{"id":1587,"date":"2014-07-04T08:41:52","date_gmt":"2014-07-04T08:41:52","guid":{"rendered":"http:\/\/opendna.com\/blog\/?p=1587"},"modified":"2022-12-23T11:07:17","modified_gmt":"2022-12-23T11:07:17","slug":"making-a-conductive-copper-ink-pigment","status":"publish","type":"post","link":"https:\/\/opendna.com\/blog\/2014\/07\/04\/making-a-conductive-copper-ink-pigment\/","title":{"rendered":"Making a conductive copper ink pigment"},"content":{"rendered":"<p>I got it into my head that I&#8217;d like to DIY a circuit-writing pen. This is Part 1 of the project, the first run at making a copper pigment. This is a process for precipitating copper nanoparticles.&nbsp;I know there are other methods, with longer-lasting materials,&nbsp;but they require more equipment and precision. I thought I&#8217;d start with easy and document the improvements.&nbsp;This is a really easy chemistry experiment suitable (IMO) for classrooms, <a title=\"Self-made Copper powder (fine precipitation)\" href=\"http:\/\/www.sciencemadness.org\/talk\/viewthread.php?tid=2654#pid29059\" target=\"_blank\" rel=\"noopener\">garage chemists<\/a> and hobbyists.<\/p>\n<p>Materials:<\/p>\n<ul>\n<li>copper sulfate II pentahydrate (CuSO<sub>4<\/sub>5H<sub>2<\/sub>O)<\/li>\n<li>ascorbic acid (C<sub>6<\/sub>H<sub>8<\/sub>O<sub>6<\/sub>)<\/li>\n<li>water<\/li>\n<\/ul>\n<p>Equipment<\/p>\n<ul>\n<li>beakers x2<\/li>\n<li>mixing spoon<\/li>\n<li>water kettle<\/li>\n<\/ul>\n<p><iframe loading=\"lazy\" src=\"\/\/www.youtube.com\/embed\/eI6vg6I7Z_g\" width=\"420\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<div style=\"display: none;\">CuSO<sub>4<\/sub>*5H<sub>2<\/sub>O + C<sub>6<\/sub>H<sub>8<\/sub>O<sub>6<\/sub> = Cu+ + H<sub>2<\/sub>SO<sub>4<\/sub> + C<sub>6<\/sub>H<sub>6<\/sub>O<sub>6<\/sub> + H<sub>2<\/sub>O copper sulfate + ascorbic acid = copper + sulfuric acid + dehydroascorbic acid + water<\/div>\n","protected":false},"excerpt":{"rendered":"<p>This is part 1 of a project to DIY a circuit-writing pen: making a copper pigment. I thought I&#8217;d start with easy methods and readily available materials. This is a simple chemistry experiment suitable for classrooms, garage chemists and hobbyists. The pigment produced conduct electricity pretty well.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"webmentions_disabled_pings":false,"webmentions_disabled":false,"activitypub_content_warning":"","activitypub_content_visibility":"","activitypub_max_image_attachments":3,"activitypub_interaction_policy_quote":"anyone","activitypub_status":"","footnotes":""},"categories":[190],"tags":[638,637,183,184,185,186,187,188,189],"class_list":["post-1587","post","type-post","status-publish","format-standard","hentry","category-builds","tag-638","tag-637","tag-art-supplies","tag-chemistry","tag-copper-ink","tag-diy","tag-electrochemisty","tag-electronics","tag-experiments"],"_links":{"self":[{"href":"https:\/\/opendna.com\/blog\/wp-json\/wp\/v2\/posts\/1587","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/opendna.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/opendna.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/opendna.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/opendna.com\/blog\/wp-json\/wp\/v2\/comments?post=1587"}],"version-history":[{"count":4,"href":"https:\/\/opendna.com\/blog\/wp-json\/wp\/v2\/posts\/1587\/revisions"}],"predecessor-version":[{"id":2159,"href":"https:\/\/opendna.com\/blog\/wp-json\/wp\/v2\/posts\/1587\/revisions\/2159"}],"wp:attachment":[{"href":"https:\/\/opendna.com\/blog\/wp-json\/wp\/v2\/media?parent=1587"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/opendna.com\/blog\/wp-json\/wp\/v2\/categories?post=1587"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/opendna.com\/blog\/wp-json\/wp\/v2\/tags?post=1587"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}