56、1.58 和 1.61 V 的电压，且具有很高的耐用性。除了产生绿色能源外，污染物在电解过程中也被成功去除。合成的铪基电催化剂对尿素电解具有活性，10 mA cm-2 的电压仅需 1.46 V，且稳定性高。用低品位水替代高纯水为建立可持续的氢经济和水管理战略打开了一扇新的机遇之窗。
期刊介绍：
Advanced Sustainable Systems, a part of the esteemed Advanced portfolio, serves as an interdisciplinary sustainability science journal. It focuses on impactful research in the advancement of sustainable, efficient, and less wasteful systems and technologies. Aligned with the UN's Sustainable Development Goals, the journal bridges knowledge gaps between fundamental research, implementation, and policy-making. Covering diverse topics such as climate change, food sustainability, environmental science, renewable energy, water, urban development, and socio-economic challenges, it contributes to the understanding and promotion of sustainable systems.
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